---
title: "Wrench Handle for Enclosure: Zinc Die Cast or Molded Plastic?"
description: "Stuck between die-cast zinc and glass-filled nylon wrench handles for outdoor enclosure doors? Know which load test, material grade, and supplier qualification step will settle the decision before tooling."
url: "https://www.hyneu.com/questions/wrench-handle-zinc-die-cast-vs-molded-plastic.html"
language: "en"
type: "Q&A"
category: "Plastic Components Q&A"
datePublished: "2026-10-29"
dateModified: "2026-10-29"
brand: "HYNEU"
manufacturer: "HYNEU"
answerCount: 7
---

# Wrench Handle for Enclosure: Zinc Die Cast or Molded Plastic?

## Question

 We're evaluating suppliers for a new wrench handle that will go on our outdoor electrical enclosure door. The handle turns a 90 degree latch/cam on a 10 mm square shaft and will be operated by field technicians wearing gloves. Previously we used a zinc alloy die-cast handle, but the unit cost and finishing rejections have become hard to defend. We now have a revised design: the grip is still about 120 mm long, with a hub boss that transfers rotation to the latch. One recommended supplier says we should use glass-filled nylon with an internal stainless steel insert; another says we should stay with die-cast zinc because a rigid metal part has better long-term field performance. We're not sure which route to take before spending on tooling. Our environmental conditions are salt air, direct sun, and temperatures from -20 C to 60 C. The handle does not have to carry heavy load, but technicians occasionally pull on it when a gasket is stuck, and sometimes they use a screwdriver through the handle for extra torque, even though we warn against it. Our current pass/fail criteria are no cracks under 20 Nm applied torque, resistance to salt spray, and a service life of about 10 years without visible UV damage. Quotes differ significantly: the plastic version has lower piece price and is lighter, but tooling is about 25% more due to insert molding; zinc die-casting is more expensive per piece but seems simpler. How should we compare these options and what should we verify before signing the tooling contract? 

## Answers
                            
### Answer 1 — Best Answer

The decisive question is not which handle has a lower unit price; it is which failure mode your design can tolerate. Zinc die casting gives high stiffness, stable dimensions, and predictable behavior under UV and temperature. But it is dense, and in salt air any scratch in the coating becomes a beginning point for corrosion. A glass-filled nylon handle with a stainless steel insert is lighter, can be molded in black without paint, and will not corrode from the outside. The risk on the plastic side is not immediate fracture; it is slow creep around the square shaft at 60°C, UV chalking, and gradual loosening of the insert after years of torque.

For your requirement, **20 Nm at -20°C and at +60°C must be the gate**. A 120 mm handle producing 20 Nm at the latch shaft is already a high operating force, and adding a screwdriver through the handle creates a much higher overload. If the load path goes through a molded nylon boss directly to the square shaft, the corners of the shaft will gradually deform the plastic under repeated torque. If the load path goes through a molded-in stainless steel insert with an internal square bushing, **the plastic option can pass only if the stainless steel insert carries the shaft connection**, not just acts as a stiffening ring around the hub.

The clearest way to compare the two proposals is to put together a validation protocol and ask both suppliers for samples produced under production conditions, not hand-loaded prototype samples. Require the following: apply 20 Nm in both directions at -20°C, ambient, and 60°C; after 500 hours salt spray; and after 1000 hours UV weathering, inspect for cracking, chalking, insert rotation, and measurable bore deformation. Also run a sustained torque test at 60°C to see how much creep occurs. If the plastic version cannot pass those tests, choose zinc. If it passes, the lower landed cost becomes a real number.

The fact that the plastic tool costs 25% more than the zinc die does not mean the total project is more expensive. Once functional samples pass, **compare the fully finished landed cost over five years**: piece price, insert material, transport weight, painting or powder coating, secondary machining, and quality losses. Zinc die casting almost always needs trimming, surface pre-treatment, and a protective coating; you pay for those at every batch. PA66 with 30% glass fiber and UV stabilization can be molded black and used without paint, and the stainless steel insert can be loaded automatically if the supplier has insert-molding experience. The tooling premium is often recovered within one production year if all functional tests pass.

On the material side, do not accept a generic "nylon" grade. Specify PA66 with 30% glass fiber, heat stabilization, and UV stabilization with carbon black. Ask for the supplier's material data sheet and check how much moisture conditioning was used when testing mechanical properties, because nylon becomes more ductile and less rigid with moisture. On the zinc side, specify the alloy grade and the coating requirement separately. A good casting with a bad coating will still fail in salt air. Also request a DFM review from each supplier covering gate placement, weld line location, and insert retention. Where is the gate? Does the weld line fall inside the torque transfer path? How is the insert held against rotation inside the boss? Those answers affect tooling approval more than the quoted unit price.

For supplier selection, separate qualification into two tiers. Tier one is functional sampling under your documented load and environment. Tier two is production-process qualification: first articles from multi-cavity or trial-run tooling, insert alignment records, and process control data. If insert placement is manual, confirm that the supplier has a fixture to prevent misalignment, because an off-center insert immediately creates uneven torque and premature loosening. A supplier that cannot give you a written test plan, process flow, and clear quotation assumptions on insert grade and coating should be treated as a risk, not a price discount. For an outdoor enclosure handle, the functional failure is more expensive than the tooling investment.

**status:** accepted
**Author:** Claire Ren
**Date:** 2026-10-29

### Answer 2

If you move to the plastic version, the resin grade matters more than the brand or the color. PA66 with 30% glass fiber is the practical minimum; a general-purpose PA6 will soften at 60°C and absorb moisture more readily. For salt air and direct sun, specify a black pigmented grade with carbon black and a heat stabilizer.

Zinc alloy also has different grades: for a handle with a small hub and repeated torque, Zamak 5 gives better hardness and dimensional stability than Zamak 3. Do not let a supplier quote "die-cast zinc" without identifying the alloy and the coating thickness.

The stainless steel insert also needs a material callout. A smooth 304 stainless steel cylinder will not be enough.

The insert should be passivated and mechanically locked into the plastic, usually with knurling or flat surfaces, so the hub does not spin around it under load. Ask the insert supplier for a pull-out or push-out force value.

Also check the moisture-conditioned state of the nylon: a freshly molded part will test differently from one equilibrated at 50% relative humidity. Your 10-year expectation should be based on the stabilized wet/heat-aged behavior, not on virgin material data.

**status:** suggested
**Author:** Evan Qian
**Date:** 2026-10-29

### Answer 3

Bench torque tests can mislead you if they are done against a plain shaft simulator. This handle must work on a real enclosure door with a gasket that hardens in cold weather and softens in heat.

Set up a validation using the actual door and latch, with a new gasket at -20°C, and measure the peak force needed to release the latch and the force needed to pull the handle toward the operator when the gasket sticks. The torque-to-turn value and the side pull behavior are two different requirements.

For the application itself, also evaluate gloved operation in wet conditions. A glossy handle may look acceptable, but matte texture and a grip shape without sharp edges are more important for field technicians.

Check how much handle deflection occurs under a 300 N pull at 60°C; a plastic handle with too much flexibility can touch the door surface, trap water, or create a pinch point. If a screwdriver through the handle is common in the field, consider whether the design should include a hex socket or a dedicated service point, because an undefined overload point will fail unpredictably.

**status:** suggested
**Author:** Irene Tang
**Date:** 2026-10-29

### Answer 4

Before comparing quotes, ask each supplier to return a DFM review with clear wall thickness and draft angle recommendations. A common problem in this type of handle is uneven wall thickness around the hub.

If the hub is too thick, you get sink marks on the visible grip; if it is too thin, the insert has no structural support. A target range of 2.5 to 3.0 mm for the grip wall is practical, with a gradual transition into the hub instead of a sudden thick section.

Gate position is another pre-tooling risk. If the gate feeds from the grip end, the melt travels around the insert and creates weld lines near the square bore, which is exactly where strength is needed. Better to gate near the hub and keep the critical bore area well packed.

The supplier should also state how the insert is retained in the mold: if it is loaded manually, there must be a locating pin and interlock so the insert cannot shift during clamping. Add anti-rotation flats or knurling on the insert; a smooth cylindrical insert is a design-for-manufacture warning even if the first sample torque test passes.

**status:** suggested
**Author:** Henry Cao
**Date:** 2026-10-29

### Answer 5

The qualification plan should be written into the quotation before tooling starts. Define critical dimensions as the insert bore square size, insert perpendicularity to the handle axis, and overall handle length. Incoming inspection should verify those dimensions with go/no-go gauges on a defined sampling frequency.

The more important test is torque-to-turn: use a calibrated torque wrench on a fixture that simulates the 10 mm square shaft, and check both directions. Mark the handle and insert to detect rotation inside the plastic after the test.

For environmental resistance, define a standard: salt spray to ISO 9227, UV exposure to ISO 4892-3, and cold impact at -20°C. Classify cracks, insert loosening, and square bore deformation as critical defects, and classify chalking or gloss change as minor defects.

If the first article passes but the pilot batch fails at a rate above the agreed acceptance limit, require a corrective action report and an SPC review before mass production. Avoid relying on a material test certificate alone; a supplier's raw material lot can pass while their process still produces weak weld lines.

**status:** suggested
**Author:** Wendy Gao
**Date:** 2026-10-29

### Answer 6

An insert-molded wrench handle is tooling-sensitive. The mold for PA66 with 30% glass fiber is abrasive, so the tool steel should be hardened and the core slides coated to maintain a valid production life.

The insert also needs a steel core pin to keep its position during injection; if the mold lacks that, the square bore will be inconsistent. Cooling line design around the hub matters too, because a hot region causes longer cycles and more warpage at the hole where the latch shaft passes.

If you stay with zinc die casting, the tooling is simpler structurally, but do not ignore the die coating, ejector pin marks, and trimming requirements. A zinc casting with a draft angle that is too small will show drag marks at the boss; a finish requirement can force secondary polishing.

When a supplier says "tooling is straightforward, " ask them how they will cast the square bore. If the square bore is machined as a separate operation, that cost should appear in the piece price. Compare not only mold costs but the productivity and scrap assumptions behind each process.

**status:** suggested
**Author:** Owen Jiang
**Date:** 2026-10-29

### Answer 7

Treat this as a project decision, not just a material decision. The plastic insert version has two more variables: insert procurement and insert placement.

Ask each supplier for a realistic project timeline with milestones: design review, mold trial, dimensional report, first article inspection, and pilot run. The zinc die-cast tool may have a shorter lead time, but the plastic version with a higher piece-volume requirement may still be the better five-year path if the supplier can control insert placement.

Before signing the tooling contract, define who owns the drawing revision and what happens if the latch shaft size or torque requirement changes after sample approval. Also require that the first article samples come from the production tool in a normal cycle, not from an adjusted trial run with extra packing time and hand finishing.

Plan for a pilot run of 300 to 500 pieces before mass production, using the same insert lot and molding parameters that will be used in volume. This gives you a reliable data set for cost, cycle time, and defect rate before you commit to a full production schedule.

**status:** suggested
**Author:** Aaron Fang
**Date:** 2026-10-29

## Related Resources

- [Plastic Components Q&A](https://www.hyneu.com/questions/plastic-components/)
- [Plastic Component Manufacturing](https://www.hyneu.com/capabilities/plastic-component-manufacturing/)
- [Plastic Components](https://www.hyneu.com/products/plastic-components/)
- [Plastic Components Buying Guides](https://www.hyneu.com/buying-guides/plastic-components/)
- [Plastic Component Manufacturing Guide](https://www.hyneu.com/guides/plastic-component-manufacturing/)
- [Custom Manufacturing](https://www.hyneu.com/custom-manufacturing/)
- [Industries](https://www.hyneu.com/industries/)
- [Product & Component Design](https://www.hyneu.com/knowledge/product-component-design/)

## Structured Data

```json
[
    {
      "@context": "https://schema.org",
      "@type": "QAPage",
      "mainEntity": {
        "@type": "Question",
        "name": "Wrench Handle for Enclosure: Zinc Die Cast or Molded Plastic?",
        "text": "We're evaluating suppliers for a new wrench handle that will go on our outdoor electrical enclosure door. The handle turns a 90 degree latch/cam on a 10 mm square shaft and will be operated by field technicians wearing gloves. Previously we used a zinc alloy die-cast handle, but the unit cost and finishing rejections have become hard to defend. We now have a revised design: the grip is still about 120 mm long, with a hub boss that transfers rotation to the latch. One recommended supplier says we should use glass-filled nylon with an internal stainless steel insert; another says we should stay with die-cast zinc because a rigid metal part has better long-term field performance. We're not sure which route to take before spending on tooling. Our environmental conditions are salt air, direct sun, and temperatures from -20 C to 60 C. The handle does not have to carry heavy load, but technicians occasionally pull on it when a gasket is stuck, and sometimes they use a screwdriver through the handle for extra torque, even though we warn against it. Our current pass/fail criteria are no cracks under 20 Nm applied torque, resistance to salt spray, and a service life of about 10 years without visible UV damage. Quotes differ significantly: the plastic version has lower piece price and is lighter, but tooling is about 25% more due to insert molding; zinc die-casting is more expensive per piece but seems simpler. How should we compare these options and what should we verify before signing the tooling contract?",
        "answerCount": 7,
        "upvoteCount": 6,
        "datePublished": "2026-10-29T07:06:50Z",
        "dateModified": "2026-10-29T07:27:07Z",
        "author": {
          "@type": "Person",
          "name": "Anonymous",
          "url": "https://www.hyneu.com/questions/wrench-handle-zinc-die-cast-vs-molded-plastic.html"
        }
                ,"acceptedAnswer": {
            "@type": "Answer",
            "text": "The decisive question is not which handle has a lower unit price; it is which failure mode your design can tolerate. Zinc die casting gives high stiffness, stable dimensions, and predictable behavior under UV and temperature. But it is dense, and in salt air any scratch in the coating becomes a beginning point for corrosion. A glass-filled nylon handle with a stainless steel insert is lighter, can be molded in black without paint, and will not corrode from the outside. The risk on the plastic side is not immediate fracture; it is slow creep around the square shaft at 60°C, UV chalking, and gradual loosening of the insert after years of torque. For your requirement, 20 Nm at -20°C and at +60°C must be the gate . A 120 mm handle producing 20 Nm at the latch shaft is already a high operating force, and adding a screwdriver through the handle creates a much higher overload. If the load path goes through a molded nylon boss directly to the square shaft, the corners of the shaft will gradually deform the plastic under repeated torque. If the load path goes through a molded-in stainless steel insert with an internal square bushing, the plastic option can pass only if the stainless steel insert carries the shaft connection , not just acts as a stiffening ring around the hub. The clearest way to compare the two proposals is to put together a validation protocol and ask both suppliers for samples produced under production conditions, not hand-loaded prototype samples. Require the following: apply 20 Nm in both directions at -20°C, ambient, and 60°C; after 500 hours salt spray; and after 1000 hours UV weathering, inspect for cracking, chalking, insert rotation, and measurable bore deformation. Also run a sustained torque test at 60°C to see how much creep occurs. If the plastic version cannot pass those tests, choose zinc. If it passes, the lower landed cost becomes a real number. The fact that the plastic tool costs 25% more than the zinc die does not mean the total project is more expensive. Once functional samples pass, compare the fully finished landed cost over five years : piece price, insert material, transport weight, painting or powder coating, secondary machining, and quality losses. Zinc die casting almost always needs trimming, surface pre-treatment, and a protective coating; you pay for those at every batch. PA66 with 30% glass fiber and UV stabilization can be molded black and used without paint, and the stainless steel insert can be loaded automatically if the supplier has insert-molding experience. The tooling premium is often recovered within one production year if all functional tests pass. On the material side, do not accept a generic "nylon" grade. Specify PA66 with 30% glass fiber, heat stabilization, and UV stabilization with carbon black. Ask for the supplier's material data sheet and check how much moisture conditioning was used when testing mechanical properties, because nylon becomes more ductile and less rigid with moisture. On the zinc side, specify the alloy grade and the coating requirement separately. A good casting with a bad coating will still fail in salt air. Also request a DFM review from each supplier covering gate placement, weld line location, and insert retention. Where is the gate? Does the weld line fall inside the torque transfer path? How is the insert held against rotation inside the boss? Those answers affect tooling approval more than the quoted unit price. For supplier selection, separate qualification into two tiers. Tier one is functional sampling under your documented load and environment. Tier two is production-process qualification: first articles from multi-cavity or trial-run tooling, insert alignment records, and process control data. If insert placement is manual, confirm that the supplier has a fixture to prevent misalignment, because an off-center insert immediately creates uneven torque and premature loosening. A supplier that cannot give you a written test plan, process flow, and clear quotation assumptions on insert grade and coating should be treated as a risk, not a price discount. For an outdoor enclosure handle, the functional failure is more expensive than the tooling investment.",
            "upvoteCount": 6,
            "url": "https://www.hyneu.com/questions/wrench-handle-zinc-die-cast-vs-molded-plastic.html#acceptedAnswer",
            "datePublished": "2026-10-29T09:17:07Z",
            "author": {"@type": "Person","name": "Claire Ren","url": "https://www.hyneu.com/team/claire-ren.html"}        }
                ,"suggestedAnswer": [
                  {
            "@type": "Answer",
            "text": "If you move to the plastic version, the resin grade matters more than the brand or the color. PA66 with 30% glass fiber is the practical minimum; a general-purpose PA6 will soften at 60°C and absorb moisture more readily. For salt air and direct sun, specify a black pigmented grade with carbon black and a heat stabilizer. Zinc alloy also has different grades: for a handle with a small hub and repeated torque, Zamak 5 gives better hardness and dimensional stability than Zamak 3. Do not let a supplier quote "die-cast zinc" without identifying the alloy and the coating thickness. The stainless steel insert also needs a material callout. A smooth 304 stainless steel cylinder will not be enough. The insert should be passivated and mechanically locked into the plastic, usually with knurling or flat surfaces, so the hub does not spin around it under load. Ask the insert supplier for a pull-out or push-out force value. Also check the moisture-conditioned state of the nylon: a freshly molded part will test differently from one equilibrated at 50% relative humidity. Your 10-year expectation should be based on the stabilized wet/heat-aged behavior, not on virgin material data.",
            "upvoteCount": 0,
            "url": "https://www.hyneu.com/questions/wrench-handle-zinc-die-cast-vs-molded-plastic.html#suggestedAnswer-2",
            "datePublished": "2026-10-29T08:39:12Z",
            "author": {"@type": "Person","name": "Evan Qian","url": "https://www.hyneu.com/team/evan-qian.html"}          }
          ,          {
            "@type": "Answer",
            "text": "Bench torque tests can mislead you if they are done against a plain shaft simulator. This handle must work on a real enclosure door with a gasket that hardens in cold weather and softens in heat. Set up a validation using the actual door and latch, with a new gasket at -20°C, and measure the peak force needed to release the latch and the force needed to pull the handle toward the operator when the gasket sticks. The torque-to-turn value and the side pull behavior are two different requirements. For the application itself, also evaluate gloved operation in wet conditions. A glossy handle may look acceptable, but matte texture and a grip shape without sharp edges are more important for field technicians. Check how much handle deflection occurs under a 300 N pull at 60°C; a plastic handle with too much flexibility can touch the door surface, trap water, or create a pinch point. If a screwdriver through the handle is common in the field, consider whether the design should include a hex socket or a dedicated service point, because an undefined overload point will fail unpredictably.",
            "upvoteCount": 0,
            "url": "https://www.hyneu.com/questions/wrench-handle-zinc-die-cast-vs-molded-plastic.html#suggestedAnswer-3",
            "datePublished": "2026-10-29T08:26:41Z",
            "author": {"@type": "Person","name": "Irene Tang","url": "https://www.hyneu.com/team/irene-tang.html"}          }
          ,          {
            "@type": "Answer",
            "text": "Before comparing quotes, ask each supplier to return a DFM review with clear wall thickness and draft angle recommendations. A common problem in this type of handle is uneven wall thickness around the hub. If the hub is too thick, you get sink marks on the visible grip; if it is too thin, the insert has no structural support. A target range of 2.5 to 3.0 mm for the grip wall is practical, with a gradual transition into the hub instead of a sudden thick section. Gate position is another pre-tooling risk. If the gate feeds from the grip end, the melt travels around the insert and creates weld lines near the square bore, which is exactly where strength is needed. Better to gate near the hub and keep the critical bore area well packed. The supplier should also state how the insert is retained in the mold: if it is loaded manually, there must be a locating pin and interlock so the insert cannot shift during clamping. Add anti-rotation flats or knurling on the insert; a smooth cylindrical insert is a design-for-manufacture warning even if the first sample torque test passes.",
            "upvoteCount": 0,
            "url": "https://www.hyneu.com/questions/wrench-handle-zinc-die-cast-vs-molded-plastic.html#suggestedAnswer-4",
            "datePublished": "2026-10-29T08:14:26Z",
            "author": {"@type": "Person","name": "Henry Cao","url": "https://www.hyneu.com/team/henry-cao.html"}          }
          ,          {
            "@type": "Answer",
            "text": "The qualification plan should be written into the quotation before tooling starts. Define critical dimensions as the insert bore square size, insert perpendicularity to the handle axis, and overall handle length. Incoming inspection should verify those dimensions with go/no-go gauges on a defined sampling frequency. The more important test is torque-to-turn: use a calibrated torque wrench on a fixture that simulates the 10 mm square shaft, and check both directions. Mark the handle and insert to detect rotation inside the plastic after the test. For environmental resistance, define a standard: salt spray to ISO 9227, UV exposure to ISO 4892-3, and cold impact at -20°C. Classify cracks, insert loosening, and square bore deformation as critical defects, and classify chalking or gloss change as minor defects. If the first article passes but the pilot batch fails at a rate above the agreed acceptance limit, require a corrective action report and an SPC review before mass production. Avoid relying on a material test certificate alone; a supplier's raw material lot can pass while their process still produces weak weld lines.",
            "upvoteCount": 0,
            "url": "https://www.hyneu.com/questions/wrench-handle-zinc-die-cast-vs-molded-plastic.html#suggestedAnswer-5",
            "datePublished": "2026-10-29T08:07:54Z",
            "author": {"@type": "Person","name": "Wendy Gao","url": "https://www.hyneu.com/team/wendy-gao.html"}          }
          ,          {
            "@type": "Answer",
            "text": "An insert-molded wrench handle is tooling-sensitive. The mold for PA66 with 30% glass fiber is abrasive, so the tool steel should be hardened and the core slides coated to maintain a valid production life. The insert also needs a steel core pin to keep its position during injection; if the mold lacks that, the square bore will be inconsistent. Cooling line design around the hub matters too, because a hot region causes longer cycles and more warpage at the hole where the latch shaft passes. If you stay with zinc die casting, the tooling is simpler structurally, but do not ignore the die coating, ejector pin marks, and trimming requirements. A zinc casting with a draft angle that is too small will show drag marks at the boss; a finish requirement can force secondary polishing. When a supplier says "tooling is straightforward, " ask them how they will cast the square bore. If the square bore is machined as a separate operation, that cost should appear in the piece price. Compare not only mold costs but the productivity and scrap assumptions behind each process.",
            "upvoteCount": 0,
            "url": "https://www.hyneu.com/questions/wrench-handle-zinc-die-cast-vs-molded-plastic.html#suggestedAnswer-6",
            "datePublished": "2026-10-29T08:01:40Z",
            "author": {"@type": "Person","name": "Owen Jiang","url": "https://www.hyneu.com/team/owen-jiang.html"}          }
          ,          {
            "@type": "Answer",
            "text": "Treat this as a project decision, not just a material decision. The plastic insert version has two more variables: insert procurement and insert placement. Ask each supplier for a realistic project timeline with milestones: design review, mold trial, dimensional report, first article inspection, and pilot run. The zinc die-cast tool may have a shorter lead time, but the plastic version with a higher piece-volume requirement may still be the better five-year path if the supplier can control insert placement. Before signing the tooling contract, define who owns the drawing revision and what happens if the latch shaft size or torque requirement changes after sample approval. Also require that the first article samples come from the production tool in a normal cycle, not from an adjusted trial run with extra packing time and hand finishing. Plan for a pilot run of 300 to 500 pieces before mass production, using the same insert lot and molding parameters that will be used in volume. This gives you a reliable data set for cost, cycle time, and defect rate before you commit to a full production schedule.",
            "upvoteCount": 0,
            "url": "https://www.hyneu.com/questions/wrench-handle-zinc-die-cast-vs-molded-plastic.html#suggestedAnswer-7",
            "datePublished": "2026-10-29T07:27:07Z",
            "author": {"@type": "Person","name": "Aaron Fang","url": "https://www.hyneu.com/team/aaron-fang.html"}          }
                  ]
              }
    },
    {
      "@context": "https://schema.org",
      "@type": "BreadcrumbList",
      "itemListElement": [
          {"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.hyneu.com/"},{"@type": "ListItem", "position": 2, "name": "Q&A", "item": "https://www.hyneu.com/questions/"},{"@type": "ListItem", "position": 3, "name": "Plastic Components Q&A", "item": "https://www.hyneu.com/questions/plastic-components/"}          ,{"@type": "ListItem", "position": 4, "name": "Wrench Handle for Enclosure: Zinc Die Cast or Molded Plastic?"}
      ]
    }
]
```