Custom Zinc Die Casting for OEM Hardware & Precision Parts

Custom zinc die casting is the economical choice for small, precise, high-volume metal parts - locks, handles, connectors, gears, and decorative hardware. Zinc's low melting point allows hot-chamber casting with cycle times often under 30 seconds, holding tolerances to ±0.05 mm with surfaces that plate beautifully.

KastMfg produces custom zinc die cast components from customer drawings, 3D models, and application requirements - from DFM review through tooling, sampling, production, machining, finishing, and export packaging.

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Good Fits for Custom Zinc Die Casting

Part Requirement	Why Zinc HPDC Fits
Small, complex geometry	Excellent fluidity fills thin walls down to 0.4-0.8 mm
High volume	Hot-chamber cycles under 30 s amortize tooling fast
Tight tolerances	±0.05 mm as-cast reduces or eliminates machining
Decorative finish	Best chrome plating response of any die casting metal
Threaded inserts / fine detail	Zinc casts net-shape threads, text, and logos

If your part is weight-sensitive or runs hot, aluminum die casting may be the better process - see the aluminum vs zinc comparison.

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Alloy Selection

Alloy	Character	Common Use
Zamak 3	The global default - best ductility and plating	General hardware, enclosures
Zamak 5	1% copper - stronger and harder	Lock parts, automotive hardware
Zamak 2	3% copper - highest strength and creep resistance	Load-bearing small parts
ZA-8	8% aluminum - stronger, still hot-chamber capable	Structural hardware
ZA-12 / ZA-27	Higher aluminum, cold-chamber	Bearings, wear parts

For the full family overview, see what is Zamak and the zinc die casting alloys guide.

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Typical Custom Zinc Parts We Produce

• Lock bodies, lock cylinders, and security hardware
• Furniture and cabinet fittings, handles, and connectors
• Zippers, buckles, and apparel hardware
• Automotive interior mechanisms and emblems
• Small gearbox and motor components
• Connectors, shielding frames, and electronic hardware

Plated, powder coated, or as-cast - see zinc die casting plating for finish options.

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From Drawing to Production

1. Review drawing and 3D model
2. DFM feedback - draft, wall thickness, gating, ejection
3. Quote tooling, samples, and production pricing (48 business hours)
4. Build and trial the mold in-house
5. Inspect first samples, correct if required
6. Release to production after buyer approval

Zinc tooling is cheaper and longer-lived than aluminum tooling - dies routinely run over a million shots. For budgeting, see die casting tooling cost and die casting cost.

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Custom zinc die casting inquiry: yaoqingpu1983@gmail.com | +86 138 1403 4409 | No.6, Rungu Road, Nanjing, China

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• zinc die casting
• custom die casting
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