DIN 128 Lock Washer Spring — Complete Product Series

FULLERKREG DIN 128 spring lock washers are manufactured to DIN 128 standard in two profile types and a full range of materials and surface treatments. DIN 128 Type A (curved) features a single curved arc for smooth, even load distribution — designed for cheese head and pan head screws. DIN 128 Type B (wavy) features multiple corrugations for distributed multi-point contact — suited for general bolted assemblies. Both types provide axial spring force without sharp edges, making them ideal for soft materials and coated surfaces where surface marking must be avoided. Select the type, material, and finish that matches your application below.

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Product Variants — Browse by Type, Material & Finish

DIN 128A Lock Washer Spring — A2 Stainless Steel (SUS304), Whitened & Passivated
A2 stainless steel (SUS304) · Whitened & passivated · M2–M36 · Curved profile · Non-magnetic · General corrosion resistance · Food-safe

DIN 128A Lock Washer Spring — A4 Marine Stainless Steel (SUS316), Whitened & Passivated
A4 stainless steel (SUS316) · Whitened & passivated · M2–M36 · Curved profile · Mo 2–3% · Marine-grade · Superior chloride & seawater resistance

DIN 128A Lock Washer Spring — 70# Spring Steel, Zinc Plated
70# spring steel (GB/T 699) · Mechanical zinc plating · M2–M36 · Curved profile · 40–50 HRC · High spring force · Outdoor corrosion protection

DIN 128A Lock Washer Spring — 70# Spring Steel, Black Oxide
70# spring steel (GB/T 699) · Black oxide · M2–M36 · Curved profile · 40–50 HRC · Matte black · No hydrogen embrittlement · Precision indoor use

DIN 128B Lock Washer Spring — A2 Stainless Steel (SUS304), Whitened & Passivated
A2 stainless steel (SUS304) · Whitened & passivated · M2–M36 · Wavy profile · Non-magnetic · General corrosion resistance · Food-safe

DIN 128B Lock Washer Spring — 70# Spring Steel, Zinc Plated
70# spring steel (GB/T 699) · Mechanical zinc plating · M2–M36 · Wavy profile · 40–50 HRC · High spring force · Outdoor corrosion protection

DIN 128B Lock Washer Spring — 70# Spring Steel, Black Oxide
70# spring steel (GB/T 699) · Black oxide · M2–M36 · Wavy profile · 40–50 HRC · Matte black · No hydrogen embrittlement · Heavy-duty indoor use

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How to Choose the Right Grade

Application Environment	Recommended Grade
Marine, offshore, seawater splash zone	A4 Stainless Steel (SUS316)
General outdoor, food processing, fresh water	A2 Stainless Steel (SUS304)
Heavy machinery, outdoor or humid environment	70# Steel, Zinc Plated
Heavy machinery, indoor or dry environment	70# Steel, Black Oxide
Precision assembly, minimal coating thickness	70# Steel, Black Oxide (1–3 um)
Cheese head / pan head screw assemblies	DIN 128 Type A (Curved)
General bolted assemblies, soft materials	DIN 128 Type B (Wavy)

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DIN 128 Type A vs. Type B

Feature	Type A (Curved)	Type B (Wavy)
Profile	Single curved arc	Multiple corrugations (wavy)
Contact	Continuous curved contact	Multi-point contact
Designed for	Cheese head & pan head screws	General bolted assemblies
Surface marking	None — smooth curved surface	None — no sharp edges
Size range	M2–M36	M2–M36

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DIN 128 Standard Overview

• Standard: DIN 128
• Types: Type A (Curved) · Type B (Wavy)
• Size range: M2 – M36
• Designed for use with: Cheese head screws (DIN 84), Pan head screws (DIN 7985)
• Key advantage vs. DIN 127: No sharp edges — no surface marking, suitable for soft materials and coated surfaces
• All grades RoHS & REACH compliant

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Product Photo Gallery

FULLERKREG DIN 128 Spring Lock Washers — product range overview:

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Why Choose FULLERKREG?

• 🏭 Direct manufacturer — factory in China, no middlemen
• 📐 Strict DIN dimensional control — 100% inspection on critical dimensions
• 🌍 Global export experience — serving distributors in Europe, North America, Southeast Asia
• 📦 Flexible MOQ — small trial orders and large bulk shipments both welcome
• 📋 Full documentation — material certs, hardness reports, RoHS declarations on request
• ⚡ Fast lead times — standard sizes in stock, ready to ship

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FULLERKREG Fasteners — Precision DIN Standard Fasteners, Direct from Manufacturer.
For wholesale inquiries, technical questions, or custom orders, please contact our sales team.