DIN 137 Spring Washer — Complete Product Series

FULLERKREG DIN 137 spring washers are manufactured to DIN 137 standard in two profile types and a full range of materials and surface treatments. DIN 137 washers feature a larger outer diameter than DIN 128 for the same bolt size, providing greater spring travel and higher load capacity. Type A (curved) features a single dished arc for smooth, even load distribution. Type B (crinkled) features multiple corrugations for distributed multi-point contact. Both types provide axial spring force without sharp edges — ideal for soft materials, coated surfaces, and applications 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 137A Spring Washer (Curved) — A2 Stainless Steel (SUS304), Whitened & Passivated
A2 stainless steel (SUS304) · Whitened & passivated · M3–M36 · Curved profile · Non-magnetic · General corrosion resistance · Food-safe

DIN 137A Spring Washer (Curved) — 65Mn Spring Steel, Zinc CR3
65Mn spring steel (GB/T 1222) · Zinc CR3 electroplating · M3–M36 · Curved profile · 430–510 HV · ≥72h NSS · RoHS compliant · Post-plate baking (ISO 9587)

DIN 137B Spring Washer (Crinkled) — A2 Stainless Steel (SUS304), Whitened & Passivated
A2 stainless steel (SUS304) · Whitened & passivated · M3–M36 · Crinkled profile · Non-magnetic · General corrosion resistance · Food-safe

DIN 137B Spring Washer (Crinkled) — A4 Marine Stainless Steel (SUS316), Whitened & Passivated
A4 stainless steel (SUS316) · Whitened & passivated · M3–M36 · Crinkled profile · Mo 2–3% · Marine-grade · Superior chloride & seawater resistance

DIN 137B Spring Washer (Crinkled) — 65Mn Spring Steel, Zinc CR3
65Mn spring steel (GB/T 1222) · Zinc CR3 electroplating · M3–M36 · Crinkled profile · 430–510 HV · ≥72h NSS · RoHS compliant · Post-plate baking (ISO 9587)

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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	65Mn Steel, Zinc CR3
Smooth bearing surface, high load	DIN 137 Type A (Curved)
Multi-point contact, general assemblies	DIN 137 Type B (Crinkled)
Soft materials, coated surfaces, no marking	Either type — no sharp edges

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DIN 137 Type A vs. Type B

Feature	Type A (Curved)	Type B (Crinkled)
Profile	Single curved arc (dished)	Multiple corrugations (crinkled / wavy)
Contact	Continuous curved contact	Multi-point contact
Spring action	Axial spring via single curve	Distributed multi-wave spring force
Surface marking	None — smooth curved surface	None — no sharp edges
Size range	M3–M36	M3–M36

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DIN 137 vs. DIN 128 — Key Difference

Feature	DIN 137	DIN 128
Outer diameter	Larger OD for same bolt size	Smaller OD (designed for cheese/pan head screws)
Spring travel	Greater	Standard
Load capacity	Higher (larger bearing area)	Standard
Size range	M3–M36	M2–M36

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DIN 137 Standard Overview

• Standard: DIN 137
• Types: Type A (Curved) · Type B (Crinkled / Wavy)
• Size range: M3 – M36
• Key advantage vs. DIN 128: Larger OD — greater spring travel and higher load capacity for same bolt size
• 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 137 Spring 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.