DIN 6797 Toothed Lock Washer (Shakeproof) — Complete Product Series

FULLERKREG DIN 6797 toothed lock washers (shakeproof washers) are manufactured to DIN 6797 standard in two tooth types and a full range of materials and surface treatments. DIN 6797 features a deeper, more aggressive tooth profile than DIN 6798, providing stronger mechanical anti-loosening engagement — widely specified in electrical, automotive, and high-vibration applications. Form A (external toothed) features teeth on the outer diameter for maximum anti-loosening torque. Form J (internal toothed) features teeth on the inner diameter, preserving the outer substrate surface. Select the form, material, and finish that matches your application below.

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Product Variants — Browse by Form, Material & Finish

DIN 6797A External Shakeproof — A2 Stainless Steel (SUS304), Whitened & Passivated
A2 stainless steel (SUS304) · Whitened & passivated · M3–M30 · External teeth · Non-magnetic · Maximum anti-loosening torque · General corrosion resistance

DIN 6797A External Toothed — 65Mn Spring Steel, Zinc CR3
65Mn spring steel (GB/T 1222) · Zinc CR3 electroplating · M3–M30 · External teeth · 430–510 HV · ≥72h NSS · RoHS compliant · Maximum anti-loosening torque

DIN 6797J Internal Shakeproof — A2 Stainless Steel (SUS304), Whitened & Passivated
A2 stainless steel (SUS304) · Whitened & passivated · M3–M30 · Internal teeth · Non-magnetic · Outer surface preserved · General corrosion resistance

DIN 6797J Internal Toothed — 65Mn Spring Steel, Zinc CR3
65Mn spring steel (GB/T 1222) · Zinc CR3 electroplating · M3–M30 · Internal teeth · 430–510 HV · ≥72h NSS · RoHS compliant · Outer surface preserved

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How to Choose the Right Type

Requirement	Recommended Choice
Maximum anti-loosening performance	Form A (External) — teeth at largest radius
Outer substrate surface must be preserved	Form J (Internal) — teeth bite into fastener
Corrosion-resistant, non-magnetic, food-safe	A2 Stainless Steel (SUS304)
High hardness, outdoor or humid environment	65Mn Steel, Zinc CR3
RoHS-compliant zinc finish required	65Mn Steel, Zinc CR3 (no Cr6+)
Electrical / automotive / high-vibration	DIN 6797 (deeper tooth profile vs. DIN 6798)

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DIN 6797 Form A vs. Form J

Feature	Form A (External Toothed)	Form J (Internal Toothed)
Tooth location	Outer diameter	Inner diameter
Bites into	Substrate surface (under bolt head / nut)	Fastener shank / bolt head underside
Outer surface	Marked by teeth	Preserved — no marking
Anti-loosening torque	Maximum — largest tooth radius	Standard
Best for	General industrial, maximum performance	Visible or finished surfaces

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DIN 6797 vs. DIN 6798 — Which to Choose?

Feature	DIN 6797 (Shakeproof)	DIN 6798 (Serrated)
Tooth profile	Deeper, more aggressive	Shallower, standard serration
Anti-loosening strength	Stronger — higher bite-in force	Standard
Surface marking	More pronounced	Standard
Typical use	Electrical, automotive, high-vibration	General industrial assemblies
Common name	Shakeproof washer	Serrated lock washer

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DIN 6797 Standard Overview

• Standard: DIN 6797
• Forms: Form A (External Toothed) · Form J (Internal Toothed)
• Size range: M3 – M30
• Tooth profile: Deeper and more aggressive than DIN 6798 — stronger anti-loosening engagement
• Common name: Shakeproof washer — widely specified in electrical and automotive standards
• All grades RoHS & REACH compliant

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Product Photo Gallery

FULLERKREG DIN 6797 Toothed 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 and hardness
• 🌍 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.
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