Dual Lock Washers

FULLERKREG Dual Lock Washers are wedge-locking washer pairs engineered to DIN 25201 principles — delivering permanent, vibration-proof fastening without adhesives or deformation. Available in multiple material grades and surface treatments to suit every environment, from heavy industrial to marine and corrosive applications. Each pair interlocks cam-face to cam-face: the cam angle exceeds the thread pitch angle, so the harder the joint tries to loosen, the tighter the grip.

Browse by Material & Surface

Dual Lock Washers >465HV Grade 27MnCrB5 Hardened Steel – GEOMET Surface Coating
材质：27MnCrB5 Alloy Steel  ·  表面：GEOMET Zinc-Flake Coating  ·  硬度：>465 HV  ·  盐雾耳考：≥720h  ·  RoHS/ELV 合规  ·  M5–M24

Dual Lock Washers SUS316 (A4) Stainless Steel
材质：SUS316 / A4 Stainless Steel (316L)  ·  表面：Pickled · Passivated · Hardened  ·  硬度：≥390 HV  ·  耐海水腐蚀  ·  M5–M24

Selection Guide

Key Features – All Grades

• ✅ DIN 25201 wedge-locking principle — cam angle > thread pitch angle
• ✅ Self-locking under vibration, shock, and thermal cycling
• ✅ Reusable — no adhesives, no deformation
• ✅ Compatible with standard bolts and nuts — no special tools
• ✅ Tolerances and mechanical specifications comparable to Nord-Lock®, Twin-Lock® and Heico-Lock® brand locking washers
• ✅ Available M5–M24, bulk and sample quantities

Product Gallery

FULLERKREG Dual Lock Washers – actual product photos

Why FULLERKREG?

📩 Request a quote: Contact FULLERKREG for bulk pricing, custom specifications, and lead time.