Self Lock Washers

Spring Lock Washers, also known as helical spring washers or split washers, are among the most commonly used washers in fastening applications. Their split, helical design helps maintain tension and prevent loosening due to vibration or dynamic loads, making them more effective than standard flat washers in many bolted assemblies.

These washers are available in both hardened and as-formed conditions to suit different mechanical and structural requirements. Adfast Component manufactures and supplies spring lock washers in a variety of metric and imperial sizes, offering a broad selection of materials to meet diverse industry needs.

Specifications

FormingHot & Cold Forged
Metric SizeM3 to M100
Imperial Size5/16″ to 4″
ThicknessStandard and Custom
StandardsDIN, ASME, ISO & IS
Variants 
Dimension Standards
DIN 9021DIN 9021BISO 7093
ASME B18.21.1PN 82030UNI 6593
CSN 21726  
Materials 
ASTM Specifications
ASTM F436ASTM F844ASTM A36
ASTM A167ASTM A240ASTM A283
ASTM A387ASTM A516ASTM A572
ASTM A829ASTM A633ASTM A656
ASTM B127ASTM B162ASTM B171
ASTM B209ASTM B424ASTM B463
ASTM B551ASTM B749ASTM B755
Coatings