Spring Lock Washers

Spring Lock Washers, also referred to as helical spring washers or split washers, are one of the most commonly used washers in fastening assemblies. Their helical shape creates spring tension that helps prevent loosening due to vibration or torque, making them a reliable alternative to flat washers in many bolted joints.

These washers are available in both hardened and as-formed conditions, depending on the application’s strength and durability requirements. Adfast Component supplies spring lock washers in a variety of metric and imperial sizes, offering multiple material options to suit different industrial needs.

Spring Lock Washer Specifications

Forming Hot & Cold Forged
Metric Size M1.6 to M100
Imperial Size 0.06″ to 4″
Thickness Standard and Custom
Standards DIN, ASME, ISO & IS
Variants Available in multiple types as per design and application
Dimension Standards
DIN 127A DIN 127B DIN 128A
DIN 128B DIN 137 DIN 6905
DIN 6976 DIN 7980 DIN 43699
UNI 1751 CSN 21741 ASME B18.21.1
Materials
Carbon Steel Alloy Steel Stainless Steel
Duplex Steel Super Duplex Steel Nickel Alloys
Monel Inconel Hastelloy
Titanium Copper Alloys Aluminium Alloys
ASTM Specifications
ASTM A36 ASTM A313 ASTM A493
ASTM A580 ASTM A581 ASTM A805
ASTM A905 ASTM A679 ASTM A853
ASTM A1000 ASTM B1 ASTM B160
ASTM B272
Coatings
Zinc Plating Hot Dip Galvanizing PTFE Coating
Black Oxide Phosphate Coating Customized Coatings