Spring Lock Washers

Spring Lock Washers

Category : Washers

Spring Lock Washer (also known as helical spring washer or helical lock washer) are second most widely used washer type for fastening systems. This type of washer is also called as split washer referring to the shape. These spring washers are believed to be superior to flat / plain washer and proves efficientin the bolting joint.

Depending upon the bolting application, these lock washers can be supplied in hardened condition or as formed condition.BoltPort offers spring lock washers in both metric and imperial sizes with wide choice of material.


Sizes and Threads

Forming : Hot & Cold Punched
Size : M1.6 to M100 in Metric, 0.06" to 4" in Imperial
Thickness : Standard and Custom
Standards : DIN, ASME, ISO & IS.

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

Manufacturing Grades (Other)

High Tensile Grade 8.8, 10.9, 12.9, Stainless Steel, 304, 316, 316ti, 321, 904L, Duplex 2205, S31803, Super Duplex, 2507, S32750, F55, S32760, Zeron 100, Inconel 600, 601, 625, 718, 925, Incoloy 800, 800, 800ht, 825, Hastelloy B2, B3, C22, C276, C2000, X, Monel 400, R405, K500, Titanium Grade 2, 5, 7, 9, 12, 23, Copper Nickel, Silicon Bronze, Aluminum & Phosphor Bronze, Tantalum, etc.

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.

Compatibility (Other)

Product / Thread System Heavy Hex Bolts Heavy Hex Nuts Hardened Heavy Washers
Imperial ASME B18.2.1 ASME B18.2.2 ASME B18.21.1
Metric ASME B18.3.6M ASME B18.4.6M ASME B18.22M
Metric DIN 6914 DIN 6915 DIN 6916