High Collar Lock Washer - A2 Stainless Steel

Stainless Steel Metric High Collar Lock Washers

Stainless Steel High Profile Split Ring Lock Washers in Metric Sizes


High Collar Split Ring Lock Washers, also referred to as high collar spring lock washers, are circular washers split at a certain point to create a helical shape.

  • This shape applies force between the head of a bolt and installation surface
  • Creates a resistance to rotation and prevents vibrating loose
  • Have a higher profile (thicker) than standard split ring lock washers
  • Designed to fit under the head of a socket cap screw
  • A2 Stainless steel is corrosion resistant
Actual measurements may vary slightly +/- depending on production run within IFI Tolerances


Sizes Inner Diameter Outer Diameter Thickness
2MM 2.1 4.4 0.63
3MM 3.1 6.2 1.11
4MM 4.1 7.6 1.20
5MM 5.1 9.2 1.58
6MM 6.1 11.8 1.60
8MM 8.1 14.8 2.14
10MM 10.2 18.1 2.42
12MM 12.2 24.1 3.42
14MM 14.2 21.1 3.47
16MM 16.2 27.4 4.51
18MM 18.2 29.4 5.25
20MM 20.2 33.6 6.00
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