#510088

#4  Hi Collar Spring Lockwasher Spring Steel Plain Finish
Bolt Size Thread Threads Length Grade Finish Weight
0.1120 (#4) Partial Plain Finish 0.0004
Diameter
Thread
Length
Grade
Finish Plain Finish
Weight 0.0004



Hi Collar Helical Spring Washers are designed to prevent loosening in vibrating applications. The circular coil grabs onto the head and material being fastened, creating a locking action. Hi Collar Helical Spring Washers are through hardened and tall to improve strength, performance, and spacer. Hi collar lock washers are popular for use with socket head cap screws in counterbored holes.

Hi Collar Helical Spring Washer – Grade 8 or better

  • Prevents loosening in high-vibration applications
  • Extra tall
  • Used in high-demand assemblies
  • Sizes range from 1/4 to 2 1/2
  • Meets ANSI B18.21.1 standards
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