Square Nuts - Black Oxide

Black Nuts for use with Machine bolts and machine screws.

Head thickness:

  • 8-32  = 1/8" thick
  • 1/4"   = 0.2"
  • 5/16" = 1/4" thick
  • 3/8"   = 5/16"
  • 1/2"   = 7/16" thick 
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