Imperial 57106 USS Lock Nut, 1/4"-20", Grade C, Per Package Of 100

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Prevailing Torque. For use with SAE J429 Grade 8 Fasteners. Complies with ASTM A563. Grade C. IFI 100/107. All metal, plated, and waxed. Per package of 100.
SKU: 42645713
MFG: 57106
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  • Prevailing Torque 
  • USS Lock Nut
  • For use with SAE J429 Grade 8 Fasteners
  • Complies with ASTM A563 Grade C, IFI 100/107
  • All metal, plated, and waxed
  • Proof Load: 150,000 minimum
  • Locks in all positions
  • One piece all steel. Easy to apply
  • Size: 1/4"-20"
  • Width across flats: 7/16
  • Nominal thickness: 1/4
  • Per package of 100

Technical Data:

  • Tempering temperature: 800° F. (minimum)
  • Decarburation: SAE J121
  • Discontinuities: SAE J1061


MFR: 57106
SKU: 42645713
Brand: Imperial