Hi-Temp K-nut 5/8″-18 (6 point)

The high temp .6250-18 UNJF-3B k-nut is an elliptical deformed self locking nut for high temperature applications. This nut is typically used in motorsports and aerospace applications.



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  • Thread: .6250-18 UNJF-3B
  • Axial tensile strength min.: 34130 lbs
  • Spanner size: 3/4″
  • Weight per 100pcs: 2,04 kg = 4.5 lbs
  • Material: 1.4944.4 – A286 CRES
  • Hardness: 27-37 HRC
  • Class: 1100 MPa tensile strength
  • Max temperature: 425 °C = 800 °F
  • Surface: Silver plating

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