K-nut M8x1,25 (6 point) + Captive Washer

The hexagonal M8 x 1.25 k-nut with captive washer is an elliptical deformed self locking nut. This nut is typically used on aluminium casted housings.

M8x1.25 hexagonal K-nut with captive washer



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  • Nominal diameter: M8
  • Pitch: 1,25 mm
  • Tolerance: 4H-5H
  • Spanner size: 10 mm
  • Weight per 100pcs: 0,39 kg
  • Material: DIN 1.7220.3 – 35CrMo4 – AISI 4135/4137 (nut) & 25CD4 (washer)
  • Hardness: max. 44 HRC
  • Class: 1100 MPa tensile strength
  • Max temperature: 235 °C = 455 °F
  • Surface: cadmium-plated + MoS2 low friction coating

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