THREAD: AS8879
MATERIAL:
  • Nut - A286 corrosion resistant steel per AMS 5732 or AMS 5737 (UNS S66286).
  • Washer - 321 stainless steel per AMS 5510 (UNS S32100).
FINISH:
  • Nut - Passivated per AMS-QQ-P-35 and Kaylube molybdenum disulfide dry lubricant per AS5272, Type I.
  • Washer - Passivated per AMS-QQ-P-35.
PERFORMANCE: NASM25027, except as follows:
  • Axial tensile strength as tabulated.
NOTES "C" and "W" dimensions apply before forming self-locking feature.
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Item #

A - MAX

C - MIN

H - MAX

W

Axial Tensile Strength (LBS. MIN)

Approx. Weight (LBS/100)

Thread

HW42-06 N/A 0.278 N/A 0.180 N/A 0.167 N/A 0.158-0.152 N/A 1150 N/A 0.080 N/A 0.1380-32 UNJC-3B
HW42-08 N/A 0.324 N/A 0.216 N/A 0.194 N/A 0.190-0.183 N/A 1720 N/A 0.130 N/A 0.1640-32 UNJC-3B
HW42-3 N/A 0.364 N/A 0.289 N/A 0.214 N/A 0.252-0.245 N/A 2460 N/A 0.220 N/A 0.1900-32 UNJF-3B
HW42-4 N/A 0.464 N/A 0.361 N/A 0.245 N/A 0.316-0.306 N/A 4580 N/A 0.360 N/A 0.2500-28 UNJF-3B
HW42-5 N/A 0.564 N/A 0.433 N/A 0.292 N/A 0.378-0.369 N/A 7390 N/A 0.630 N/A 0.3125-24 UNJF-3B
HW42-6 N/A 0.664 N/A 0.505 N/A 0.308 N/A 0.440-0.431 N/A 11450 N/A 0.870 N/A 0.3750-24 UNJF-3B
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