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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.
Unit of Measure

Specifications

A - MAX

N/A 0.464

C - MIN

N/A 0.361

H - MAX

N/A 0.245

W

N/A 0.316 in0.316-0.306

Axial Tensile Strength (LBS. MIN)

N/A 4580

Approx. Weight (LBS/100)

N/A 0.360

Thread Type

N/A Unified

Configuration 1

N/A Hex

Configuration 2

N/A Captive Washer

Lock

N/A Crimp Lock

Simplified Material

N/A CRES

Strength

N/A 160KSI - 1100Mpa

Temperature

N/A 450°F - 235°C

Thread

N/A 0.2500-28 UNJF-3B

Part Family

N/A HW42