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THREAD: AS8879
MATERIAL: Alloy steel per AMS 6304 (UNS K14675). Heat treat - Rc 40-44.
FINISH: Cadmium plate per AMS-QQ-P-416, Type II, Class 2. Plus Kaylube per AS5272, Type I.
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

S - MIN

V - REF

W

Axial Tensile Strength (LBS. MIN)

Approx. Weight (LBS/100)

Thread

H23-3 N/A 0.350 N/A 0.277 N/A 0.250 N/A 0.080 N/A 0.040 N/A 0.251-0.243 N/A 4980 N/A 0.210 N/A 0.1900-32 UNJF-3B
H23-4 N/A 0.450 N/A 0.348 N/A 0.328 N/A 0.095 N/A 0.045 N/A 0.313-0.305 N/A 8900 N/A 0.420 N/A 0.2500-28 UNJF-3B
H23-5 N/A 0.566 N/A 0.419 N/A 0.360 N/A 0.110 N/A 0.055 N/A 0.376-0.367 N/A 14100 N/A 0.700 N/A 0.3125-24 UNJF-3B
H23-6 N/A 0.670 N/A 0.491 N/A 0.458 N/A 0.155 N/A 0.065 N/A 0.439-0.430 N/A 20900 N/A 1.200 N/A 0.3750-24 UNJF-3B
H23-7 N/A 0.770 N/A 0.561 N/A 0.531 N/A 0.170 N/A 0.075 N/A 0.502-0.492 N/A 28300 N/A 1.800 N/A 0.4375-20 UNJF-3B
H23-8 N/A 0.870 N/A 0.631 N/A 0.578 N/A 0.185 N/A 0.085 N/A 0.564-0.553 N/A 37800 N/A 2.550 N/A 0.5000-20 UNJF-3B
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