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  • H38 Wrenchable Twelve Point Nut - Reduced Wrench
THREAD: AS8879
MATERIAL: Waspaloy per AMS 5709 (UNS N07001).
FINISH: Silver plate per AMS 2411.
PERFORMANCE: AS 7253 when tested with bolts having .003 reduced thread diameters
APPLICATIONS: Temperature rating: 1400°F
NOTE: "C" and "W" dimensions apply before forming self-locking action.
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Item #

A - MAX

B - MIN

C - MIN

H - MAX

S - MIN

V - REF

W

Axial Tensile Strength (LBS. MIN)

Locking Torque (LBS-IN)

Approx. Weight (LBS/100)

Thread

H38-08 N/A 0.284 N/A 0.264 N/A 0.243 N/A 0.250 N/A 0.070 N/A 0.025 N/A 0.221-0.212 N/A 2153 N/A 1.5-11 N/A 0.160 N/A 0.1640-32 UNJC-3B
H38-3 N/A 0.350 N/A 0.325 N/A 0.279 N/A 0.250 N/A 0.080 N/A 0.030 N/A 0.252-0.243 N/A 3150 N/A 2.0-15 N/A 0.230 N/A 0.1900-32 UNJF-3B
H38-4 N/A 0.440 N/A 0.410 N/A 0.351 N/A 0.328 N/A 0.095 N/A 0.050 N/A 0.315-0.306 N/A 5868 N/A 3.5-30 N/A 0.410 N/A 0.2500-28 UNJF-3B
H38-5 N/A 0.525 N/A 0.495 N/A 0.421 N/A 0.360 N/A 0.110 N/A 0.060 N/A 0.377-0.362 N/A 9432 N/A 6.5-60 N/A 0.690 N/A 0.3125-24 UNJF-3B
H38-6 N/A 0.598 N/A 0.559 N/A 0.496 N/A 0.458 N/A 0.155 N/A 0.070 N/A 0.439-0.424 N/A 14562 N/A 9.5-80 N/A 1.000 N/A 0.3750-24 UNJF-3B
H38-7 N/A 0.692 N/A 0.652 N/A 0.638 N/A 0.531 N/A 0.170 N/A 0.090 N/A 0.565-0.550 N/A 19620 N/A 14-100 N/A 1.940 N/A 0.4375-20 UNJF-3B
H38-8 N/A 0.786 N/A 0.746 N/A 0.707 N/A 0.578 N/A 0.185 N/A 0.110 N/A 0.628-0.612 N/A 26748 N/A 30-150 N/A 2.600 N/A 0.5000-20 UNJF-3B
H38-9 N/A 0.880 N/A 0.840 N/A 0.775 N/A 0.633 N/A 0.205 N/A 0.115 N/A 0.690-0.679 N/A 33984 N/A 50-200 N/A 3.280 N/A 0.5625-18 UNJF-3B
H38-10 N/A 0.973 N/A 0.930 N/A 0.881 N/A 0.687 N/A 0.235 N/A 0.120 N/A 0.785-0.772 N/A 43200 N/A 50-300 N/A 4.130 N/A 0.6250-18 UNJF-3B
H38-12 N/A 1.252 N/A 1.200 N/A 1.059 N/A 0.796 N/A 0.310 N/A 0.140 N/A 0.943-0.928 N/A 63236 N/A 50-400 N/A 8.600 N/A 0.7500-16 UNJF-3B
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