THREAD: AS8879
MATERIAL: H14-04 thru H14-6 carbon or alloy steel, heat treated. H14-7 thru H14-20 430 alloy steel per AMS6414 or AMS6415 (UNS G43400) or 8740 alloy steel per AMS6322 (UNS G87400).
FINISH: Cadmium plate per AMS-QQ-P-416, Type II, Class 2 and molybdenum disulfide dry film lubricant per AS5272, Type I.
PERFORMANCE: NASM25027 except axial tensile strength as tabulated.
TEMPERATURE: 450°F
NOTES: "C" and "W" dimensions apply after self-locking action. Unless otherwise specified, surface finish 125 microinches.
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Item #

A - MAX

B - MIN

C - MIN

D

F ± .015

H - MAX

H - MIN

S - MIN

V - REF

W

X - MIN

Y

Axial Tensile Strength (LBS. MIN)

Approx. Weight (LBS/100)

Thread

H14-04 N/A 0.206 N/A N/A 0.138 N/A N/A N/A 0.125 N/A N/A 0.050 N/A 0.025 N/A 0.127-0.121 N/A N/A N/A 1110 N/A 0.030 N/A 0.1120-40 UNJC-3B
H14L04 N/A 0.206 N/A N/A 0.171 N/A N/A N/A 0.125 N/A N/A 0.050 N/A 0.025 N/A 0.158-0.150 N/A N/A N/A 1110 N/A 0.040 N/A 0.1120-40 UNJC-3B
H14-06 N/A 0.244 N/A N/A 0.171 N/A N/A N/A 0.141 N/A N/A 0.055 N/A 0.032 N/A 0.158-0.152 N/A N/A N/A 1670 N/A 0.050 N/A 0.1380-32 UNJC-3B
H14L06 N/A 0.244 N/A N/A 0.207 N/A N/A N/A 0.141 N/A N/A 0.055 N/A 0.032 N/A 0.190-0.181 N/A N/A N/A 1670 N/A 0.070 N/A 0.1380-32 UNJC-3B
H14-640 N/A 0.244 N/A N/A 0.171 N/A N/A N/A 0.141 N/A N/A 0.055 N/A 0.032 N/A 0.158-0.152 N/A N/A N/A 1795 N/A 0.050 N/A 0.1380-40 UNJF-3B
H14-08 N/A 0.290 N/A N/A 0.207 N/A N/A N/A 0.170 N/A N/A 0.060 N/A 0.035 N/A 0.190-0.183 N/A N/A N/A 2590 N/A 0.090 N/A 0.1640-32 UNJC-3B
H14L08 N/A 0.290 N/A N/A 0.244 N/A N/A N/A 0.170 N/A N/A 0.060 N/A 0.035 N/A 0.221-0.213 N/A N/A N/A 2590 N/A 0.110 N/A 0.1640-32 UNJC-3B
H14-836 N/A 0.290 N/A N/A 0.207 N/A N/A N/A 0.170 N/A N/A 0.060 N/A 0.035 N/A 0.190-0.183 N/A N/A N/A 2590 N/A 0.090 N/A 0.1640-36 UNJF-3B
H14-3 N/A 0.330 N/A N/A 0.277 N/A N/A N/A 0.188 N/A N/A 0.065 N/A 0.035 N/A 0.252-0.243 N/A N/A N/A 3370 N/A 0.180 N/A 0.1900-32 UNJF-3B
H14-4 N/A 0.420 N/A N/A 0.347 N/A N/A N/A 0.219 N/A N/A 0.090 N/A 0.045 N/A 0.316-0.304 N/A N/A N/A 6200 N/A 0.300 N/A 0.2500-28 UNJF-3B
H14-5 N/A 0.520 N/A N/A 0.419 N/A N/A N/A 0.266 N/A N/A 0.120 N/A 0.050 N/A 0.378-0.367 N/A N/A N/A 9820 N/A 0.550 N/A 0.3125-24 UNJF-3B
H14-6 N/A 0.620 N/A N/A 0.491 N/A N/A N/A 0.282 N/A N/A 0.125 N/A 0.060 N/A 0.440-0.430 N/A N/A N/A 15200 N/A 0.760 N/A 0.3750-24 UNJF-3B
H14-7 N/A 0.720 N/A 0.675 N/A 0.562 N/A 0.468-0.438 N/A 0.025 N/A 0.328 N/A 0.308 N/A 0.150 N/A 0.070 N/A 0.505-0.494 N/A 0.114 N/A 0.005 N/A 20600 N/A 1.260 N/A 0.4375-20 UNJF-3B
H14-8 N/A 0.820 N/A 0.775 N/A 0.633 N/A 0.530-0.500 N/A 0.025 N/A 0.480 N/A 0.460 N/A 0.220 N/A 0.080 N/A 0.566-0.555 N/A 0.152 N/A 0.005 N/A 27400 N/A 2.070 N/A 0.5000-20 UNJF-3B
H14-9 N/A 0.922 N/A 0.872 N/A 0.775 N/A 0.593-0.563 N/A 0.025 N/A 0.540 N/A 0.520 N/A 0.240 N/A 0.090 N/A 0.692-0.680 N/A 0.160 N/A 0.006 N/A 34800 N/A 3.260 N/A 0.5625-18 UNJF-3B
H14-10 N/A 1.027 N/A 0.977 N/A 0.846 N/A 0.655-0.625 N/A 0.025 N/A 0.600 N/A 0.580 N/A 0.250 N/A 0.105 N/A 0.755-0.743 N/A 0.170 N/A 0.006 N/A 43600 N/A 4.150 N/A 0.6250-18 UNJF-3B
H14-12 N/A 1.221 N/A 1.181 N/A 0.987 N/A 0.780-0.750 N/A 0.030 N/A 0.730 N/A 0.710 N/A 0.310 N/A 0.105 N/A 0.877-0.865 N/A 0.183 N/A 0.007 N/A 63200 N/A N/A 0.7500-16 UNJF-3B
H14-14 N/A 1.418 N/A 1.378 N/A 1.130 N/A 0.905-0.875 N/A 0.030 N/A 0.855 N/A 0.835 N/A 0.350 N/A 0.110 N/A 1.002-0.990 N/A 0.205 N/A 0.008 N/A 86300 N/A N/A 0.8750-14 UNJF-3B
H14-1612 N/A 1.625 N/A 1.575 N/A 1.271 N/A 1.030-1.000 N/A 0.035 N/A 0.980 N/A 0.950 N/A 0.400 N/A 0.120 N/A 1.127-1.115 N/A 0.230 N/A 0.009 N/A 112400 N/A N/A 1.0000-12 UNJF-3B
H14-18 N/A 1.822 N/A 1.772 N/A 1.406 N/A 1.155-1.125 N/A 0.035 N/A 1.100 N/A 1.070 N/A 0.580 N/A 0.150 N/A 1.252-1.239 N/A 0.250 N/A 0.010 N/A 144100 N/A N/A 1.1250-12 UNJF-3B
H14-20 N/A 2.019 N/A 1.969 N/A 1.620 N/A 1.280-1.250 N/A 0.040 N/A 1.230 N/A 1.200 N/A 0.665 N/A 0.170 N/A 1.440-1.427 N/A 0.285 N/A 0.011 N/A 179700 N/A N/A 1.2500-12 UNJF-3B
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