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THREAD: AS8879
MATERIAL: Alloy steel, heat threated.
FINISH: Cadmium plated per NASM25027 to meet the salt spray requirments of Fed, Spec. AMS-QQ-P-416, Type II, plating. Kaylube molybdenum disulfide dry lubricant coated per AS5272, Type I after plating.
PROCUREMENT SPEC: NASM25027 except axial tensile strength as tabulated, is equivalent ot 160 000 PSI, at the pitch diameter: and will be obtained when tested on bolts or screws having a minimum tensile strength of 180 000 PSI, and wrench torque applied with standard socket upgraded to 160 000 PSI.
TEMPERATURE RANGE: To 450°F.
MISALIGMENT: Up to 8° in any direction from centered position when seated on mating K19301 washer.
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Item #

Used with washer

H - MAX

L - MAX

N - MIN

R + .015

W

X - MAX

Axial Tensile Strength (LBS. MIN)

Approx. Weight (LBS/100)

Thread

Part Family

Sort by
N/A K19301-3 N/A 0.188 N/A 0.330 N/A 0.277 N/A 0.250 N/A 0.251 in0.251-0.243 N/A 0.270 N/A 3470 N/A 0.170 N/A 0.1900-32 UNJF-3B N/A H19300
N/A K19301-4 N/A 0.219 N/A 0.420 N/A 0.348 N/A 0.312 N/A 0.313 in0.313-0.305 N/A 0.305 N/A 6200 N/A 0.300 N/A 0.2500-28 UNJF-3B N/A H19300
N/A K19301-5 N/A 0.266 N/A 0.520 N/A 0.419 N/A 0.375 N/A 0.376 in0.376-0.367 N/A 0.350 N/A 9820 N/A 0.520 N/A 0.3125-24 UNJF-3B N/A H19300
N/A K19301-6 N/A 0.282 N/A 0.620 N/A 0.491 N/A 0.437 N/A 0.439 in0.439-0.430 N/A 0.385 N/A 15200 N/A 0.720 N/A 0.3750-24 UNJF-3B N/A H19300
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