Aeronautical Standard Machine Bolt

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length: 2-5/32", grip: 1-11/16", thread: 1/4-28, cadmium plated steel undrilled shank

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AN174-21A Features and Specification

Thread Class:
Thread Direction:
Thread Length:
0.437 inches minimum and 0.516 inches maximum
Fastener Length:
2.140 inches minimum and 2.187 inches maximum
Head Style:
Head Height:
0.140 inches minimum and 0.172 inches maximum
Width Between Flats:
0.428 inches minimum and 0.440 inches maximum
Thread Diameter:
0.250 inches
Grip Length:
1.671 inches minimum and 1.703 inches maximum
Features Provided:
Finished head
Thready Qty Per Inch (tpi):
Min. Tensile Strength (psi):
125000 pounds per square inch
Hardness Rating:
26.0 rockwell c minimum overall and 32.0 rockwell c maximum overall
Surface Finish:
63.0 microinches bearing surface of head
Surface Finish:
63.0 microinches grip
Steel comp 4140 overall or steel comp 8740 overall or steel comp 8630 overall or steel comp 8735 overall or steel comp 4130 overall or steel comp 4037 overall
Material Specification:
Mil-s-5626 mil spec 1st material response overall or mil-s-6049 mil spec 2nd material response overall or mil-s-6050 mil spec 3rd material response overall or mil-s-6098 mil spec 4th material response overall or mil-s-6758 mil spec 5th material response overall or ams 6300 assn std 6th material response overall
Surface Treatment:
Cadmium overall and chromate overall
Surface Treatment Specification:
Qq-p-416 ty 2 cl 3 fed spec all treatment responses overall
Thread Series Designator:

Additional Information

SKU / Model: AN17421A
NSN: 5306-00-182-1801
FSC: Bolts / 5306
Product Series: AN174
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 10
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
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$1.92 Each, Length: 1-13/32in., grip: 15/16in., thread: 1/4-28, cadmium plated steel undrilled shank

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