AN4-20

Aeronautical Standard Airframe Bolt, Drilled

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Description:

length: 2-1/32, grip: 1-9/16", thread: 1/4-28, cadmium plated steel - drilled shank

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AN4-20 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.469 inches minimum
Fastener Length:
2.031 inches nominal
Head Style:
Hexagon
Head Height:
0.140 inches minimum and 0.172 inches maximum
Width Between Flats:
0.428 inches minimum and 0.440 inches maximum
Shank Unthreaded Hole Diameter:
0.076 inches minimum first hole
Thread Diameter:
0.250 inches
Grip Length:
1.562 inches nominal
Features Provided:
Finished head
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
125000 pounds per square inch
Hardness Rating:
26.0 rockwell c minimum overall and 32.0 rockwell c maximum overall
Distance From Head Largest Bearing Surface To Shank Hole Center:
1.874 inches nominal first hole
Material:
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 mil-s-8695 mil spec 6th material response overall
Surface Treatment:
Cadmium overall and chromate overall
Surface Treatment Specification:
Qq-p-416 ty2 2 cl 3 fed spec all treatment responses overall
Thread Series Designator:
Unf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Steel
Length 2-

Additional Information

SKU / Model: AN420
NSN: 5306-00-151-1005
FSC: Bolts / 5306
Product Series: AN4
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 20
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
AN4-20_Military-Fasteners-com.pdf
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