20-057-4-15D

Bolt

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Description:

Fastener Length: 1-3/8", Thread: 1/4-28, Thread Length: 7/16"

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20-057-4-15D Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.400 inches minimum and 0.450 inches maximum
Fastener Length:
1.348 inches minimum and 1.378 inches maximum
Head Style:
Hexagon
Head Height:
0.125 inches minimum and 0.140 inches maximum
Width Between Flats:
0.430 inches minimum and 0.439 inches maximum
Grip Diameter:
0.2485 inches minimum and 0.2495 inches maximum
Shank Unthreaded Hole Diameter:
0.076 inches minimum first hole and 0.086 inches maximum first hole
Thread Diameter:
0.250 inches
Grip Length:
0.928 inches minimum and 0.948 inches maximum
Features Provided:
Finished head
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
160000 pounds per square inch
Hardness Rating:
36.0 rockwell c minimum overall and 40.0 rockwell c maximum overall
Distance From Head Largest Bearing Surface To Shank Hole Center:
1.160 inches minimum first hole and 1.210 inches maximum first hole
Surface Finish:
32.0 microinches threads
Surface Finish:
63.0 microinches bearing surface of head
Surface Finish:
63.0 microinches grip
Material:
Steel comp 4140 overall or steel comp e4340 overall or steel comp 6150 overall or steel comp 8735 overall or steel comp 8740 overall
Surface Treatment:
Cadmium overall and chromate overall
Surface Treatment Specification:
Qq-p-416,type 2,class 2 fed spec single treatment response overall
Thread Series Designator:
Unjf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Steel
Length 1-3/8

Additional Information

SKU / Model: 20057415D
NSN: 5306-01-048-6085
FSC: Bolts / 5306
Product Series: 20
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 1 EA
Schedule B: 7318.15.8085
ECCN: 9A991.
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
20-057-4-15D_Military-Fasteners-com.pdf
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