642AS0748

Screw

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Description:

Fastener Length: 43/64", Thread: 1/4-20, Head Width: 5/32", Thread Length: 31/64"

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642AS0748 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.449 inches minimum and 0.489 inches maximum
Fastener Length:
0.636 inches minimum and 0.676 inches maximum
Head Style:
Flat countersunk undercut
Head Diameter:
0.4640 inches minimum and 0.5066 inches maximum
Head Height:
0.070 inches minimum and 0.073 inches maximum
Locking Feature:
Pellet threads
Internal Drive Style:
Hexagon
Thread Diameter:
0.250 inches
Width Across Flats:
0.1562 inches minimum and 0.1585 inches maximum
Thready Qty Per Inch (tpi):
20
Min. Tensile Strength (psi):
160000 pounds per square inch
Countersink Angle:
100.0 degrees nominal
Surface Finish:
32.0 microinches bearing surface of head
Surface Finish:
32.0 microinches grip
Surface Finish:
32.0 microinches threads
Special Features:
Furnished with one o ring
Material:
Iron alloy 660 overall
Material Specification:
Ams5732 assn std single material response overall or ams5737 assn std single material response overall
Surface Treatment:
Passivate overall
Surface Treatment Specification:
Qq-p-35,ty 1,ty 2,ty 3 or ty 6 fed spec single treatment response overall
Thread Series Designator:
Unjc
Quick Specs
Thread Size 1/4
Thread Qty 20
Material Iron
Length 43/64

Additional Information

SKU / Model: 642AS0748
NSN: 5305-01-078-5070
FSC: Screws / 5305
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 1 EA
Schedule B: 7318.15.6080
ECCN: 9A991
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
642AS0748_Military-Fasteners-com.pdf
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