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Fastener Length: 55/64", Thread: 1/4-28, Thread Length: 31/64"

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3M925C4-6A Features and Specification

Thread Class:
Thread Direction:
Thread Length:
0.444 inches minimum and 0.494 inches maximum
Fastener Length:
0.829 inches minimum and 0.859 inches maximum
Head Style:
Flat countersunk undercut
Head Diameter:
0.5018 inches minimum and 0.5066 inches maximum
Head Height:
0.0713 inches minimum and 0.0733 inches maximum
Grip Diameter:
0.2485 inches minimum and 0.2495 inches maximum
Internal Drive Style:
Thread Diameter:
0.250 inches
Grip Length:
0.365 inches minimum and 0.385 inches maximum
Thready Qty Per Inch (tpi):
Countersink Angle:
99.0 degrees minimum and 101.0 degrees maximum
Surface Finish:
32.0 microinches grip
Surface Finish:
32.0 microinches threads
Special Features:
Furnished with one o ring
Steel comp xm-13 overall
Material Specification:
Ams 5629 assn std single material response overall
Surface Treatment:
Aluminum overall and chromate overall
Surface Treatment Specification:
Mil-c-83488 ty 2 cl 3 mil spec single treatment response overall
Thread Series Designator:

Additional Information

SKU / Model: 3M925C46A
Minimum Qty (MOQ): 5 EA
NSN: 5305-01-097-8220
FSC: Screws / 5305
Schedule B: 7318.15.6080
ECCN: 9A991
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
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More 3M925C4 close tolerance screws


Fastener Length: 55/64", Thread: 1/4-28, Thread Length: 13/32"

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