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MS16997-70

Hexagon Socket Cap Screw

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Description

Fastener Length: 2-63/64", Thread: 1/4-20, Head Width: 3/16", Thread Length: 63/64

Specifications

Fastener Length 2.940 inches minimum and 3.000 inches maximum
Finish Cadmium ll
Hardness Rating 36.0 rockwell c minimum and 45.0 rockwell c maximum
Head Diameter 0.365 inches minimum and 0.375 inches maximum
Head Height 0.244 inches minimum and 0.250 inches maximum
Head Style Flat chamfer
Internal Drive Style Hexagon
Length 2 63/64
Material Steel
Min. Tensile Strength (psi) 160000 pounds per square inch
Minimum Yield Strength 130000 pounds per square inch
Size 1/4-20
Surface Treatment Cadmium and chromate
Surface Treatment Specification Qq-p-416,ty 2,cl 3 fed spec all treatment responses
Thread Class 3a
Thread Diameter 0.250
Thread Direction Right-hand
Thread Length 0.940 inches minimum and 1.000 inches maximum
Thread Qty 20
Thread Qty Per Inch (tpi) 20
Thread Series Designator UNC
Thread Size 1/4
Thread Type N.C. - Coarse
Width Across Flats 0.187 inches minimum and 0.190 inches maximum

Cross-reference

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Catalog data updated 2026-07-05. Report a data error