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MS24671-42

Hexagon Socket Flat Head Cap Screw

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Description

Fastener Length: 1-9/32", Thread: 1/4-18, Head Width: 3/16", Thread Length: 0-63/64", MS24671 series screw

Specifications

Countersink Angle Between 80.0 degrees and 84.0 degrees
Drive Style Hexagon
Fastener Length Between 1.234 inches and 1.281 inches
Finish Passivate
Hardness Rating 80.0 rockwell b
Head Diameter Between 0.600 inches and 0.656 inches
Head Style Flat Head, Flat countersunk
Internal Drive Style Hexagon
Length 1 1/4
Material CRES
Material Specification 66 federal standard 1st material response or 66 federal standard 2nd material response or 66 federal standard 3rd material response or 66 federal standard 4th material response or 66 federal standard 5th material response or astm-a493 aisi xm-7 assn standard 6th material response
Min. Tensile Strength (psi) 80000 pounds per square inch
Minimum Yield Strength 30000 pounds per square inch
Nondefinitive Specification/Std Data 4 type
Size 5/16-18
Surface Treatment Passivate
Surface Treatment Specification Qq-p-35 federal specification single treatment response
Thread Class 3a
Thread Diameter 0.312
Thread Direction Right-hand
Thread Length Between 0.925 inches and 1.083 inches
Thread Qty Per Inch (tpi) 18
Thread Series UNC
Thread Series Designator Unc (coarse thread)
Thread Size 1/4
Thread Type N.C. - Coarse
Width Across Flats 0.188

Cross-reference

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