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NAS1351-4-36P

Socket Head Cap Screw

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Description

Fastener Length: 2-1/4", Thread: 1/4-28, Head Width: 3/16", Thread Length: 1", NAS1351 series screw

Specifications

Drive Style Hexagon
Fastener Length 2.25
Hardness Rating 38.0 rockwell c and 45.0 rockwell c
Head Diameter Between 0.365 inches and 0.375 inches
Head Height Between 0.244 inches and 0.250 inches
Head Style Flat chamfer
Internal Drive Style Hexagon
Length 2 1/4
Material Steel
Material Specification 66 federal standard single material response
Min. Tensile Strength (psi) 170000 pounds per square inch
Minimum Yield Strength 150000 pounds per square inch
Nondefinitive Specification/Std Data 6 type
Specification Data 80205-nas1351 professional/industrial association standard
Surface Treatment Cadmium and chromate
Surface Treatment Specification Cl 2 federal specification single treatment response type 2 ams-qq-p-416
Thread Class 3a
Thread Diameter 0.250
Thread Direction Right-hand
Thread Length 1.000
Thread Qty 28
Thread Qty Per Inch (tpi) 28
Thread Series UNRF
Thread Series Designator UNRF
Thread Size 1/4
Width Across Flats Between 0.188 inches and 0.190 inches

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