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NAS1580V4T24

Close Tolerance Screw

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Description

Flush Reduced Head Bolt

Specifications

Countersink Angle 99.0 degrees minimum and 101.0 degrees maximum
Country of Origin USA
Fastener Length 1.888 inches minimum and 1.918 inches maximum
Grip Diameter 0.2490 inches minimum and 0.2495 inches maximum
Grip Length 1.490 inches minimum and 1.510 inches maximum
Head Diameter 0.464 inches minimum and 0.507 inches maximum
Head Style Flat countersunk
Internal Drive Style Offset cruciform (torque set)
Length 1 29/32
Material Titanium
Material Specification Ams4967 comp 6al-4v assn std single material response
Min. Tensile Strength (psi) 160000 pounds per square inch
NIIN 01-171-3610
NSN 5305-01-171-3610
Specification Data 80205-nas1580 professional/industrial association standard
Surface Finish 32.0 microinches grip, 32.0 microinches threads
Thread Class 3a
Thread Diameter 0.250
Thread Direction Right-hand
Thread Length 0.378 inches minimum and 0.428 inches maximum
Thread Qty 28
Thread Qty Per Inch (tpi) 28
Thread Series Designator UNJF
Thread Size 1/4
Weight .0015 lb

Other sizes

Parts that share this base number, ordered by size. Always verify the full specification before substituting.

Cross-reference

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