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Flush Reduced Head Bolt NAS1581C4T8

Description:

Length: 0.903", thread: 1/2-28, shear 100° , flush reduced head bolt, cadmium plated corrosion resistant steel, offset cruciform

NAS1581C4T8 Details

National Stock Number (NSN) 5305-01-058-4633
Alternate Part Number N/A
Federal Supply Class (FSC) 5305
Unit of Measure (UOM) 50 /Ea.
Thread Class 3a
Thread Direction Right-hand
Thread Length Between 0.378 inches and 0.428 inches
Fastener Length Between 0.888 inches and 0.918 inches
Head Style Flat countersunk
Head Diameter Between 0.350 inches and 0.399 inches
Grip Diameter Between 0.2485 inches and 0.2495 inches
Internal Drive Style Offset cruciform (torque set)
Thread Diameter 0.250 inches
Grip Length Between 0.490 inches and 0.510 inches
Thready Qty Per Inch (tpi) 28
Min. Tensile Strength (psi) 160000 pounds per square inch
Countersink Angle 100.0 degrees
Surface Finish 32.0 microinches grip
Surface Finish 32.0 microinches threads
Material Iron alloy 660
Material Specification Ams 5731 assn standard single material response or ams 5732 assn standard single material response or ams 5737 assn standard single material response
Surface Treatment Passivate
Surface Treatment Specification Qq-p-35 federal specification single treatment response
Thread Series Designator Unjf
Specification Data 80205-nas1581 professional/industrial association standard

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