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Flush Reduced Head Bolt NAS1581F3R2

Description:

Length: 0.487

NAS1581F3R2 Details

National Stock Number (NSN) 5305-01-432-5625
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 0.363 inches
Fastener Length Between 0.472 inches and 0.502 inches
Head Style Flat countersunk
Head Diameter Between 0.258 inches and 0.305 inches
Grip Diameter Between 0.2485 inches and 0.2495 inches
Internal Drive Style Torque-set ribbed
Thread Diameter 0.190 inches
Grip Length Between 0.115 inches and 0.135 inches
Thready Qty Per Inch (tpi) 32
Min. Tensile Strength (psi) 160000 pounds per square inch
Countersink Angle Between 99.0 degrees and 101.0 degrees
Material Steel comp 4140 or steel comp 4340 or steel comp 8740
Material Specification Mil-s-5626 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-6049 military specification 3rd material response
Surface Treatment Cadmium and chromate
Surface Treatment Specification Qq-p-416, type 2, class 2 federal specification all treatment responses
Thread Series Designator Unjf

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