NAS1581F4R3

Bolt

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Description:

Fastener Length: 19/32", Thread: 1/4-28, Thread Length: 27/64"

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NAS1581F4R3 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.378 inches minimum and 0.428 inches maximum
Fastener Length:
0.575 inches minimum and 0.605 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.350 inches minimum and 0.399 inches maximum
Grip Diameter:
0.2485 inches minimum and 0.2495 inches maximum
Internal Drive Style:
Offset cruciform (torque set)
Thread Diameter:
0.250 inches
Grip Length:
0.177 inches minimum and 0.197 inches maximum
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
160000 pounds per square inch
Hardness Rating:
36.0 rockwell c minimum overall and 40.0 rockwell c maximum overall
Countersink Angle:
99.0 degrees minimum and 101.0 degrees maximum
Surface Finish:
32.0 microinches grip
Surface Finish:
32.0 microinches threads
Special Features:
Internal drive ribbed
Material:
Iron alloy 660 overall
Material Specification:
Ams 5731 assn std single material response overall or ams 5732 assn std single material response overall or ams 5737 assn std single material response overall
Surface Treatment:
Cadmium overall and chromate overall
Surface Treatment Specification:
Qq-p-416,ty 2 cl 2 fed spec single treatment response overall
Thread Series Designator:
Unjf
Specification Data:
80205-nas1581 professional/industrial association standard
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Iron
Length 19/32

Additional Information

SKU / Model: NAS1581F4R3
NSN: 5305-01-191-0413
FSC: Screws / 5305
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 5 EA
Schedule B: 7318.15.8085
ECCN: 9A991
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
NAS1581F4R3_Military-Fasteners-com.pdf
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