NAS1581A4T4

Close Tolerance Screw

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Description:

Fastener Length: 21/32", Thread: 1/4-28, Thread Length: 27/64", NAS1581 series screw

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NAS1581A4T4
NAS1581A4T4
NAS1581A4T4
NAS1581A4T4
NAS1581A4T4
NAS1581A4T4
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NAS1581A4T4 Datasheet Features and Specification

Thread Series Designator:
Unjf (fine thread with external controlled root radius)
Thread Length:
Between 0.378 inches and 0.428 inches
Thread Qty Per Inch (tpi):
28
Thread Direction:
Right-hand
Thread Class:
3a
Thread Diameter:
0.250 inches
Surface Treatment Specification:
Class 2 federal specification single treatment response type 2 qq-p-416
Surface Finish:
32.0 microinches grip
Surface Treatment:
Cadmium and chromate
Specification Data:
80205-nas1581 professional/industrial association standard
Surface Finish:
32.0 microinches threads
Internal Drive Style:
Offset cruciform (torque set)
Material:
Stee
Min. Tensile Strength (psi):
160000 pounds per square inch
Head Style:
Flat countersunk
Head Diameter:
Between 0.350 inches and 0.399 inches
Hardness Rating:
36.0 rockwell c and 40.0 rockwell c
Grip Length:
Between 0.240 inches and 0.260 inches
Grip Diameter:
Between 0.2485 inches and 0.2495 inches
Countersink Angle:
100.0 degrees
Fastener Length:
Between 0.638 inches and 0.668 inches
Quick Specs
Thread Size 1/4
Thread Qty 28
Thread Series UNJF
Thread Class 3A

Additional Information

SKU / Model: NAS1581A4T4
NSN: 5305-01-057-3070
FSC: Screws / 5305
Product Series: NAS1581A
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 10
Schedule B: 7318.15.8085
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
NAS1581A4T4_Military-Fasteners-com.pdf
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More NAS1581A close tolerance screws

NAS1581A4T5

Fastener Length: 23/32in., Thread: 1/4-28, Thread Length: 3/8in. screw

NAS1581A3T8

5305-01-477-2865 Close Tolerance Screw

Product Image Gallery

Product code NAS1581A4T4
NAS1581A4T4
NAS1581A4T4
NAS1581A4T4
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NAS1581A4T4

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