NAS1581F8T11

Bolt

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Description:

Fastener Length: 1-15/32", Thread: 1/2-20, Thread Length: 49/64"

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NAS1581F8T11 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.763 inches minimum and 0.773 inches maximum
Fastener Length:
1.441 inches minimum and 1.471 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.6901 inches minimum and 0.7611 inches maximum
Grip Diameter:
0.4985 inches minimum and 0.4995 inches maximum
Internal Drive Style:
Offset cruciform (torque set)
Thread Diameter:
0.500 inches
Grip Length:
0.678 inches minimum and 0.698 inches maximum
Thready Qty Per Inch (tpi):
20
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
Part Name Assigned By Controlling Agency:
Bolt, shear, 100 degree flush reduced head, offset cruciform, 95 ksi fsu
Material:
Steel comp e4340 overall or steel comp 4140 overall or steel comp 8740 overall or steel comp 8735 overall or steel comp 6150 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 1/2
Thread Qty 20
Material Steel
Length 1-15/32

Additional Information

SKU / Model: NAS1581F8T11
NSN: 5305-01-585-4560
FSC: Screws / 5305
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 5 EA
Schedule B: 7318.15.8085
ECCN: 9A991
Download PDF Version
NAS1581F8T11_Military-Fasteners-com.pdf
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NAS1581F6T6

Fastener Length: 63/64", Thread: 3/8-24, Thread Length: 39/64"

NAS1581F6T16

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Products are military grade MIL-SPEC as advertised. I was able to locate #10 locking counter-sunk nutplates when ALL other locations, including Aircraft-Spruce, could not supply.

5.0

I can say that Military Fasteners was able to deliver the part to me very quickly. I live in a very remote area in the Tennessee mountains and typically have to wait up to two weeks to receive deliveries. Sometimes, the delivery guys cannot find my house at all, and they have to leave my packages at the local general store. But with Military Fasteners, my packages always find my front door step and in great condition. This package arrived nearly a week earlier than expected, and that was over the New Years holiday! Great work, Military Fasteners, on your delivery service. Thanks!

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