NAS1581F4T36

Bolt

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Description:

Fastener Length: 2-21/32", Thread: 1/4-28, Thread Length: 3/8"

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NAS1581F4T36 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.403 inches nominal
Fastener Length:
2.638 inches minimum and 2.668 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.3504 inches minimum and 0.3988 inches maximum
Grip Diameter:
0.248 inches nominal
Internal Drive Style:
Offset cruciform (torque set)
Thread Diameter:
0.250 inches
Grip Length:
2.653 inches nominal
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
3200 pounds per square inch
Countersink Angle:
99.0 degrees minimum and 101.0 degrees maximum
Material:
Steel comp 4130 overall or steel comp 4340 overall or steel comp 8740 overall
Material Specification:
Mil-s-5626 mil spec 1st material response overall or mil-s-5000 mil spec 2nd material response overall or mil-s-6047 mil spec 3rd material response overall
Surface Treatment:
Cadmium overall or passivate overall
Surface Treatment Specification:
Qq-p-416, ty 2, cl 2 fed spec 1st treatment response overall or qq-p-35 fed spec 2nd 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 Steel
Length 2-21/32

Additional Information

SKU / Model: NAS1581F4T36
NSN: 5305-01-425-8825
FSC: Screws / 5305
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 1 EA
Schedule B: 7318.15.8085
ECCN: 9A991
Download PDF Version
NAS1581F4T36_Military-Fasteners-com.pdf
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I am really pleased with the customer service I received. Very communicative, and the items are available at decent pricing.

5.0

I have been a customer since Fullerton Air Parts (Flo Irwin). That should speak volumes of the service I have received from Military Fasteners. In the early days, I had a variety of planes and was based out of Orange County Airport. At the time, the airport was surrounded by bean fields. I, and some of my friends, would frequently fly into Fullerton airport for lunch, the pick up whatever supplies we needed from Flo. She was a great lady, and I am glad that she passed on such a wonderful legacy. I am certain that she would be very proud of what she started, and proud of you all for building on her meager beginnings.

4.0

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

Your website was easy to use and checkout was a breeze. My part was shipped right away and I received it quickly. Excellent service all around! Thanks to you all.

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