NAS1581F4H4

Bolt

email this to someone  
Description:

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

* Manufacturer certifications are shipped with your order FREE of charge
no image available
Add to Quote We are currently out of stock of this item. Click the button below to add this item to a quote and receive up to date pricing and availability by email.

Add to Quote

NAS1581F4H4 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.378 inches minimum and 0.428 inches maximum
Fastener Length:
0.638 inches minimum and 0.668 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.3504 inches minimum and 0.3988 inches maximum
Grip Diameter:
0.2485 inches minimum and 0.2495 inches maximum
Internal Drive Style:
High-torque
Thread Diameter:
0.250 inches
Grip Length:
0.240 inches minimum and 0.260 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
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 type 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 Steel
Length 21/32

Additional Information

SKU / Model: NAS1581F4H4
NSN: 5305-01-097-7919
FSC: Screws / 5305
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 15 EA
Schedule B: 7318.15.8085
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
NAS1581F4H4_Military-Fasteners-com.pdf
Worldwide Shipping

* report an issue on this page

More close tolerance bolts

NAS1581F8T13

Fastener Length: 1-19/32", Thread: 1/2-20, Thread Length: 49/64"

NAS1581F8T11

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

NAS1581F6T9

Fastener Length: 1-1/8", Thread: 3/8-24, Thread Length: 19/32"

NAS1581F6T8

Fastener Length: 1-7/64", Thread: 3/8-24, Thread Length: 39/64"

NAS1581F6T6

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

NAS1581F6T16

Fastener Length: 1-39/64", Thread: 3/8-24, Thread Length: 19/32"

Have a question

If you require a quote on this or any product please visit our quote request page »

Browse our frequently asked questions page.

You may contact us by phone at +1 (904) 543-6395 or email us using our contact form.

Our hours of operation are 8:00am - 6:00pm EST

Customer Reviews

Google View our Google profile

Devin provided quick and efficient shipping!

5.0

Amazingly prompt response! I ordered over 1000 items and couldn't believe it when there was an email waiting the following morning saying the items had been dispatched. Easy to track the package online. By comparison I ordered some items from another supplier 3 months ago and I'm still waiting, with no apologies or communication emanating from them to explain the delay.

5.0

As always, my order was filled accurately and arrived quickly. The one item not in stock in California arrived two days later from another store. Over the years, whether a large order or just a few items,I have received the same quick service. My suggestion? Continue the excellent customer service.

4.0

Amelia Fato, excellent customer service. Able to provide quick response on requested quotes.

5.0