NAS1634-21

Screw

email this to someone  
Description:

Fastener Length: 1-41/64", Thread: 1/4-28, Thread Length: 21/64"

* 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

NAS1634-21 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.291 inches minimum and 0.341 inches maximum
Fastener Length:
1.613 inches minimum and 1.643 inches maximum
Head Style:
Pan
Head Diameter:
0.473 inches minimum and 0.492 inches maximum
Head Height:
0.162 inches minimum and 0.175 inches maximum
Internal Drive Style:
Torque set
Thread Diameter:
0.250 inches
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
160000 pounds per square inch
Hardness Rating:
36.0 rockwell c minimum and 40.0 rockwell c maximum
Screw Material:
Steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740
Screw Material Specification:
Mil-s-5626 mil spec 1st material response or mil-s-5000 mil spec 2nd material response or mil-s-8503 mil spec 3rd material response or mil-s-6098 mil spec 4th material response or mil-s-6049 mil spec 5th material response
Screw Surface Treatment:
Cadmium and chromate
Screw Surface Treatment Specification:
Qq-p-416,ty 2,cl 2 fed spec single treatment response
Thread Series Designator:
Unjf
Specification Data:
80205-nas16343 professional/industrial association standard
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Steel
Length 1-41/64

Additional Information

SKU / Model: NAS163421
NSN: 5305-00-102-3139
FSC: Screws / 5305
Product Series: NAS1634
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 5 EA
Schedule B: 7318.15.6080
ECCN: 9A991
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
NAS1634-21_Military-Fasteners-com.pdf
Worldwide Shipping

* report an issue on this page

More NAS1634 machine screws

NAS1634-8

Fastener Length: 53/64", Thread: 1/4-28, Thread Length: 21/64"

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

I love your website. Can hardly believe how fast & accurate the orders come. Am building a kit plane, need a lot of small hardware and electrical the past few months. There has not been a mistake in the last dozen orders.

4.0

My many experiences with Military Fasteners have been very good.

4.0

Paige is the best :)

5.0

Trisha Hawkins is the best! Very helpful!

5.0