NAS623-4-21

Machine 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
NAS623-4-21
NAS623-4-21
NAS623-4-21
NAS623-4-21
NAS623-4-21
NAS623-4-21
Add to Cart Up to qty 100 ships same day if ordered before 4pm EST
NAS623-4-21 Price:
buy now
$1.94 Each
Quantity:
Pre-packaged bag qty: 25 ea
* Sold in increments of 25
Add item to quote  

NAS623-4-21 Datasheet Features and Specification

Fastener Length:
Between 1.613 inches and 1.643 inches
Hardness Rating:
Between 36.0 rockwell c and 40.0 rockwell c
Head Diameter:
Between 0.473 inches and 0.492 inches
Head Height:
Between 0.162 inches and 0.175 inches
Head Style:
Pan no. 2
Internal Drive Style:
Cross recess type 1
Min. Tensile Strength (psi):
160000 pounds per square inch
Thread Diameter:
0.250 inches
Screw Material:
Steel comp 4140 or steel comp e4340 or steel comp 8740
Screw Material Specification:
Mil-s-5626 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-6049 military specification 3rd material response
Screw Surface Treatment:
Cadmium and chromate
Screw Surface Treatment Specification:
Qq-p-416 type 2 cl 2 federal specification single treatment response
Specification Data:
80205-nas623 professional/industrial association standard
Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
Between 0.291 inches and 0.341 inches
Thread Qty Per Inch (tpi):
28
Thread Series Designator:
Unjf (fine thread with external controlled root radius)
Quick Specs
Thread Size 1/4
Thread Qty 28
Thread Series UNJF
Thread Class 3A
Material Steel

Additional Information

SKU / Model: NAS623421
NSN: 5305-00-878-9472
FSC: Screws / 5305
Product Series: NAS623
Pack Weight (Approx.) 0.698 lb
Minimum Qty (MOQ): 25
Schedule B: 7318.15.6080
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
NAS623-4-21_Military-Fasteners-com.pdf
Worldwide Shipping In stock and ready to ship!

* report an issue on this page

More NAS623 machine screws

NAS623-6-6

Fastener Length: 25/32", Thread: 3/8-24, Thread Length: 13/32"

NAS623-5-9

Fastener Length: 15/16in., Thread: 1/4-24, Thread Length: 25/64in., 5305-00-453-6252

NAS623-5-20

$1.14 EA, Fastener Length: 1-5/8in., Thread: 1/4-24, Thread Length: 25/64in.

NAS623-5-14

$4.74 Ea

NAS623-5-12

5305-00-275-3383 Machine Screw

NAS623-4-9

Machine Screw 5305-00-815-9859 Length: 0.878in., grip: 0.562in., thread: 1/4-28, pan head machine screw short thread philips recess cadmium plated alloy steel

Product Image Gallery

Product code NAS623-4-21
NAS623-4-21
NAS623-4-21
NAS623-4-21
NAS623-4-21
NAS623-4-21
NAS623-4-21

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

Quite efficient and one gets the exact items ordered for...would use their services again

5.0

I order parts about once a week for the restoration of my Grumman AA-1A. Service and prompt delivery are always above expectation. I don't know what I would do without Military Fasteners and that's no joke! Thanks for your great work!

5.0

Happy with my transaction

4.0