NAS517-4-21

Machine Screw

email this to someone  
Description:

Fastener Length: 1-51/64", Thread: 1/4-28, Thread Length: 1/2

* Manufacturer certifications are shipped with your order FREE of charge
NAS517-4-21
NAS517-4-21
NAS517-4-21
NAS517-4-21
NAS517-4-21
NAS517-4-21
Add to Cart Up to qty 2000 ships same day if ordered before 4pm EST
NAS517-4-21 Price:
buy now
$1.85 Each
Quantity:
Pre-packaged bag qty: 25 ea
* Sold in increments of 25
Add item to quote  

NAS517-4-21 Datasheet Features and Specification

Thread Qty Per Inch (tpi):
28
Thread Direction:
Right-hand
Thread Length:
Between 0.368 inches and 0.514 inches
Thread Class:
3a
Thread Diameter:
0.250 inches
Screw Surface Treatment:
Cadmium
Min. Tensile Strength (psi):
160000 pounds per square inch
Screw Material:
Steel comp 8630
Screw Material Specification:
Mil-s-6050 military specification single material response or an-s-9 military standard single material response
Head Style:
Flat countersunk
Internal Drive Style:
Cross recess type 1
Head Diameter:
Between 0.452 inches and 0.510 inches
Hardness Rating:
Between 36.0 rockwell c and 40.0 rockwell c
Fastener Length:
Between 1.766 inches and 1.811 inches
Countersink Angle:
Between 99.0 degrees and 101.0 degrees
Thread Series Designator:
Unf (fine thread)
Quick Specs
Thread Size 1/4
Thread Qty 28
Thread Series UNF
Thread Class 3A
Material Steel

Additional Information

SKU / Model: NAS517421
NSN: 5305-00-637-7908
FSC: Screws / 5305
Product Series: NAS517
Pack Weight (Approx.) 0.626 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
NAS517-4-21_Military-Fasteners-com.pdf
Worldwide Shipping In stock and ready to ship!

* report an issue on this page

More NAS517 machine screws

NAS517-8-6

Fastener Length: 1-9/64", Thread: 1/2-20, Thread Length: 25/32"

NAS517-6-9

$2.10 EA, Fastener Length: 1-13/64in., Thread: 3/8-24, Thread Length: 21/32in.

NAS517-6-6

$3.90 EA, Fastener Length: 63/64in., Thread: 3/8-24, Thread Length: 21/32in.

NAS517-6-5

$1.50 EA, Fastener Length: 61/64in., Thread: 3/8-24, Thread Length: 21/32in.

NAS517-6-28

$44.70 Ea

NAS517-6-27

Fastener Length: 2-21/64", Thread: 3/8-24, Thread Length: 21/32"

Product Image Gallery

Product code NAS517-4-21
NAS517-4-21
NAS517-4-21
NAS517-4-21
NAS517-4-21
NAS517-4-21
NAS517-4-21

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

Happy to find the items needed and the service was very quickly completed.

5.0

Great customer service. Did a quick research for us to find a replacement. Will buy again.

5.0

Trisha Hawkins is extremely helpful and answered every question I had thoroughly. I appreciate her great help in a stressful situation to obtain hardware ASAP.

5.0

Have placed many orders in the past months with sales representative Brittany Cornish and couldn't be more pleased ! She is always a joy to speak with, and she always makes sure that my orders are delivered on time. She's a great asset to your team but I'm sure you already know that.

5.0