NAS517-4-20

Machine Screw

email this to someone  
Description:

Fastener Length: 1-47/64", Thread: 1/4-28, Thread Length: 1/2", NAS517 series screw

* Manufacturer certifications are shipped with your order FREE of charge
NAS517-4-20
NAS517-4-20
NAS517-4-20
NAS517-4-20
NAS517-4-20
NAS517-4-20
Add to Cart Up to qty 450 ships same day if ordered before 4pm EST
NAS517-4-20 Price:
buy now
$1.11 Each
Quantity:
Pre-packaged bag qty: 50 ea
* Sold in increments of 50
Add item to quote  

NAS517-4-20 Datasheet Features and Specification

Thread Direction:
Right-hand
Thread Class:
3a
Thread Diameter:
0.250 inches
Screw Surface Treatment Specification:
Qq-p-416 type 2 cl 3 federal specification single treatment response
Screw Surface Treatment:
Cadmium and chromate
Screw Material Specification:
Mil-s-6050 military specification single material response or an-s-9 military standard single material response
Min. Tensile Strength (psi):
160000 pounds per square inch
Screw Material:
Steel comp 8630
Head Style:
Flat countersunk
Internal Drive Style:
Cross recess type 1
Head Diameter:
Between 0.452 inches and 0.510 inches
Thread Length:
Between 0.368 inches and 0.514 inches
Hardness Rating:
Between 36.0 rockwell c and 40.0 rockwell c
Fastener Length:
Between 1.704 inches and 1.749 inches
Countersink Angle:
Between 99.0 degrees and 101.0 degrees
Thread Qty Per Inch (tpi):
28
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: NAS517420
NSN: 5305-00-637-7939
FSC: Screws / 5305
Product Series: NAS517
Pack Weight (Approx.) 0.205 lb
Minimum Qty (MOQ): 50
Schedule B: 7318.15.6080
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
NAS517-4-20_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

Fastener Length: 1-13/64in., Thread: 3/8-24, Thread Length: 21/32in., 5305-00-207-1791

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 NAS517-4-20
NAS517-4-20
NAS517-4-20
NAS517-4-20
NAS517-4-20
NAS517-4-20
NAS517-4-20

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

Very fast response to RFQ (less than 1 day) very competitive pricing and low MOQ requirements

5.0

Well pleased with the prompt and complete service I have received over the past years with Military Fasteners. Good products, great selection, great service.

5.0

I sent in my online order then within a minute I realized I left off an item. I sent a message that requested an item be added to avoid a second shipping cost. I received a reply the next morning that the item I wanted had been added successfully and my order would be delivered as promised. Thanks to your staff for the flexibility and the help with my online order.

5.0

Best source for mil spec hardware. Website is user friendly, inventory is expansive, overnight shipment is a huge plus, and customer support is responsive and very helpful.

5.0