NAS517-4-20

Machine Screw

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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 500 ships same day if ordered before 4pm EST
NAS517-4-20 Price:
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$1.11 Each
Quantity:
Pre-packaged bag qty: 50 ea
* Sold in increments of 50
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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
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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 NAS517-4-20
NAS517-4-20
NAS517-4-20
NAS517-4-20
NAS517-4-20
NAS517-4-20
NAS517-4-20

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Great value for your dollar. Delivery was even quicker than what was quoted. I recommend this company for all of your industrial fastener needs

5.0

Even though we weren't a customer yet, Paige was very fast to reply and attentive to our requests. Thanks for the great service!

5.0

I have been dealing with you folks for years as a corporation customer and personally. You are the industry standard on quality of product and service.

5.0

Very pleased with the customer service I get when I call. My Cessna 182 is always needing a little bit of extra LOVE from Military Fasteners. When I call to order parts, your training and customer service of your order takers are the tops.. They understand what I'm looking for and can help me figure out how to order it. I've upgraded my old normal headsets to your reconditioned Bose X General Aviation Noise Cancelling. These are my first Noise Cancelling headsets and we are very pleased...I've come back and purchased 2 more...You are a very professional group! With your shipping location in Atlanta, sometimes, I get things in 1 day or 2 at the most. Thanks.

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