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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As usual Military Fasteners did a great job getting the items I ordered to me here in Arizona. My last order had one item on Back Order but was sent in a timely manner direct from the manufacturer. Great Company, great service.

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Fast delivery, excellent choice on product that covers all types of aircraft. This range of product makes it easy to rebuild and maintenance your aircraft.

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Amazingly prompt response! I ordered over 1000 items and couldn't believe it when there was an email waiting the following morning saying the items had been dispatched. Easy to track the package online. By comparison I ordered some items from another supplier 3 months ago and I'm still waiting, with no apologies or communication emanating from them to explain the delay.

5.0

Called Military Fasteners for assistance to determine pricing for some material. Ashleigh S. was very nice to work with. Her attitude and happy approach was great. She provided guidance along with a quote for future reference!! Thank you!

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