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 450 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

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

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Youre team did an excellent job as usual. The sheet metal and grommets arrived in excellent condition and were very well priced which I appreciate. Thanks again. Doug

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