NAS517-4-21

Machine Screw

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Description:

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

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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

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NAS517-4-21 Datasheet Features and Specification

Thread Qty Per Inch (tpi):

Thread Direction:

Right-hand

Thread Length:

Between 0.368 inches and 0.514 inches

Thread Class:

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

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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"

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Product code NAS517-4-21

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