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Worldwide distributor of NSN parts and consumables located in the USA.

100°, Flush Head Screw NAS517-4-8

Description:

Length: 0.969", grip: 0.500", thread: 1/4-28, shear, close tolerance screw, alloy steel

NAS517-4-8 Details

National Stock Number (NSN) 5305-00-207-3738
Alternate Part Number N/A
Federal Supply Class (FSC) 5305
Unit of Measure (UOM) 100 /Ea.
Thread Class 3a
Thread Direction Right-hand
Thread Length Between 0.368 inches and 0.514 inches
Fastener Length Between 0.954 inches and 0.999 inches
Head Style Flat countersunk
Head Diameter Between 0.452 inches and 0.510 inches
Internal Drive Style Cross recess type 1
Thread Diameter 0.250 inches
Thready Qty Per Inch (tpi) 28
Min. Tensile Strength (psi) 160000 pounds per square inch
Hardness Rating Between 36.0 rockwell c and 40.0 rockwell c
Countersink Angle Between 99.0 degrees and 101.0 degrees
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
Screw Surface Treatment Cadmium and chromate
Screw Surface Treatment Specification Qq-p-416 type 2 cl 2 federal specification single treatment response
Thread Series Designator Unf

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