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

100°, Flush Head Screw NAS517-4-6

Description:

Length: 0.844", grip: 0.375", thread: 1/4-28, shear, close tolerance screw, alloy steel

NAS517-4-6 Details

National Stock Number (NSN) 5305-00-206-0622
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 0.469 inches
Fastener Length 0.844 inches
Head Style Flat countersunk
Head Diameter Between 0.452 inches and 0.510 inches
Internal Drive Style Cross recess type ii
Thread Diameter 0.250 inches
Thready Qty Per Inch (tpi) 28
Min. Tensile Strength (psi) 160000 pounds per square inch
Countersink Angle 100.0 degrees
Screw Material Steel comp 4130 or steel comp 8630 or steel comp 8735 or steel comp 8740
Screw Material Specification Mil-s-6758 military specification 1st material response or mil-s-6050 military specification 2nd material response or mil-s-6098 military specification 3rd material response or mil-s-6049 military specification 4th material response
Screw Surface Treatment Cadmium
Thread Series Designator Unf

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