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Pan Head Machine Screw NAS623-4-8

Description:

Length: 0.816\", grip: 0.500\", thread: 1/4-28, pan head machine screw, short thread, phillips recess, cadmium plated alloy steel

NAS623-4-8 Details

National Stock Number (NSN) 5305-00-616-8346
Alternate Part Number N/A
Federal Supply Class (FSC) 5305
Unit of Measure (UOM) 25 /Ea.
Thread Class 3a
Thread Direction Right-hand
Thread Length Between 0.291 inches and 0.341 inches
Fastener Length Between 0.801 inches and 0.831 inches
Head Style Pan
Head Diameter Between 0.473 inches and 0.492 inches
Head Height Between 0.162 inches and 0.175 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
Screw Material Steel comp 4140 or steel comp e4340 or steel comp 8740
Screw Material Specification Mil-s-5626 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-6049 military specification 3rd material response
Screw Surface Treatment Specification Qq-p-416 type 2 cl 2 federal specification single treatment response
Thread Series Designator Unjf
Specification Data 80205-nas623 professional/industrial association standard

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