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Crowned Hex Head Machine Bolt NAS428-4A7

Description:

Length: 7/8", thread: 1/4-28, crowned hex head machine bolt, cadmium plated steel

NAS428-4A7 Details

National Stock Number (NSN) 5306-01-527-9849
Alternate Part Number N/A
Federal Supply Class (FSC) 5306
Unit of Measure (UOM) 1 /Ea.
Thread Class 3a
Thread Direction Right-hand
Thread Length Between 0.563 inches and 0.594 inches
Fastener Length 0.875 inches
Head Style Crowned hexagon
Head Height 0.141 inches
Width Between Flats 0.438 inches
End Application E fwd fuslag
Thread Diameter 0.250 inches
Grip Length Between 0.031 inches and 0.062 inches
Thready Qty Per Inch (tpi) 28
Min. Tensile Strength (psi) 125000 pounds per square inch
Hardness Rating 26.0 rockwell c and 32.0 rockwell c
Part Name Assigned By Controlling Agency Bolt, machine, 125, 000 psi-crowned hexagon head, adjusting
Material Steel comp 4037
Material Specification Mil-b-6812 military specification all material responses
Surface Treatment Cadmium and chromate
Surface Treatment Specification Qq-p-416, type 2.Qq-p-416, type 2class 3 federal specification all treatment responses
Thread Series Designator Unf

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