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NAS428-5A7

Bolt

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Description

Fastener Length: 7/8", Thread: 1/4-24, Thread Length: 27/32"

Specifications

Fastener Length 0.875
Features Provided Finished head
Grip Length 0.031 inches minimum and 0.062 inches maximum
Hardness Rating 26.0 rockwell c minimum and 32.0 rockwell c maximum
Head Height 0.172
Head Style Crowned hexagon
Length 7/8
Material Steel
Material Specification Mil-b-6812 mil spec all material responses
Min. Tensile Strength (psi) 125000 pounds per square inch
Surface Treatment Cadmium
Surface Treatment Specification Qq-p-416, ty 2 cl 2 fed spec single treatment response
Thread Class 3a
Thread Diameter 0.312
Thread Direction Right-hand
Thread Length 0.813 inches minimum and 0.844 inches maximum
Thread Qty 24
Thread Qty Per Inch (tpi) 24
Thread Series Designator UNJF
Thread Size 1/4
Width Between Flats 0.500

Other sizes

Parts that share this base number, ordered by size. Always verify the full specification before substituting.

Cross-reference

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Catalog data updated 2026-07-05. Report a data error