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MS21250-05032

Military Standard Shear Bolt

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Description

Fastener Length: 2-39/64", Thread: 1/4-24, Thread Length: 39/64

Specifications

Extended Washer Diameter Between 0.521 inches and 0.531 inches
Extended Washer Thickness Between 0.072 inches and 0.092 inches
Fastener Length Between 2.589 inches and 2.609 inches
Grip Diameter Between 0.3110 inches and 0.3120 inches
Grip Length Between 1.990 inches and 2.010 inches
Hardness Rating 39.0 rockwell c and 43.0 rockwell c
Head Height Between 0.338 inches and 0.358 inches
Head Style Double hexagon w/hole
Material Steel
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 or mil-s-8503 military specification 4th material response
Min. Tensile Strength (psi) 180000 pounds per square inch
Surface Finish 32.0 microinches bearing surface of head, 32.0 microinches grip
Surface Treatment Cadmium and chromate
Surface Treatment Specification Qq-p-416 type 2 cl 2 federal specification single treatment response
Thread Class 3a
Thread Diameter 0.312
Thread Direction Right-hand
Thread Length Between 0.579 inches and 0.619 inches
Thread Qty 24
Thread Qty Per Inch (tpi) 24
Thread Series UNJF
Thread Series Designator Unjf (fine thread with external controlled root radius)
Thread Size 1/4
Width Between Flats 0.375

Cross-reference

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