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MS9556-41

Military Standard Bolt

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Description

Bolt part number MS9556-41

Specifications

Extended Washer Diameter 0.375
Extended Washer Thickness 0.040 inches minimum
Fastener Length 3.615 inches minimum and 3.635 inches maximum
Features Provided Finished head
Hardness Rating 24.0 rockwell c minimum and 35.0 rockwell c maximum
Head Height 0.260
Head Style Double hexagon w/hole
Material Iron
Material Specification Ams 5731 assn std single material response
Min. Tensile Strength (psi) 130000 pounds per square inch
Minimum Yield Strength 85000 pounds per square inch
Surface Finish 32.0 microinches bearing surface of head, 32.0 microinches grip, 32.0 microinches threads
Thread Class 3a
Thread Diameter 0.190
Thread Direction Right-hand
Thread Length 0.620 inches minimum and 0.700 inches maximum
Thread Qty Per Inch (tpi) 32
Thread Series Designator UNJF
Width Between Flats 0.250

Cross-reference

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