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AN3C24

Aeronautical Standard Machine Bolt

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Description

Machine Bolt

Specifications

Distance From Head Largest Bearing Surface To Shank Hole Center 2.375 inches minimum first hole and 2.406 inches maximum first hole
Fastener Length 2.516 inches minimum and 2.562 inches maximum
Features Provided Finished head
Grip Length 2.109 inches minimum and 2.141 inches maximum
Hardness Rating 26.0 rockwell c minimum and 32.0 rockwell c maximum
Head Height 0.109 inches minimum and 0.141 inches maximum
Head Style Hexagon Head
Material Steel
Material Specification Mil-s-18732 mil spec single material response
Min. Tensile Strength (psi) 125000 pounds per square inch
Shank Unthreaded Hole Diameter 0.070 inches minimum first hole and 0.080 inches maximum first hole
Surface Treatment Passivate
Thread Class 3a
Thread Diameter 0.190
Thread Direction Right-hand
Thread Length 0.375 inches minimum and 0.453 inches maximum
Thread Qty Per Inch (tpi) 32
Thread Series Designator UNF
Width Between Flats 0.365 inches minimum and 0.377 inches maximum

Cross-reference

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