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AN174-31A Close Tolerance Bolt

Product Series: AN
ECCN: EAR99
Schedule: 7318.15.8085

Unit of Measure: EA

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Head Style

Undercut hexagon

Material

Steel comp 8740 or steel comp 8630 or steel comp 8735 or steel comp 4140 or steel comp 4130 or steel comp 4037

Surface Treatment

Cl 3 federal specification all treatment responses type 2 qq-p-416

Thread Class

Fastener Length: 3.156 inches
Grip Diameter: Between 0.2487 inches and 0.2492 inches
Grip Length: 2.688 inches
Hardness Rating: 26.0 rockwell c and 32.0 rockwell c
Head Height: Between 0.140 inches and 0.172 inches
Min. Tensile Strength (psi): 125000 pounds per square inch
Surface Finish: 63.0 microinches grip
Thread Diameter: 0.250 inches
Thread Direction: Right-hand
Thread Length: 0.468 inches
Thread Qty Per Inch (tpi): 28
Thread Series Designator: Unf (fine thread)
Width Between Flats: Between 0.428 inches and 0.440 inches