Thread Class: 3a

Thread Direction: Right-hand

Thread Length: 0.281 inches minimum

Fastener Length: 3.406 inches nominal

Head Style: Button

Head Diameter: 0.375 inches nominal

Head Height: 0.094 inches nominal

Groove Diameter: 0.136 inches minimum and 0.141 inches maximum

Shank Unthreaded Hole Diameter: 0.070 inches minimum first hole and 0.080 inches maximum first hole

Single Shear Strength: 2125 pounds per square inch

Internal Drive Style: Slot

Thread Diameter: 0.190 inches

Thready Qty Per Inch (tpi): 32

Min. Tensile Strength (psi): 125000 pounds per square inch

Hardness Rating: 26.0 rockwell c minimum overall and 32.0 rockwell c maximum overall

Distance From Head Largest Bearing Surface To Shank Hole Center: 3.234 inches minimum first hole and 3.266 inches maximum first hole

Material: Steel comp 4140 overall or steel comp 8740 overall or steel comp 8630 overall or steel comp 8735 overall or steel comp 4130 overall or steel comp 4037 overall

Material Specification: Mil-s-5626 mil spec 1st material response overall or mil-s-6049 mil spec 2nd material response overall or mil-s-6050 mil spec 3rd material response overall or mil-s-6098

mil spec 4th material response overall or mil-s-6758 mil spec 5th material response overall or ams 6300 assn std 6th material response overall

Surface Treatment: Cadmium overall and chromate overall

Surface Treatment Specification: Qq-p-416 ty 2 cl 3 fed spec single treatment response overall