5 Qty AN5-21A

Thread Class: 3a

Thread Direction: Right-hand

Thread Length: 0.531 inches minimum

Fastener Length: 2.219 inches nominal

Head Style: Hexagon

Head Height: 0.172 inches minimum and 0.204 inches maximum

Width Between Flats: 0.490 inches minimum and 0.502 inches maximum

Thread Diameter: 0.312 inches

Grip Length: 1.688 inches nominal

Features Provided: Finished head

Thready Qty Per Inch (tpi): 24

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

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

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

Material Specification: Mil-b-6812 mil spec all material responses overall

Surface Treatment: Cadmium overall and chromate overall

Surface Treatment Specification: Qq-p-416,ty 2,class 3 fed spec all treatment responses overall

1 Qty An5-41A