NAS6306-38D Machine Bolt

Distance From Head Largest Surface To Shank Hole Center

2.231 inches first hole and 2.28 inches first hole

End Application

C-17a aircraft

Fastener Length

2.829 inches

Grip Diameter

Between 0.3735 inches and 0.3745 inches

Grip Length

2.375 inches

Head Height

Between 0.188 inches and 0.203 inches

Material Specification

Ams 5731 assn standard single material response or ams 5737 assn standard single material response

Min. Tensile Strength (psi)

160000 pounds per square inch

Part Name Assigned By Controlling Agency

160 ksi ftu nonlocking reduced major thread dia short thread a 286 cres close tolerance hex head tension bolt

Shank Unthreaded Hole Diameter

0.106 inches first hole and 0.116 inches first hole

Surface Finish

32.0 microinches threads

Thread Diameter

0.375 inches

Thread Direction

Right-hand

Thread Length

Between 0.429 inches and 0.479 inches

Thread Qty Per Inch (tpi)

24

Thread Series Designator

Unjf (fine thread with external controlled root radius)

Width Between Flats

Between 0.554 inches and 0.564 inches