A hardened cylindrical fastener with multiple spiral flutes on its shank. It also has an end smaller in diameter than the outside diameter of the spiral flutes, which acts as a pilot when driven into a drilled hole.
NSN 6610-00-862-5901
NSN 5960-01-295-8924
NSN 4140-00-269-5795
NSN 5950-00-929-4057
NSN 5990-01-311-2348
NSN 5985-00-244-1916
NSN 5935-01-077-5176
NSN 5895-01-170-4355
NSN 6130-00-150-7294
NSN 5935-01-170-4158
NSN 7035-01-551-9668
NSN 5999-01-519-4971