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 5975-00-203-1265
NSN 5965-00-562-8933
NSN 5985-01-275-2045
NSN 6685-00-135-0673
NSN 5855-00-916-2236
NSN 6320-01-321-7658
NSN 5965-01-411-9933
NSN 6145-01-412-8565
NSN 5960-01-286-3766
NSN 5999-01-570-4334
NSN 5985-00-450-9565
NSN 5945-01-332-3274