An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.
Austria 
New Zealand 
Republic of Korea 
Greece NSN 5990-01-604-0862
NSN 5985-00-381-6140
NSN 6240-01-080-9620
NSN 5895-01-158-2247
NSN 6130-01-658-9759
NSN 5975-01-573-5209
NSN 5960-01-533-5162
NSN 5855-01-035-2866
NSN 6135-01-306-6549
NSN 5990-01-449-7090
NSN 6685-01-437-3645
NSN 5925-00-740-9996