M16x18
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.
NSN 6610-01-511-0982
NSN 6150-01-555-7019
NSN 5999-01-371-5284
NSN 5835-00-975-6538
NSN 6650-01-464-5033
NSN 6685-00-031-3383
NSN 5935-01-516-1617
NSN 6105-01-203-1592
NSN 6620-00-491-3818
NSN 5925-01-242-9291
NSN 5985-01-415-1510
NSN 5965-00-185-9687