Internal drive ribbed
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.
Classification: Other wrought titanium, nesoi
NSN 4140-00-470-0530
NSN 5855-00-149-0766
NSN 6150-01-388-4398
NSN 5935-01-292-3404
NSN 5925-00-153-4518
NSN 6110-01-272-6026
NSN 6240-00-231-0761
NSN 7035-01-383-6549
NSN 7035-00-803-3056
NSN 6135-01-324-7718
NSN 6145-01-495-0942
NSN 6320-00-646-3311