Groove 0.281 in. Wide by 0.218 in. Deep extends full height of head, thread end of bolt has diameter of 1.000 in. By 0.250 in. Lg; two slots 0.199 in. Wide by 0.281 in. Depth on thread end slots 67-1/2 degrees apart
An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercuts for thread relief). It is no. 10 (0.190 in.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, internal wrenching and thumbscrew. See also screw, externally relieved body.
NSN 6130-01-069-9187
NSN 4140-01-469-6140
NSN 5920-01-512-9393
NSN 4140-01-649-0939
NSN 5910-00-408-8584
NSN 6220-01-605-0832
NSN 5990-01-623-0082
NSN
NSN 5915-00-770-8422
NSN 6105-00-571-4391
NSN 5985-00-762-3082
NSN 6240-01-409-1015