Undercut head
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: Bolts and bolts and their nuts or washers exported in the same shipment
NSN 5835-00-863-0959
NSN 7035-01-395-0757
NSN 5960-01-312-1262
NSN 6320-01-582-6668
NSN 5960-01-570-8605
NSN 6240-00-280-8502
NSN 6150-00-923-6647
NSN 5925-00-355-6124
NSN 5915-01-601-6163
NSN 6645-01-182-4896
NSN 5920-01-288-0145
NSN 5996-00-467-4196