Description:

3a thread class, right-hand , 0.422 inches thread length, 0.484 inches fastener length, flat chamfer head style, 0.218 inches head diameter.

Special Features:

With strip or pellet type element in threads or patch type element on threads for locking feature

Properties:

An externally threaded fastener whose threaded portion is of one nominal diameter, no. 10 (0.190 in.) (5 mm) or larger. It is designed with an internal socket or internal multiple spline for use with an internal driver. The head is beveled (conical) or cylindrical in shape. Items with cylindrical shaped heads must have an externally relieved body. A locking feature may be incorporated in the design of the head or threads. See also screw, cap, socket head. Excludes setscrew; screw, shoulder; bolt, shoulder; screw, externally relieved body; bolt, externally relieved body; and screw, machine.