US PATENT SUBCLASS 411 / 393
.~ Set screw

Current as of: June, 1999
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411 /   HD   EXPANDED, THREADED, DRIVEN, HEADED, TOOL-DEFORMED, OR LOCKED-THREADED FASTENER

378  DF  EXTERNALLY THREADED FASTENER ELEMENT, E.G., BOLT, SCREW, ETC. {16}
393.~ Set screw

DEFINITION

Classification: 411/393

Set screw:

(under subclass 378) Subject matter wherein the fastening means is provided with a thread throughout its length and with a cavity in one end adapted to receive a driving tool.