US PATENT SUBCLASS 411 / 396
.~ Separate head element

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}
396.~ Separate head element {1}
397  DF  .~.~> Threadedly attached to shank

DEFINITION

Classification: 411/396

Separate head element:

(under subclass 378) Subject matter wherein the fastening means is provided with a transverse projection or head and further wherein the head and the remainder of the fastener means are separately formed and the head is subsequently attached to the remainder of the fastener means.