DIFF Subgroup
F16B 25/10 Screws performing an additional function to thread-forming, e.g. drill screws
Introduced: January 1985
Full Title
Full titles differ between systems:
IPC:
Screws that form threads in the body into which they are screwed, e.g. wood screws, self-tapping screws > Screws performing an additional function to thread-forming, e.g. drill screws
CPC:
Screws that cut thread in the body into which they are screwed, e.g. wood screws > Screws performing an additional function to thread-forming, e.g. drill screws
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Child Classifications
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