Washers or equivalent devices; Other devices for supporting bolt-heads or nuts (circlips F16B21/18; )

Introduced: September 1968

Title

Titles differ between systems:

IPC: Washers or equivalent devices; Other devices for supporting bolt-heads or nuts

CPC: Washers or equivalent devices; Other devices for supporting bolt-heads or nuts (circlips F16B21/18; )

Full titles differ between systems:

IPC:

Washers or equivalent devices; Other devices for supporting bolt-heads or nuts

CPC:

Washers or equivalent devices; Other devices for supporting bolt-heads or nuts (circlips F16B21/18; )

CPC subdivides this area 8x more granularly than IPC with 7 additional codes.

7 codes are CPC-only extensions.

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F16B 2043/008 2nd only CPC only CPC only
F16B 43/001 CPC only CPC only
F16B 43/002 CPC only CPC only
F16B 43/003 CPC only CPC only
F16B 43/004 CPC only CPC only
F16B 43/005 +2 CPC CPC only CPC only
F16B 43/009 CPC only CPC only
F16B 43/02 with special provisions for engaging surfaces which are not perpendicular to a bolt axis or do not surround the bolt +1 CPC IPC+CPC Available in IPC and CPC