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CRB door-knob butt cap CRBC-30 (size 30 mm)
What are the dimensions of the CRB door-knob butt cap CRBC-30 (size 30 mm)? · Modern device · basis: Secondary source: Mud Hole Custom Tackle (CRB) (copy of the maker's figures; the maker publishes none directly)
Also called: crb crbc-30, 30mm butt cap, door knob butt cap, fishing rod butt cap size, rod butt cap 30 mm inside diameter, crb butt cap size chart, tapón de culata caña de pesca, endkappe angelrute, ponteira vara de pesca
Exact dimensions. True size, with no printing tolerance added.
- length
- 41.91 mm
- width
- 41.91 mm
- height
- 54.61 mm
Notes
- CRB's door-knob butt cap fits over a grip or butt of about 30 mm; Mud Hole publishes ID, OD and length.
- The rounded knob profile and bore depth are not published, so only an envelope with the bore diameter can be built.
- Retailer/brand-owner Mud Hole is the only source (secondary).
- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.
- Secondary source: the numbers come from a retailer or magazine copy of the maker's specification.
CRB door-knob butt cap CRBC-30 size chart
| dimension | value |
|---|---|
| Nominal size | 30 mm |
| Inside diameter | 29.97 mm (1.18 in) |
| Outside diameter | 41.91 mm (1.65 in) |
| Length | 54.61 mm (2.15 in) |
| Bore depth | not published |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Mud Hole Custom Tackle (CRB) | CRB Door Knob Style Butt Caps - size chart | web | Publisher's page; dimensions are facts |
Free files
★ Free files 1 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| crb-door-knob-butt-cap-crbc-30-envelope | Envelope Ø41.91 × 54.61 mm (bore depth and profile not published, not modelled) | STEP · STL |
https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.Plain text: sheet.txt · JSON: /api/geometry?object=crb-door-knob-butt-cap-crbc-30

Fits with
Questions
What fits a CRBC-30 butt cap?
A butt or grip up to 29.97 mm (1.18 in) diameter.



