M46x2.5 Threaded Replacement Cap – 58 mm Ribbed Grip
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Printable M46x2.5 replacement cap with 0.30 mm thread clearance and ribbed grip for easy tightening.
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M46x2.5 Threaded Replacement Cap
A functional replacement cap designed from measurements of a broken original part.
The cap uses a single-start M46x2.5 internal thread with additional clearance optimized for FDM printing. The outside has vertical grip ribs to make tightening and removal easier by hand.
Dimensions
Internal thread: M46 x 2.5
Single-start thread
Outer diameter: 58 mm
Total height: 27 mm
Thread clearance: 0.30 mm
Free entry before thread: 6 mm
Threaded section: approximately 18 mm
Closed top section: approximately 3 mm
Printing
Recommended settings:
Layer height: 0.20 mm
Walls: 4 or more
Infill: 20–30%
Supports: Not required
Material: PETG recommended
PLA should also work for light-duty indoor use. ASA or ABS can be used if more temperature resistance is required.
Print with the closed top against the build plate and the threaded opening facing upward.
Fit
The internal thread includes approximately 0.30 mm of additional clearance to improve fit with typical FDM printers.
Dimensional accuracy varies between printers, so some slicer XY/hole compensation may be required if the thread feels too tight or loose.
This model was created after measuring and testing a broken original cap. A separate thread test was printed first to verify the dimensions before creating the final part.
If you find another application where this M46x2.5 cap fits, feel free to leave a comment!