Measurement selector
Identify Faucet Parts by Measurements
A repeatable measurement workflow that makes dimensions useful alongside markings, geometry, and documented applications.
Direct answer
Choose the part type, use the selector's illustrated endpoints, enter units exactly, and report uncertainty. Dimensions can exclude mismatches and rank candidates, but they must be confirmed with geometry and application evidence.
Guided lookup
Narrow the part before you buy it
Enter any number or marking you have, then add the fixture details you can confirm. Leave unknown fields blank; the result list explains which record to check next.
Shortlist
Start with a number, brand, or fixture clue
No defensible match from those clues
Do not substitute the nearest-looking part. Recheck the brand mark, count the handles, photograph every side of the removed part, and record its overall length and body diameter.
Fit facts
What identifies this match
Use these details together. One matching feature does not establish compatibility.
- Preferred small-part tool
- Calipers
- Always record
- Units and measurement endpoints
- Do not combine
- Nominal and measured dimensions without context
- Dimension role
- Filter and comparison evidence
- Final check
- Geometry plus documented application
Select the correct measurement set
The selector requests different dimensions for cartridges, stems, aerators, hoses, and handles. Choose the component first so a diameter or length is not compared with an unrelated feature.
Use repeatable endpoints
Place the tool on the same shoulders, faces, or tips shown in the candidate diagram. State whether seals, adapters, screws, and moving stems are included in the reading.
- Overall length
- Rigid body length
- Maximum body diameter
- Connection or broach diameter
Choose a suitable instrument
A ruler is useful for scale and broad lengths; calipers are better for close diameters and shoulders. A thread-pitch gauge is appropriate for pitch. Do not infer precision beyond the instrument or the condition of a worn part.
Enter and convert values carefully
Keep the original reading and unit. If conversion is needed, use 25.4 millimeters per inch and avoid rounding until comparison is complete. Fractions shown in retail descriptions may be nominal rather than exact measured sizes.
Understand tolerance and wear
Deposits can enlarge a surface and abrasion can reduce it. Flexible seals compress. A small numerical difference is therefore interpreted with the measurement method, uncertainty, and feature type—not automatically accepted or rejected.
Combine dimensions with other evidence
After the dimensional shortlist, compare markings, retainer, ports, tabs, threads, seals, and source-backed applications. Stop when a critical feature conflicts even if the headline dimensions match.
Questions
Before you remove or replace the part
Should I use inches or millimeters?
Use whichever your instrument reads clearly, preserve that original value, and let the comparison show a conversion when needed.
How close is close enough?
There is no single tolerance for every feature. Consider instrument accuracy, wear, deposits, and the candidate's documented dimension and function.
Can measurements prove compatibility?
They can strongly narrow or exclude candidates, but application, ports, retention, seals, and operation must also agree.