The job
A double-ended manual wrench for cup-and-cone bottom-bracket lockrings, with a fixed-gear exclusion.
Park Tool · Bottom-bracket lockring spanner
Park Tool HCW-5 Bottom Bracket Lockring Spanner
A double-ended manual wrench for cup-and-cone bottom-bracket lockrings, with a fixed-gear exclusion.
$25.95Nov 7, 26, 12:53 AM · New York
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- Purpose Cup-and-cone bottom-bracket lockrings
- Single-hook scope Matching 43–46 mm outer-diameter lockrings
- Three-hook scope Three-notch ring; maximum 46 mm major / 40 mm minor diameter
Purpose
Cup-and-cone bottom-bracket lockrings
Match the lockring geometry
Use diameter, notch number and access together. Three points of contact require the specified three-notch pattern.
What this choice changes
Single-hook and three-hook contacts for matching lockrings
The HCW-5 serves the lockring on a matching cup-and-cone bottom bracket. Its two ends offer different engagement: a single hook for the supported 43–46 mm outer-diameter lockrings, and a three-hook end for the specified three-notch shape. The contact pattern and notch access matter along with the ring’s outside diameter.
For the three-hook end, Park Tool gives a maximum major diameter of 46 mm and a minor diameter of 40 mm. This is not an adjustable-wrench range for every round fastener. The heat-treated, nickel-plated tool addresses the lockring operation; other tools for the bottom-bracket cup and adjustment are separate.
Do not choose it for a fixed-gear rear-wheel lockring simply because the ring has notches. Park Tool specifically distinguishes that job and points to HCW-17 instead. For a traditional bottom-bracket service, identify the lockring and required cup tools together before ordering.
Specifications & supplied details
| Detail | Specification |
|---|---|
| Purpose | Cup-and-cone bottom-bracket lockrings |
| Single-hook scope | Matching 43–46 mm outer-diameter lockrings |
| Three-hook scope | Three-notch ring; maximum 46 mm major / 40 mm minor diameter |
| Construction | Heat-treated, nickel-plated |
| Supplied | One double-ended HCW-5 |
Choose for your actual setup
Match the lockring geometry
Use diameter, notch number and access together. Three points of contact require the specified three-notch pattern.
Separate lockring from cup adjustment
This is the lockring spanner. Confirm the additional cup tool needed for the complete service.
Fit checks & limits
- Not the maker-recommended tool for fixed-gear lockrings.
- The selected offer is labelled Blue while the source photos show a silver-coloured tool; a blue finish is not confirmed.
Questions before you choose
Can I use this on a fixed-gear lockring?
Park Tool explicitly directs that application to HCW-17 instead of HCW-5.
Does the three-hook end fit every 46 mm ring?
No. It also requires the matching three-notch shape and stated minor diameter. The outer diameter alone is insufficient.
Does this replace the bottom-bracket cup wrench?
It addresses the lockring. The cup and adjustment interface may need a separate tool for the same service.
Guides for this choice
Selected listing details, manufacturer information and source images were compared. No hands-on trial or universal fit is claimed. Product identifier: B000C17KRI.