The Park Tool 647L is the M47 x 1.0 left-hand threaded tap for T47 bottom bracket shells. It is the dedicated replacement for the BTS-1 bottom bracket tapping and facing set and is used on the drive side, that is the right side of the bike.
The T47 standard uses 47 mm threaded cups: when the shell threads are fouled with paint, oxidised or slightly damaged, the tap lets you chase them before installing the bottom bracket, so the cups thread in correctly. Park Tool recommends always working with a cutting fluid such as CF-2.
How to use the Park Tool 647L T47 tap
- Fits the BTS-1 set, paired with the 647R right-hand tap for the opposite side
- Chases the left-hand threads on the drive side of T47 shells
- Prepares the frame before fitting T47 threaded-cup bottom brackets
- Always use with cutting fluid
Why choose the Park Tool 647L
- M47 x 1.0 thread specific to the T47 standard
- Genuine Park Tool replacement part for the BTS-1 set
- Replace only the worn tap without buying the complete set again
For workshops working on T47 frames with the BTS-1, the Park Tool 647L left-hand T47 tap is the replacement part that keeps the set ready for use.
TECHNICAL SPECIFICATIONS
General
- Code: 647L
- Type: bottom bracket shell thread tap
- Side of use: drive side (right)
Dimensions
- Thread: M47 x 1.0 left-hand
Compatibility
- Standard: T47 bottom bracket shells
- Tool: Park Tool BTS-1 bottom bracket tapping and facing set
The Park Tool 647L is the M47 x 1.0 left-hand threaded tap for T47 bottom bracket shells. It is the dedicated replacement for the BTS-1 bottom bracket tapping and facing set and is used on the drive side, that is the right side of the bike.
The T47 standard uses 47 mm threaded cups: when the shell threads are fouled with paint, oxidised or slightly damaged, the tap lets you chase them before installing the bottom bracket, so the cups thread in correctly. Park Tool recommends always working with a cutting fluid such as CF-2.
How to use the Park Tool 647L T47 tap
- Fits the BTS-1 set, paired with the 647R right-hand tap for the opposite side
- Chases the left-hand threads on the drive side of T47 shells
- Prepares the frame before fitting T47 threaded-cup bottom brackets
- Always use with cutting fluid
Why choose the Park Tool 647L
- M47 x 1.0 thread specific to the T47 standard
- Genuine Park Tool replacement part for the BTS-1 set
- Replace only the worn tap without buying the complete set again
For workshops working on T47 frames with the BTS-1, the Park Tool 647L left-hand T47 tap is the replacement part that keeps the set ready for use.
TECHNICAL SPECIFICATIONS
General
- Code: 647L
- Type: bottom bracket shell thread tap
- Side of use: drive side (right)
Dimensions
- Thread: M47 x 1.0 left-hand
Compatibility
- Standard: T47 bottom bracket shells
- Tool: Park Tool BTS-1 bottom bracket tapping and facing set
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