Thread Size?
03-21-24, 06:53 AM
#1
Senior Member
Thread Starter
Join Date: Dec 2011
Location: NE Ohio
Posts: 2,595
Bikes: 1992 Serotta Colorado II,Co-Motion Speedster, Giant Escape Hybrid, 1977 Schwinn Super Le Tour
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 455 Post(s)
Likes: 0
Liked 112 Times
in
85 Posts
Thread Size?
Just want to confirm a thread size.
on a cartridge BB what is the thread size for the crank set retaining bolt?
Thanks
on a cartridge BB what is the thread size for the crank set retaining bolt?
Thanks
03-21-24, 07:40 AM
#2
I'm good to go!
Join Date: Jul 2017
Location: Mississippi
Posts: 14,992
Bikes: Tarmac Disc Comp Di2 - 2020
Mentioned: 51 Post(s)
Tagged: 0 Thread(s)
Quoted: 6196 Post(s)
Liked 4,811 Times
in
3,319 Posts
Might be M47x1.0mm or 1.37"x24tpi.
And there are some others besides those depending on what your BB cartridge and BB shell is.
If you tell us what your bb is, then we can tell which one of those it is. Being that it's cartridge I might go with the latter of the first two I gave you. But there still are different threading for them. And if you have a french threaded BB shell, then that's a slight variation too.
And there are some others besides those depending on what your BB cartridge and BB shell is.
If you tell us what your bb is, then we can tell which one of those it is. Being that it's cartridge I might go with the latter of the first two I gave you. But there still are different threading for them. And if you have a french threaded BB shell, then that's a slight variation too.
Last edited by Iride01; 03-21-24 at 07:43 AM.
03-21-24, 07:45 AM
#3
Senior Member
Join Date: Feb 2012
Location: Golden, CO and Tucson, AZ
Posts: 2,837
Bikes: 2012 Specialized Elite Disc, 1983 Trek 520
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 676 Post(s)
Liked 741 Times
in
430 Posts
I think the question is about the crank bolt, but yes, we still need to know what BB it is. Most common is the M8 x 1.
Likes For andrewclaus:
03-21-24, 07:50 AM
#4
I'm good to go!
Join Date: Jul 2017
Location: Mississippi
Posts: 14,992
Bikes: Tarmac Disc Comp Di2 - 2020
Mentioned: 51 Post(s)
Tagged: 0 Thread(s)
Quoted: 6196 Post(s)
Liked 4,811 Times
in
3,319 Posts
Likes For Iride01:
03-21-24, 07:52 AM
#5
LR÷P=HR
Join Date: Sep 2019
Location: SF Bay Area
Posts: 2,180
Bikes: 1981 Holdsworth Special, 1993 C-dale MT3000 & 1996 F700CAD3, 2018 Cervelo R3 & 2022 R5, JustGo Runt, Ridley Oval, Kickr Bike 8-)
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 867 Post(s)
Liked 1,205 Times
in
694 Posts
Likes For Barry2:
03-21-24, 08:18 AM
#6
Senior Member
Join Date: Jan 2009
Location: San Diego, CA
Posts: 3,674
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 839 Post(s)
Liked 1,062 Times
in
746 Posts
+2 For needing the make & model of the crankset. A photo would help if the model is unknown. There are a few variations of type of bolt needed such as an Octalink, or Square Taper BB and other differences.
Likes For Crankycrank:
03-21-24, 10:06 AM
#7
SE Wis
Join Date: Apr 2005
Location: Milwaukee, WI
Posts: 10,516
Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400, 2013 Novara Randonee, 1990 Trek 970
Mentioned: 40 Post(s)
Tagged: 0 Thread(s)
Quoted: 2747 Post(s)
Liked 3,401 Times
in
2,058 Posts
Most are M8 x 1.0 for common square taper
03-21-24, 10:25 AM
#8
Senior Member
Thread Starter
Join Date: Dec 2011
Location: NE Ohio
Posts: 2,595
Bikes: 1992 Serotta Colorado II,Co-Motion Speedster, Giant Escape Hybrid, 1977 Schwinn Super Le Tour
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 455 Post(s)
Likes: 0
Liked 112 Times
in
85 Posts
Thanks. It is M8x1
