What size spanner M6
09-21-17 | 08:51 AM
#3
Senior Member
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From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Agreed that most M6 bolts use a 10mm box/open wrench. If the bolt has a hex socket head then the common hex wrench size is 4mm. Andy.
09-21-17 | 10:14 AM
#4
Mostly harmless ™
Joined: Nov 2010
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From: Novi Sad
Bikes: Heavy, with friction shifters
This might help, I've made a table:
Standard thread dimensions used with bicycles - Cycle Gremlin
For most it's a 10 mm wrench. For shifter cable anchors and some brake anchor bolts it's 9 mm wrench.
Standard thread dimensions used with bicycles - Cycle Gremlin
For most it's a 10 mm wrench. For shifter cable anchors and some brake anchor bolts it's 9 mm wrench.
Last edited by Bike Gremlin; 10-14-23 at 04:20 AM.
09-21-17 | 10:35 AM
#5
Facts just confuse people
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From: Mississippi
Bikes: Tarmac Disc Comp Di2 - 2020
09-22-17 | 09:13 AM
#6
Senior Member
Joined: Feb 2012
Posts: 19,359
Likes: 5,492
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
I should have also mentioned that there are brand/product specific fasteners which diverge from otherwise common spec. We see M5 bolts with all sorts of heads as a frequent example. So what wrench your bike's bolt needs is determined by the bolt and not some industry "standard". Andy
