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 Post subject: Front mount head bolts
PostPosted: 10 Mar 2025 15:56 
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Joined: 06 May 2009 17:10
Posts: 2601
Current ride: 99 Cyclone M2
Location: Liverpool
Can anyone remind me of the length and thread size of the two head bolts for the isolator mount

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PostPosted: 10 Mar 2025 22:23 
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Joined: 06 May 2009 17:10
Posts: 2601
Current ride: 99 Cyclone M2
Location: Liverpool
7/16 x 2 3/4 UNC ?

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PostPosted: 11 Mar 2025 08:50 
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Joined: 07 Nov 2011 18:10
Posts: 4238
Current ride: Buell ulysses
Location: Telford
some would say that it is AMC .
others have posted that ANC is the same as UNC
I thought that the thread angle was different but just googled and looks to be the same
google Anc thread angle search

"Summary of Thread Included Angles
Thread data
UNF, UNC, ANF, ANC 60°;
.
BA 47½°;
Metric or ISO 60°;
BSW, BSF, BSP 55°;
Acme 29°;
British Standard Cycle Thread (BSC) = Cycle Engineers’ Institute (CEI) 60°."

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