Hi,
The Big End Bolts (the ones that hold the con rods together and keep the shells in place) seem to be hard to come by, for the KH.
Am I missing a trick; is there a substitute that someone knows of?
BR,
Keith
KH Big End bolts
- Keith.owen
- Holder of a Golden Anorak

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KH Big End bolts
Keith Owen
Past Editor - Cheval de Fer
1950 Rigid Ariel VH
1951 Rigid Ariel NH
1973 Norton 850 Commando Interstate
1952 Plunger KH
Past Editor - Cheval de Fer
1950 Rigid Ariel VH
1951 Rigid Ariel NH
1973 Norton 850 Commando Interstate
1952 Plunger KH
- Roger Gwynn
- Holder of a Golden Anorak

- Posts: 1955
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Re: KH Big End bolts
Are yours missing or damaged because if you are just wanting replace them as a matter of course, I wouldn't bother unless the old ones are showing damage. They are not prone to failure.
Roger Gwynn, Membership Secretary, curator of the Machine Register and the works drawings. Director of Draganfly Motorcycles, Craven Equipment and Supreme Motorcycles mostly retired.
- Keith.owen
- Holder of a Golden Anorak

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Re: KH Big End bolts
Hi Roger,
I have the conrods, but, am missing the bolts.
I have the conrods, but, am missing the bolts.
Keith Owen
Past Editor - Cheval de Fer
1950 Rigid Ariel VH
1951 Rigid Ariel NH
1973 Norton 850 Commando Interstate
1952 Plunger KH
Past Editor - Cheval de Fer
1950 Rigid Ariel VH
1951 Rigid Ariel NH
1973 Norton 850 Commando Interstate
1952 Plunger KH
- Bernie Blundell
- Posts: 78
- Joined: Mon Jun 19, 2023 2:06 pm
- Contact:
Re: KH Big End bolts
Bolt part number K138-48 same part number used in square 4 (1937 - 58)
Nut part number SN3 also used in SOME square fours
Washer part number 10418-54 (so spanner will fit)
Taken from Draganfly list 15
Nut part number SN3 also used in SOME square fours
Washer part number 10418-54 (so spanner will fit)
Taken from Draganfly list 15
- Keith.owen
- Holder of a Golden Anorak

- Posts: 1232
- Joined: Tue May 03, 2011 2:01 pm
- Location: Bramley, Hamsphire
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Re: KH Big End bolts
Hi Problem is that they are only available on back order and it is very uncertain as to when they might become available; trouble is as one advances in years the question becomes 'will I still be around/able to ride, by then'?
Keith Owen
Past Editor - Cheval de Fer
1950 Rigid Ariel VH
1951 Rigid Ariel NH
1973 Norton 850 Commando Interstate
1952 Plunger KH
Past Editor - Cheval de Fer
1950 Rigid Ariel VH
1951 Rigid Ariel NH
1973 Norton 850 Commando Interstate
1952 Plunger KH
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