Shank Length On A High Tensile Bolt

[agent_zed]

Hi,

prob a really simple question but i need to buy some high tensile bolts for my shocks but i am not sure how long the shank is on the HT bolts. eg http://www.screwfix.com/p/bzp-ht-hex-bolts-m10x-50-pack-of-50/86820#

Is a 50mm bolt refering to the 50mm of smooth shank or overall length? is there someway of finding out? is there a standard ratio or something?

 

thanks

[Shaft]

The 50mm is from under the head to the end of the bolt.

As a basic rule of thumb, commercial spec bolts have a threaded portion equal to 75% of its length.

 

Edited April 21, 2014 by Shaft

[maca]

I would suggest that you go to a local bolt supplier and ask what bolt lengths they have and pick your bolt length with the plan shank you require even if it means cutting some of the thread off for the final length.

[fry61]

All as above -- plus check the bore diameter of the shock mounting eyes --- you may find they are 1/2" NOT 12mm --- on Florin we used 1/2" UNF x 50mm ? with nylocs --- available from CBS I think.

[Guest mower man]

As said above best route is a fastener supplier , awhile ago I wanted some 14mm allen cap bolts with a very long shank after a bit of searching my supplier found me some14inch long 14mm dia unthreaded cap head bolts which i cut to length and cut threads to length myself , abit extreme but did the job admirably[top wish bone pivots] . mower man

[agent_zed]

thanks for the replies, useful info as always.

 

will have a look and see who are local and likely to have bolts. They are definitely 10mm as i got the chap to fit 10mm bushes to the shocks as far easier than having imperial on some bits and not on others. God knows what was on my old zimmers as they seem to be about 9.5mm so not sure if that is an imperial size.

 

thanks

[Shaft]

9.525mm is 3/8".

[agent_zed]

ha thanks. never got to grips with 16ths and 8ths and the like

[agent_zed]

oh just to be sure anything 8.8 and above (eg 10.9) will do won't it?

[fry61]

ha thanks. never got to grips with 16ths and 8ths and the like

 

Must be a young'un ---- not studied ancient history either

[Nigel Rogers]

Hi,

 

There are loads of spec tables on the net - here's one that might be useful http://www.ebninc.com/technical/metric-fasteners.pdf - If only to help you sleep

 

Cheers

Nige

[agent_zed]

Must be a young'un ---- not studied ancient history either

 

yeah.

 

although i do use feet/inches with metric just to confuse things, depends which measurement is closer!

[sj-bradley]

Link, Perch, Chain and Furlong ...

[fry61]

Link, Perch, Chain and Furlong ...

 

Think you're MILES short Simon

[sj-bradley]

Maybe, maybe KNOT ...

 

I don't want to get nautical, but I'm sure someone can FATHOM this out. I don't want to get SHACKLEd with this thread ...

 

Simon.