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Old 06-05-2005, 08:33 AM   #1
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Transom Bolts.......

Could someone please advise me where I can buy 12mm (standard mercury fit) stainless transom bolts, washers and nuts from?

Dont think the cable ties will hold.......

Cheers

Grant
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Old 06-05-2005, 09:00 AM   #2
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12 mm isn't really the correct size, you should be using a fine thread 1/2" (unf) You can buy them from your local merc dealer but you'd have to sell the boat to fund them, so you could try your local fastener shop!

Failing that, and considering the size of your motor, you'd get away with 12mm but you really do need to use fine not coarse!
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Old 06-05-2005, 09:05 AM   #3
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Namrick www.namrick.co.uk stock a vast range of fastners of just about every weird and wonderful sort, so might be worth a try. They don't have any problem with small orders either.
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Old 06-05-2005, 09:18 AM   #4
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Highly Rate Allscrews
they used to be in Chiswick but moved out west, used to be the best place stocked the fekin lot
Allscrews Ltd
58 High Street
Slough
Berkshire
SL1 1EL
Phone: 01753 578111
Fax: 01753 577740

http://www.allscrews.co.uk/
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Old 06-05-2005, 09:31 AM   #5
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Hi you could try

www.a2a4.co.uk

regards john
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Old 06-05-2005, 10:32 AM   #6
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anyone ever price titanium bolts, had two new yam bolts shear on me last year lucky the engine didn't disappear
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Old 06-05-2005, 01:26 PM   #7
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Just out of interest why should you UNF over UNC?
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Old 06-05-2005, 01:38 PM   #8
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Cheers guys,

think i've got them sorted now.

Grant
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Old 06-05-2005, 02:36 PM   #9
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Quote:
Originally posted by Johnny Boat Dude
Just out of interest why should you UNF over UNC?
A fine thread enables you to tighten them a bit better and grip better - I think!

Rang some of the above - you can forget metric fine or UNF - unless someone knows better?
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Old 06-05-2005, 02:41 PM   #10
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Quote:
Originally posted by Johnny Boat Dude
Just out of interest why should you UNF over UNC?
You can't do a unc up tight, due to the threads being so coarse.

One rev on a unc is equal to about 2 on an unf!
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Old 06-05-2005, 02:43 PM   #11
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I've bought over size bolts in the past and had a unf thread machined onto them. Used to use Steve Salmon, so they'd be ready on Thursday!!!!

I've got loads of plain unf nuts in stock, but no nylocks or bolts!
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Old 06-05-2005, 02:49 PM   #12
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4 x quicksilver genuine bolts with brass nuts cost me £72

i got fecked off with looking for an alternative
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Old 06-05-2005, 02:50 PM   #13
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How about 12x1.25, very similar in size/pitch to 1/2" UNF
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Old 06-05-2005, 02:53 PM   #14
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Quite correct on the fine Vs course thread argument, also a fine thread with resist vibration better in terms of slacking off.
The difference is in the thread angles & tPI threds per inch / MM depending.
There is only a slight difference between UNF & UNC to BSF & BSC threads think it's about 2 degrees from memory will check later. So under the old imperial system here you could get away with combining US & UK nuts & bolts, They just felt a little tight but ran on fine.
Same goes for US NPT again only mimimium bifference to the old imperial pipe thread & can use both / either., Tapers as well

Metric has quite a big difference look up the exact later & post.Powerboaters should never have accepted the metric system.

Edit: BA & Whitworth dont come into it there just feken Odd
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Old 06-05-2005, 02:54 PM   #15
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Quote:
Originally posted by Captain Chaos
4 x quicksilver genuine bolts with brass nuts cost me £72

i got fecked off with looking for an alternative
Should have posted here nobba
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Old 06-05-2005, 02:56 PM   #16
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Had this problem with mine.

Answer is:

Go to local fastner shop and buy a length of S/S 1/2" UNF threaded bar and some nuts
cut bar to length and weld nut on 1 end and hay presto you have a bolt

i think the cost was around 12 quid for a metre length
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Old 06-05-2005, 03:11 PM   #17
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Get hold of a little book ZEUSS Tables
Covers all Nuts, Bolts, Thread info, Dill sizes for clearance holes & tapping threads & drill size.
It's the dogs, somewhere down the line it will pay for itself in gold.
Last time I got one was about 1.99 engineering section / bookshop
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Old 06-05-2005, 04:21 PM   #18
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I've got one.
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Old 06-05-2005, 06:12 PM   #19
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anyone interested in my thoughts on the matter?...













... I thought not.......
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Old 06-05-2005, 06:47 PM   #20
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go on then
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