Nuts & bolts question ????

fishon71 · Post by **fishon71** » Fri Oct 13, 2006 5:22 pm

Okay, I know the nuts & bolts on these are not standard USA or metric. What are they and where can I buy a set of these type wrenchs?

Also is the thread different on the nuts and bolts?

I have collected a bunch of these I'm restoring. All though an adjustable wrench gets most nuts off, I would prefer the correct tool.

Thanks, Bill

Duane A. · Post by **Duane A.** » Fri Oct 13, 2006 7:02 pm

One good place to look in the U.S. is your local Snap-on Tool dealer. I bought the wrenches and sockets I needed from them at a fair price. Lifetime replacement on the tools etc. Should you need taps and dies check with Maryland Metric's (1-800-638-1830) reasonable prices and great service.

rikanaka · Post by **rikanaka** » Sat Oct 14, 2006 3:14 am

This place in Michigan, http://www.britishtool.com/ also sells all the Whitworth tools you'll need. Stuff comes up for bid on ebay, too, but they're usually in the UK.

fishon71 · Post by **fishon71** » Sat Oct 14, 2006 2:42 pm

Okay, Whitworth, that is what I was looking for. But need answer on threads....

"Also is the thread different on the nuts and bolts?"

Are the threads Whitworth or standard metric ?

Bill

Charles UK · Post by **Charles UK** » Sat Oct 14, 2006 7:14 pm

The majority of threads used on Seagull (you havn't said which you own) are BSF British Standard Fine, it just happens Whitworth spanners are the right size.
There are some notable exceptions like the magneto base plate locking screw which is British Standard Cycle Threads.

John Williams is talking about compiling a complete kit of replacement nuts & bolt in stainless steel for only a little more than the steel ones he carries in stock at the moment.
Talk to him about you fastener requirements, he seems to carry all the impossible to find ones.

I have used the stainless steel transom screws & washers he is selling for about the same cost as the new brass & mild steel ones, if your planning on using your Seagull for more than a couple or years & your transom screws or their washers are getting tired, then this upgrade is a no brainer.

CatiGull · Post by **CatiGull** » Sun Oct 15, 2006 1:48 am

On the east coast of the US there is a source in upstate NY cited below..

Charles - thanks for setting me straight on the fasteners - I thought Whitworth described the British thread system and BSF was a subset of WHitworth fasteners, but am obviously wrong on this one.

There is an outlet for BSF here in Lyons NY...isnt that wierd....

BRITISH TOOLS & FASTENERS, LLC
7696 ROUTE 31, LYONS NY 14489
sales@britishfasteners.com
TEL- 315 946 9400 FAX - 315 946 9344

I might be able to stop in next time Im travelling out there this week.

John - are there any strange sizes on 'Gulls that are hard to source??

rikanaka · Post by **rikanaka** » Sun Oct 15, 2006 10:14 pm

The threads, depending on the part, are BSF, BSW, or BA. THere is an Excel file on the yahoo groups British Seagull Owners UK site, but you have to join the yahoo and newsgroup to access it http://groups.yahoo.com/group/british-s ... owners-uk/.

If you don't want to sign up for yahoo and the newsgroup, PM me with your email address and I'll send the spreadsheet to you. The listing is not complete but it is helpful.

Post by **RickUK** » Mon Oct 16, 2006 11:19 am

Just to add my bit - the nuts and bolts on Seagulls are predominantly 1/4" or 5/16" BSF - the few 3/16" BSF sizes are the same thread pitch as 2BA.
The only Whitworth thread used in on the transom clamp screws.
Well worth getting the right wrenches - open end and ring ended, which are either dual stamped Whitworth & BSF or possibly just Whitworth where they are out of step - i.e a 1/4" Whit spanner fits a 5/16" BSF nut or bolt.
If possible, get hold of a set of 1/4" and 5/16" BSF taps and dies, and used them to chase out threaded holes and old fasteners before reassembly - you will often remove a lot of old corrosion product from threads in doing this, and make reassembly and disassembly in the future much easier. Rick

Charles UK · Post by **Charles UK** » Mon Oct 16, 2006 1:57 pm

Rick's reply covers all the 102's, the little 40 series, the FV series, all the centurys & all the 40 series,
So for anything made from 1937 until circa 1980 after that it pays to check if a M6 nut will go on it, as the 170, 125 had a mixture of Metric & BSF/Whitworth & the QUBs were Metric on the top end but predominantly Imperial on the bottom.

Donald A · Post by **Donald A** » Wed Oct 25, 2006 2:01 pm

And didn't someone on a previous thread of this web site say that the hole into the petrol tank is British Standard Pipe? This comes in two sorts - Parallel (the sides are parallel) and tapered (sides of the screw are tapered). The Seagull thread is Parallel, so if the matching blanking off stud on the other side only goes half way in, you've probably got a tapered stud. Known as BSPP or BSPT for short.
The sizes are difficult to figure out from a thread guage and a zeus book - but I think the top one of the fuel tap is 1/8 BSPP (28 tpi) and the lower one is 1/4 BSPP (19 tpi) - perhaps one of the Moderators could say whether I've got this is right or wrong?
Donald A

Andrew Craig-Bennett · Fri Oct 27, 2006 11:43 am

Just to encourage John to go ahead with the stainless fasteners idea.

Charles UK · Post by **Charles UK** » Fri Oct 27, 2006 5:42 pm

Sorry to say I have never checked out the fuel tap threads it's not one that you can really swop with anything else but the fuel tank one does seem like 1/8 BSP & it would be logical for the bottom one to be 1/4 BSP, both seem to be parrallel.

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Nuts & bolts question ????

Nuts & bolts question ????

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