Author Topic: BA screws  (Read 1763 times)

Online Brian

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BA screws
« on: 05.11. 2009 03:14 »
Recently someone was asking where to get 5BA screws to hold tank badges on. This mob seem to have quite a good range of BA screws in steel and brass, I've used them before and can recommend their service.

http://www.ba-bolts.co.uk/bolts.html

Offline Josh Cox

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Re: BA screws
« Reply #1 on: 05.11. 2009 03:23 »
Brian,

From very first hand experience with the tank badge screws you speak of, 5BA, they were infact 1/8 BSW 40TPI, not 5BA. the bolt/screw part numbers versus thread chart is wrong on that item ( on the one Olev posted ).

1/8 BSW 3.175mm 40 TPI
5BA 3.2mm

Hard to tell them apart, but luckily my local fasteners joint had both 5BA and 1/8 BSW, the 5BA thread was damaged by inserting, the 1/8BSW was not.

I believe it stands to reason that it would be 1/8BSW.

Frame bolts BSC
Engine bolts BSW
Head bolts BSF

Tank badge screws, from my experience BSW.

Josh
0428 241 105
Joshua_Cox1@westnet.com.au
Black 1953 Golden Flash Plunger

Offline olev

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Re: BA screws
« Reply #2 on: 05.11. 2009 09:32 »
So Josh,
A good screw brings out the best in you, hey.

Offline muskrat

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Re: BA screws
« Reply #3 on: 05.11. 2009 10:46 »
And the only NUT is holding the handlebars.
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, .
Australia
Muskys Plunger A7

Offline Josh Cox

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Re: BA screws
« Reply #4 on: 05.11. 2009 10:53 »
If this type of behaviour continues, there will be some reamings. *eek*
Black 1953 Golden Flash Plunger

Offline unclemeat

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Re: BA screws
« Reply #5 on: 05.11. 2009 12:25 »
This thread will be stripped if you're not careful  *doh*

BTW... agree with 1/8 BSW.
BSA A10 GOLDEN FLASH 1954
CHANG JIANG COMBO 1968
TRIUMPH THRUXTON 2007