What Size and Type of Tap - Seat Fixings?

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myoldjalopy
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What Size and Type of Tap - Seat Fixings?

Post by myoldjalopy »

Hello - I expect Phil or someone with similar knowledge will be able to help.
I want to fix the passenger seat a bit further back, but the bolts won't screw through the appropriate holes in the floor because they are 'crudded up'. I'm thinking the holes need going over with a tap but not sure what size or type.............
philthehill
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Re: What Size and Type of Tap - Seat Fixings?

Post by philthehill »

5/16" x 22 TPI BSF. 2nd cut.

If you have to purchase - get a High Speed Steel (HSS) version as the Carbon Steel (CS) is prone to breakage.

A Supplier I can recommend is Tracy Tools Ltd http://www.tracytools.com

http://www.tracytools.com/taps-and-dies ... 22-tpi-bsf

Phil

myoldjalopy
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Re: What Size and Type of Tap - Seat Fixings?

Post by myoldjalopy »

Brilliant! Epic advice as ever, Phil. Thank you so much :D
biomed32uk
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Re: What Size and Type of Tap - Seat Fixings?

Post by biomed32uk »

If they are new(ish) seat mount plates they could well be M8 as mine are, although as you say they are crudded up they are more than likely be old and 5/16.
myoldjalopy
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Re: What Size and Type of Tap - Seat Fixings?

Post by myoldjalopy »

I should have said - the car is a 1955 SII. The floor pan is original - I seriously doubt the mount plates have ever been replaced. So I'll go with 5/16........
biomed32uk
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Re: What Size and Type of Tap - Seat Fixings?

Post by biomed32uk »

Definately, they wont be metric !.
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