Nigel Mercier ® wrote:
Can anyone help me identify a bolt thread?

On my imperial steam driven micrometer, the diameter measures 0.392"
(so it's 10mm) and the pitch is 1mm. So muggings here assumes it's a
standard 10mm bolt thread, but having bought one it is much coarser.

What is it, and where can I get a bolt with this thread?


2 BA ish

"Nigel Mercier ®" wrote in message
...
Can anyone help me identify a bolt thread?

On my imperial steam driven micrometer, the diameter measures 0.392" (so
it's 10mm) and the pitch is 1mm. So muggings here assumes it's a
standard 10mm bolt thread, but having bought one it is much coarser.

What is it, and where can I get a bolt with this thread?

It is M10 x 1.0mm - a non-preferred BS size. You can get the bolts from most
good industrial fastener suppliers, but you are likely to run into minimum
order quantities or charges if you only want one.

Colin Bignell

Subject: Identify a bolt thread
From: Nigel Mercier ®
Date: 01/08/03 13:03 GMT Daylight Time
Message-id:

Can anyone help me identify a bolt thread?

On my imperial steam driven micrometer, the diameter measures 0.392" (so
it's 10mm) and the pitch is 1mm. So muggings here assumes it's a
standard 10mm bolt thread, but having bought one it is much coarser.

What is it, and where can I get a bolt with this thread?

The std 10mm pitch is 1.50mm which you'd know if you looked up a bolt pitch
chart on Google or had a Zeus book. 1mm is a fine thread pitch used for special
bolts such as big end bolts and flywheel bolts in engines. But as you don't say
what this bolt is off.....

Dave Baker - Puma Race Engines (www.pumaracing.co.uk)
"How's life Norm?"
"Not for the squeamish, Coach" (Cheers, 1982)

On Fri, 01 Aug 2003 13:03:23 +0100, Nigel Mercier ®
wrote:

On my imperial steam driven micrometer, the diameter measures 0.392" (so
it's 10mm) and the pitch is 1mm. So muggings here assumes it's a
standard 10mm bolt thread, but having bought one it is much coarser.

10mm fine. Most of the larger metrics are fairly common in both a
standard and a fine pitch. 1.25 is the usual alternative to the 1.5
coarse pitch, but 1.0 is a standard too.

If the diameter really is 10mm, then it's probably metric - there's no
obvious imperial size close to that.

Is the bolt head marked ?

"Nigel Mercier ®" wrote in message
...
Can anyone help me identify a bolt thread?

On my imperial steam driven micrometer, the diameter measures 0.392" (so
it's 10mm) and the pitch is 1mm. So muggings here assumes it's a
standard 10mm bolt thread, but having bought one it is much coarser.

What is it, and where can I get a bolt with this thread?

There is Metric Coarse and Metric fine

You need to give the tpi and the root diameter to identify it correctly.

Rick