Newb question

Newb question

This topic has 7 replies, 5 voices, and was last updated 16 December 2016 at 18:48 by sean logie.

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16 December 2016 at 16:34 #272229
sean logie
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@seanlogie69385
A bolt broke that’s used for carriage lock and I’m trying to order one and I’m crap at identifying whitworth bolts and I would appreciate a lesson in identifying whitworth bolts.

The bolt measures .298″ in diameter, it has a 18tpi thread ,what size is it please .

A frustrated

Sean 😎
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16 December 2016 at 16:34 #8441
sean logie
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@seanlogie69385
16 December 2016 at 16:39 #272230
Raymond Anderson
Participant
@raymondanderson34407
If it is BSW then the nearest is 5/16 x 18 , the Ø for that is 0.3125.
16 December 2016 at 16:40 #272231
Roger Provins 2
Participant
@rogerprovins2
The only 18 tpi whitworth I can see on the chart is 5/16"
16 December 2016 at 17:12 #272237
sean logie
Participant
@seanlogie69385
Posted by Roger Provins 2 on 16/12/2016 16:40:40:

The only 18 tpi whitworth I can see on the chart is 5/16"

Have you a link for the chart your reading from .

Sean
16 December 2016 at 17:34 #272242
Thor 🇳🇴
Participant
@thor
Hi Sean,

May be this link can be of use? You can access other thread form charts from that web page.

Thor

Edited By Thor on 16/12/2016 17:34:35
16 December 2016 at 18:18 #272249
Chris Evans 6
Participant
@chrisevans6
A Zeus book is an essential in any workshop. Think my last one cost around £6 it was the third one in over 50 years, the others fell apart with use.
16 December 2016 at 18:48 #272254
sean logie
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@seanlogie69385
Thanks all

Sean
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