AJS & Matchless Owners Club

Posted: **Wed Jul 12, 2017 6:02 pm**

I need to helicoil the thread on the sump plug of my G80S '54

- looking on ebay to buy a helicoil and tap - getting confused by all the options listed for 1/4 BSP - I presume it is 1/4 BSP 19G I need? - can anyone confirm

Posted: **Wed Jul 12, 2017 7:25 pm**

It's a parallel thread - 1/4" BSP - 19 t.p.i.
Referred to as 1/4" BSPF, 1/4" BSPP or G1/4"

Don't get the taper thread 1/4" BSPT or R1/4"

Posted: **Wed Jul 12, 2017 10:25 pm**

thanks Pharisee

AJS & Matchless Owners Club

Sump drain plug size?

Sump drain plug size?

Re: Sump drain plug size?

Re: Sump drain plug size?