robbyc0
United Kingdom
25 Posts
Posted - 10/06/2013 : 07:35:19
My stuffing box has a grease fitting in the threaded steel tube and a remote greaser fitted. The greaser has come off and been lost. I am trying to find out what the thread is to replace. I have tried m8, 3/8 whitworth, 3/8 bsp and its non of those. The 3/8 bsp greaser just flattened its threads after going in about a turn and a half. It's a 1" tube and the stuffing box has heavily castellated nuts. Original Petter AC2/w. Any ideas?
kcalco
United Kingdom
58 Posts
Posted - 12/06/2013 : 00:19:22
Hi You will probably find it's British Standard Brass which are all 26TPI no matter what diameter it is. (about 1mm pitch on a metric rule).
If is not then it may be 3/8 UNF as a lot of brake pipe fitting were this thread.
I assume it was 1/8 x28 BSPF you tried 0.383" dia.
Can you see if the thread is Tapered? if so then it will be 1/8 x28 BSPT.
Next time i'm on my boat i will take a look.
Regards Ken
robbyc0
United Kingdom
25 Posts
Posted - 05/07/2013 : 09:02:52
Thanks Ken - I'd be very interested to know before I tap it out to M8 which is the other solution.
kcalco
United Kingdom
58 Posts
Posted - 11/07/2013 : 13:57:27
Hi
The brass fitting is an obsolete enox fitting.
The pipe nut thread is 7/16 x 20 UNF.
I didn't remove the fitting from the stuffing box.
Regards Ken
robbyc0
United Kingdom
25 Posts
Posted - 14/07/2013 : 21:21:35
Thanks
Stuffing box greaser
- Sabre27Admin
- Site Admin
- Posts: 244
- Joined: Tue May 09, 2017 5:10 pm