Wanner grease-gun thread ?

[Bob Unitt 1Participant @bobunitt1]

Does anyone know what the thread is of the 'delivery nozzle' of a Wanner grease-gun (about 20 years old) ? I'm referring to the component that actually attaches to the grease-nipple, as I need to make a smaller one to fit the quill grease-nipple on my Fobco Star drill.

[Bob Unitt 1Participant @bobunitt1]

[Tony Pratt 1Participant @tonypratt1]

Can you not measure it?

Tony

[Ian ParkinParticipant @ianparkin39383]

When i want to grease the quill on my fobco I take the nipple out and grease it with a male ended gun.then put the small nipple back in

or if you are desperate to leave the original small nipples in situ make a small adapter with a nipple and a short length of tube ending in a fitting to go on the small ones

Edited By Ian Parkin on 02/11/2021 17:15:30

[old martParticipant @oldmart]

I would guess that most of the grease gun threads would be 1/8 BSP.

Here is a link to the Motalis website which is very useful:

**LINK**

Edited By old mart on 02/11/2021 17:13:18

[noel shelleyParticipant @noelshelley55608]

As Old mart, 1/8" BSP ! It is NOT 3/8" UNF ! Standard grease nipples are available in many threads, UNF, BSF,BSP, BA,Metric and many sizes. Good Luck. Noel

[Philip RoweParticipant @philiprowe13116]

I grease my Fobco with my original Myford supplied oil gun, filled with grease. As its pretty useless as an oil gun it has at least redeemed itself in lubricating my drill. Phil

[DiogenesIIParticipant @diogenesii]

Just in case it's useful to any else, here's a link to Stephens Lubrication 'Wanner' page, 3/4 of the way down is an illustrated list of available nozzles for the telescopic guns.. ..no relation to this business, other suppliers are available etc….

Stephens Lubrication – Wanner…

[Bob Unitt 1Participant @bobunitt1]

I've established it's 3/8" by 28 TPI, but I can't find that thread in my references.

[Harry WilkesParticipant @harrywilkes58467]

Just in case you miss counted 3/8x 27 is gas thread

H

[Bob Unitt 1Participant @bobunitt1]

Posted by Harry Wilkes on 02/11/2021 18:30:50:

Just in case you miss counted 3/8x 27 is gas thread

H

No, I tried 27 and it didn't fit. It's definitely 28 TPI.

[Bob Unitt 1Participant @bobunitt1]

Posted by old mart on 02/11/2021 17:13:01:

I would guess that most of the grease gun threads would be 1/8 BSP.

Here is a link to the Motalis website which is very useful:

**LINK**

Edited By old mart on 02/11/2021 17:13:18

I think that's the grease nipple thread ??

[Maurice TaylorParticipant @mauricetaylor82093]

Hi,I made a new end for a grease gun and the thread was 1/8 bsp ,this is 0.383 in dia and 28 tpi . The same as what you have measured.

Drill a hole ,tap it 1/8bsp and see if it fits.

Maurice

[Simon Williams 3Participant @simonwilliams3]

Hi I've made special nozzles to fit the Wanner pump casting, I used 1/8 BSP (parallel) threads throughout. I'd expect it to be imperial because Wanner IIRC is Swiss so it's unlikely to be NPT.

1/8 BSP is 28 TPI.

1/8 NPT would be 27 TPI. It would also be a tapered rather than parallel thread form so that's a no on two counts.

M10 x 1.0 is close but no cigar, also 3/8 UNF (24TPI) is another near miss.

HTH Simon

edit – added in italics

Edited By Simon Williams 3 on 02/11/2021 20:38:10

[noel shelleyParticipant @noelshelley55608]

1/8" BSPP and 1/8" BSPT are BOTH 28 TPI ! It is the thread that is used on a 1/8" nominal bore pipe of .383" od, refered to as nomimal bore to allow for different wall thicknesses and therefore varing bore size. Noel

[Bob Unitt 1Participant @bobunitt1]

Now I know what the diameter and TPI are I can screwcut it, just not sure if the thread angle should be 55 or 60 degrees ?

[Howard LewisParticipant @howardlewis46836]

Since you have measured the OD, use Thread Gauges to establish both the Thread Form and the pitch, then you will know what the thread is!

Howard

[Bob Unitt 1Participant @bobunitt1]

Posted by Howard Lewis on 03/11/2021 18:43:40:

Since you have measured the OD, use Thread Gauges to establish both the Thread Form and the pitch, then you will know what the thread is!

Howard

It's too small for my old eyes, I can't tell the difference

[not done it yetParticipant @notdoneityet]

Posted by Bob Unitt 1 on 03/11/2021 18:46:37:

It's too small for my old eyes, I can't tell the difference

Use a magnifying glass or eyeware?

Just one example:

la-301424804309&gclid=Cj0KCQjw5oiMBhDtARIsAJi0qk1guZdbH0vSOMqB9DBTGXgvms7A60MvhrTwXfnM6JQ90DaW3dCem7AaAisVEALw_wcB&gclsrc=aw.ds”>https://uk.rs-online.com/web/p/magnifiers/2017939/?cm_mmc=UK-PLA-DS3A-_-google-_-CSS_UK_EN_Test_%26_Measurement_Whoop-_-Magnifiers_Whoop-_-2017939&matchtype=&aud-772940708079la-301424804309&gclid=Cj0KCQjw5oiMBhDtARIsAJi0qk1guZdbH0vSOMqB9DBTGXgvms7A60MvhrTwXfnM6JQ90DaW3dCem7AaAisVEALw_wcB&gclsrc=aw.ds

[Simon Williams 3Participant @simonwilliams3]

BSP is 55 degrees included angle, as it is a hang over from the days of Joseph Whitworth Esquire.

NPT is American so is 60 degrees.

Not going to make a discernable difference on a thread depth of 23 thou.

[Howard LewisParticipant @howardlewis46836]

If the Wanner is Swiss made, use a magnifier to check if the thread is not actually 10 mm diameter x 1 mm pitch.

Howard

[Bob Unitt 1Participant @bobunitt1]

Posted by not done it yet on 03/11/2021 19:09:41:

Posted by Bob Unitt 1 on 03/11/2021 18:46:37:

It's too small for my old eyes, I can't tell the difference

Use a magnifying glass or eyeware?

Just one example:

…

My browser didn't like that link, refused to open it.

[Bob Unitt 1Participant @bobunitt1]

Posted by Simon Williams 3 on 03/11/2021 19:15:56:

BSP is 55 degrees included angle, as it is a hang over from the days of Joseph Whitworth Esquire.

NPT is American so is 60 degrees.

Not going to make a discernable difference on a thread depth of 23 thou.

Thanks, I'll screwcut it until it fits.

[Bob Unitt 1Participant @bobunitt1]

Posted by Howard Lewis on 03/11/2021 19:49:25:

If the Wanner is Swiss made, use a magnifier to check if the thread is not actually 10 mm diameter x 1 mm pitch.

Howard

Definitely not – 1 mm pitch would be 25.4 TPI, and it's certainly not that. To be clear, I can see the TPI OK, it's just the thread form angle of this small thread that I can't judge by (old) eye.

Edited By Bob Unitt 1 on 03/11/2021 23:06:47

Edited By Bob Unitt 1 on 03/11/2021 23:08:07

[old martParticipant @oldmart]

BSP is still the most widespread pipe thread on the planet, all of the thread angles are 55 degrees whether straight or tapered. The 28 tpi is only used on 1/8 bsp which is the nominal bore of the pipe not the od like non pipe related thread sizes.

[Author]

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