------ Original Message ------
From: "mike allen" <animal@...>
To: [email protected]
Sent: Sunday, 5 Feb, 23 At 03:41
Subject: Re: [SouthBendLathe] QCTP Height Adjustment Screw

The stud probably is a 3/8 24 on a DOrian Or Alorias (sp) ,. All of the imports I have are metric , but I can't say what they are . Take the tool holders to your hardware store & see what threads fit . Is the hole on the non threaded one smaller than the stud from the other one ? I would think you would want all your threads to match on all your tool holders . A lot of these imports used real soft screws . When I got my set I went down to my hardware store & bought bag of 100 good quality screws & replaces all the dog point screws on the tool holders . If you cant get dog points , plain allen screws will work fine . I also picked up 20 good quality of the large allen screws for the height adjustment & a bag of jam nuts to fit them .

animal

On 2/4/2023 6:56 PM, G K via groups.io wrote:

Hey Guys,

Recently acquired a Phase 2 tool post for my SB9c. I also acquired a couple tool holders that are missing the height adjustment screw. One has a threaded hole for the adjustment stud, and the other has a smooth bore. I have read elsewhere that the stud is 3/8-24, but when I check another stud ( from a separate holder) with the pitch gage, 24 does not check. Thinking maybe metric, the stud measures 9.75mm in diameter with a 1mm thread pitch. I guess for the smooth bore hole, I can make a stud with a tight fit and thread the protruding end 3/8-24. Is anyone aware what the correct thread diameter and pitch are for the adjusting screw? Both holders are no-name imports.

Thanks!