Walter Screw Thread type to buy a tap.

Walter Screw Thread type to buy a tap.

This topic has 6 replies, 4 voices, and was last updated 7 January 2026 at 16:46 by Chris Mate.

Viewing 7 posts - 1 through 7 (of 7 total)

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7 January 2026 at 15:17 #831626
Chris Mate
Participant
@chrismate31303
Hi, I am making a 10mm tool holder for 6mm round insert for mini lathe. Walter does not sell 10mm tool holders for this.

I cannot find the thread type from them, I have a company I can maybe order a 2.5mm tap.

Screw:
FS2061 KGRPS T7IP

Walter 12mm Holder=SRDCN1212F06(I want a 10mm)

Thankyou….
Advert

7 January 2026 at 15:59 #831638
David George 1
Participant
@davidgeorge1
trY Cutwell https://www.cutwel.co.uk/srdcn1010-e06-standard-turning-tool-holder-10-x-10mm-shank-70mm-long-neutral-hand-45-degree-approach-screw-clamp-for-rcmt06-inserts-srdcn-series-korloy-1-06-019206

David
7 January 2026 at 16:04 #831641
JasonB
Moderator
@jasonb
Yep unless you like making tools there are plenty of other suppliers out there doing 10mm shank holders.

But if your inserts are the regular RCMT and RCGT 06 then a M2.5×0.45 Torx screw with the usual 60degree angle will do the job.

https://www.shop-apt.co.uk/torx-screws/1225-torx-screw-m25x045-7mm-long-torx-7.html
7 January 2026 at 16:08 #831642
DC31k
Participant
@dc31k
How much work is it to remove 2mm of material from the base of a 12mm holder compared to making a complete holder, its insert pocket (which is tapered) plus tapping the thread plus buying the screw?
7 January 2026 at 16:27 #831645
Chris Mate
Participant
@chrismate31303
On 7 January 2026 at 16:08 DC31k Said:

How much work is it to remove 2mm of material from the base of a 12mm holder compared to making a complete holder, its insert pocket (which is tapered) plus tapping the thread plus buying the screw?

Yes, Actually I have 10mm holder set for this small lathe, and I looked and can just mill the nose round, the insert fits good to rest of holder and its then the correct height as well, I can than order another 10mm holder, I just need to mill the sides at front so it looks right. This is an option.

But I will need the tap in any case for something else where this insert sits in front of a cut off boring bar.

So I just need to know which tap.
7 January 2026 at 16:38 #831649
JasonB
Moderator
@jasonb
As I said M2.5 x 0.45. is the thread so any M2.5 metric coarse tap will do.
7 January 2026 at 16:46 #831656
Chris Mate
Participant
@chrismate31303
On 7 January 2026 at 16:38 JasonB Said:

As I said M2.5 x 0.45. is the thread so any M2.5 metric coarse tap will do.

Thankyou…..Have a good day.
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