M38 Carcano Lower Band Swivel STUD

Hello fellow Carcano aficionados! I am stuck in the house with a bad case of gout so I thought I would use this time draw up a M38 Carcano Lower Band Swivel STUD. I made one awhile back and it came out OK but maybe not to perfect dimensioning. Another forum member has asked me about how to make one so I thought if anyone is interested in measuring an original we could come up with an accurate drawing and leave that as a post on the forum. If say a couple of people provide dimensions we can come up with some good numbers. I will then redraw to scale and leave as a post on the forum. This little part is always hard to find. So if you have a digital caliper and original stud handy please measure the Dim’s A thru N and post or send me the dimensions. I am not getting anything out of this other than being able to make a good part myself. Also I will later do a step by step with pictures on how to make one when my foot gets better. It looks more complicated than it is but helps to have a lathe and mill.
Salt Flat

Will try and do some ciphering directly.

Moderator Edit:

The drawing in this post has been deleted as it it is later superceded with an updated version.

Did the measurements on one. Would that suffice or do you want more?

You should go into the small part business. There is a definite shortage of parts. Notably the bolt head screws off of Lebel and Berthier rifles. Vetterli Carcano front bands also don't seem to exist.

Jmoore, Yes, I would welcome more measurements. I eyeballed some of the drawing and I think it is close but would like to update the drawing with any input I get. Thx!

Aragorn, Yes, I think there is a market for these small parts. Wisner's in Washington makes a lot of small parts but not for milsurps. I personally don't feel the motivation to do it commercially but for the right peson it could work.

Thx, Salt Flat

Jmoore, I re-read your post. I think neasurements form one part would be enough, Please send me the numbers and I will update. THX, Salt Flat

Well, too late, I already started on another.

Partly because the first was a bit grungy and worn at the anti-rotation boss. Also because it's swivel hole (Index "B") goes all the way through. As does the next one. Additionally, now using a convertible digital caliper set that reads in metric and English units. Threads seem to be .8mm pitch or roughly 31tpi.

Entry one (not quite complete vis. threads)
M38 cal. 7,35

A 0.193 thread OD
B Wire diameter: 0.141"
C 0.264-0.267"
D 0.532-0.538"
E 0.082-0.084"
F 0.277-0.285"
G D-F
H 0.477"
I
J ~0.070"
K 0.262"
L 0.120-0.123"
M
N 0.046"

Transition radius from lug to outer face "E" 0.030-0.050" (Much smaller on the next sample forthcoming.)

Might I suggest either the innermost face or, preferably, the inner face of dimension "E" be the primary longitudinal datum? Dia "C" seems a good primary radial datum.

M38 6,5 cal.

A 0.192 .8mm thread pitch
B 0.144" wire diameter, through hole
C 0.260-0.264"
D 0.528"
E 0.078-0.083"
F 0.272"
G D-F
H 0.461-0.467"
I
J 0.090"
K 0.278"
L 0.095"
M
N 0.050"

Transition radius: 0.032" both sides

Subject to correction for lousy typing skills, bad handwriting, haste, and general stupidity.