4mm ball studs with 3mm"ish" shank

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TRX-1-3: Super Member; Posts: 1759; Joined: Sat Mar 29, 2014 12:13 pm; Location: USAG Humphreys, South Korea; Has thanked: 1413 times; Been thanked: 776 times

4mm ball studs with 3mm"ish" shank

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Post by TRX-1-3 » Tue Nov 29, 2022 1:18 am

I've ordered some Tamiya 4mm ball cups.

I plan on reaming the sleeves to accept 4-40 threads. But I still need to source some ball studs that have a 3mm threaded portion. I think a 4-40 threaded portion would also work. It's not a runner and I just need the look, ya know? I know a 4mm ball is a little under spec'd for a racing buggy but if I can pull this off it will look bitchin'!

Thank you for your time/help

Hope you're doin' something fun.

juicedcoupe: Super Member; Posts: 3008; Joined: Sun Aug 16, 2020 4:05 pm; Location: Pascagoula, MS; Has thanked: 235 times; Been thanked: 1753 times

Re: 4mm ball studs with 3mm"ish" shank

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Post by juicedcoupe » Tue Nov 29, 2022 2:02 am

Just for reference, Tamiya "4mm" ball studs actually measure about 3.8mm. All the ones that I have, have a M2 thread.

Always looking for new and interesting ways to waste money.

juicedcoupe: Super Member; Posts: 3008; Joined: Sun Aug 16, 2020 4:05 pm; Location: Pascagoula, MS; Has thanked: 235 times; Been thanked: 1753 times

Re: 4mm ball studs with 3mm"ish" shank

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Post by juicedcoupe » Tue Nov 29, 2022 2:22 am

The ones on my Losi Mini JRX2 measured 3.9mm. The thread looked like M2.5 (maybe 2.6). If used with a helicoil, they'd probably work.

Always looking for new and interesting ways to waste money.

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4mm ball studs with 3mm"ish" shank

4mm ball studs with 3mm"ish" shank

Re: 4mm ball studs with 3mm"ish" shank

Re: 4mm ball studs with 3mm"ish" shank

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