Request help with acme(?) thread ID
#1
Member
Thread Starter
Join Date: Sep 2010
Location: United States
Posts: 127
Upvotes: 0
Received 0 Upvotes
on
0 Posts
Request help with acme(?) thread ID
I'm looking to determine the thread sizing of this inexpensive WEN 2-axis vice. Was hoping someone could give a good guess based on just the images I posted of the thread pitch measurements and the fact that major diameter is .466"/11.88mm. Thread pitch seems to be a bit in-the-wind and not ending on-the-tooth.
Best guess is it's a general purpose acme 2G thread. Looking at both SAE and metric charts I can't correlate dimensionally.
Best guess is it's a general purpose acme 2G thread. Looking at both SAE and metric charts I can't correlate dimensionally.
#3
Member
Thread Starter
Join Date: Sep 2010
Location: United States
Posts: 127
Upvotes: 0
Received 0 Upvotes
on
0 Posts
Appreciate the reply XSleeper!
Ahh, I only found metric being measured at 1mm. At 3mm it is spot-on 10 threads. Still haven't found how 12x3 correlates to 10 but all other dimensions fit into place.
Ahh, I only found metric being measured at 1mm. At 3mm it is spot-on 10 threads. Still haven't found how 12x3 correlates to 10 but all other dimensions fit into place.
#4
I believe the TR12 will have a major dimension between 12mm and 11.7 mm... and you said it was 11.88, so...
at 3 *cm* it is 10 threads. that's exactly 3 mm per thread. That's where the 3 comes from. 3 mm.
30 mm = 3 cm... 30/3 = that's 10 threads.
Thus TR12x3.
at 3 *cm* it is 10 threads. that's exactly 3 mm per thread. That's where the 3 comes from. 3 mm.
30 mm = 3 cm... 30/3 = that's 10 threads.
Thus TR12x3.
#5
Member
Thread Starter
Join Date: Sep 2010
Location: United States
Posts: 127
Upvotes: 0
Received 0 Upvotes
on
0 Posts
Great info XSleeper.
Thanks for explaining the proper metric thread calculation. It opened my eyes to the goober I am. For some strange reason I was reading visual enumerations as mm, not cm. A total brain lapse and I can't use the before-my-morning-coffee excuse.
Thanks for explaining the proper metric thread calculation. It opened my eyes to the goober I am. For some strange reason I was reading visual enumerations as mm, not cm. A total brain lapse and I can't use the before-my-morning-coffee excuse.
#6
Thread pitch seems to be a bit in-the-wind and not ending on-the-tooth.
I doubt you'll match that exactly.
#7
Member
Thread Starter
Join Date: Sep 2010
Location: United States
Posts: 127
Upvotes: 0
Received 0 Upvotes
on
0 Posts
That's the threaded bar from a vise ?
I doubt you'll match that exactly.
I doubt you'll match that exactly.
As for matching thread, TR12x3 looks to fit the bill. Still, I do intend to use (or thread my own) plastic nuts which should offer a "little" wiggle room if needed.
#8
I didn't mean to suggest it wasn't high quality.
Vice bars like that are not always tapped to a known size.
Vice bars like that are not always tapped to a known size.
#9
Member
Thread Starter
Join Date: Sep 2010
Location: United States
Posts: 127
Upvotes: 0
Received 0 Upvotes
on
0 Posts
I didn't mean to suggest it wasn't high quality.
Vice bars like that are not always tapped to a known size.
Vice bars like that are not always tapped to a known size.
I totally agree this class of vice (and possibly even better) may use either looser tolerances or altogether proprietary threading.