Hi Guys,
I recently strip the cross nut on my manual 3in1 lathe/mill and I can't find the replacement part from the manufacture... unfortunately... It's a Bolton Tools AT520 12" x 20" Combo Lathe/Mill | AT520 . But they don't stock that part any more and I can't find any info on the lead screw to buy a replacement or make one.
I need to identify the screw size/pitch... so maybe I can find a nut that can fit it or threaded one myself??? Is that possible? Can I get a tap that's the right size and just tap it like a normal screw?
Attached picture and sizes.
thank you.
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08-25-2016, 10:02 PM #1
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Help me identify this lead screw size
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08-26-2016, 04:53 PM #2
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Re: Help me identify this lead screw size
Any one guys? any idea that can help me out?
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08-26-2016, 05:10 PM #3
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Re: Help me identify this lead screw size
5/8-11
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08-26-2016, 06:47 PM #4
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Re: Help me identify this lead screw size
Plain ol' acme thread.
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08-26-2016, 06:47 PM #5
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Re: Help me identify this lead screw size
Is it 5/8-10 or 5/8-11? I thought it was 10?
Originally Posted by 109jb
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08-26-2016, 08:01 PM #6
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Re: Help me identify this lead screw size
5/8-11 is common bolt size. Based on your pitch measurement of 2.3mm, that is 1/(2.3/25.4)=11.04 threads per inch. The common acme size would be 5/8-8. I assume you want a nut that actually fits. Neither 10 TPI or 8TPI is going to fit the screw unless your measurement is off.
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08-26-2016, 08:06 PM #7
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Re: Help me identify this lead screw size
It look like it should be 5/8-10
10 thread per 1"
Major Diameter .625
Minor Diameter .498 to .533 (can't get a accurate measurement.
But now I can't even find a simple freak nut that's 5/8-10 that cost less than 80.00. Some place has the nut for 25buck... but demand a minmum purchase of 60.00.. crazy,....
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08-27-2016, 07:57 PM #8
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Re: Help me identify this lead screw size
Jimmyaz,
A vendor on eBay sells cross feed nuts that you might be able to retrofit or maybe he might even make what you need.
See attached link for details:
derewa2 | eBay
Jeff...
Originally Posted by jimmyaz
Patience and perseverance have a magical effect before which difficulties disappear and obstacles vanish.
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08-27-2016, 08:10 PM #9
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Re: Help me identify this lead screw size
Or a ballscrew retrofit might be cost effective.
Zyltech Antibacklash Ball Screw 1605 w ballnut BF BK12 End Support L 550mm | eBay
Jeff...Patience and perseverance have a magical effect before which difficulties disappear and obstacles vanish.
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09-02-2016, 05:28 PM #10
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Re: Help me identify this lead screw size
Roton sell lead nuts.
Lead Screws - Main Page for Acme Screws and Nuts - Roton Productsyoutube videos of the G0704 under the name arizonavideo99
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