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Metric threading kits let you turn metric threads on your mini lathe. All of our conversion kits come with complete step-by-step instructions. Conversion Kits for mini lathes & mini mills. Bed extensions, change gears, metric threading, air spring kits and more at LittleMachineShop.com.

Change Gears for Threading - LittleMachineShop.com

This calculator determines the correct change gears for any thread pitch. Works for all mini lathes and HiTorque Bench Lathes.

Using the Three-Wire Method to Measure Threads

The pitch diameter of a threaded object can’t be measured directly except with specialized thread micrometers. But using three wires of the same known diameter, the thread pitch can be measured with a standard micrometer.

Dial Assembly | Thread Dial Indicator | LittleMachineShop

Cut inch threads to a mini lathe with this dial assembly. The thread dial indicator does not cut on a metric lathe with a metric lead screw, so cut inches only.

Metric Threading Kit 12" 1690 - LittleMachineShop.com

This kit replaces the lead screw and half nuts so you can more easily cut metric threads. You cannot use a threading dial with this kit installed. There is no metric threading dial. See the Compatibility tab for machines known to work with this product.

CJ9518D - LittleMachineShop.com

The lathe is supplied with a lead screw that will produce Imperial Threads in a range from 12 to 52 threads per inch, or metric threads in a range from 0.4-2.0 mm pitch.

Threading Dial Assembly (Inch), G0516 CLOSEOUT 2545

This kit includes all the parts needed to add a threading dial for cutting inch threads to a G0516 with an inch-based lead screw. Also fits SIEG C6 10x21 lathes and other SIEG M6 Lathe Mill combos.

Upgrade Kits: Lathe Upgrade Kits - LittleMachineShop.com

Kits for upgrading your lathe with longer beds, metric threads, and other enhancements

Half Nuts, Mini Lathe, Metric 3063 - LittleMachineShop.com

The two half nuts for mini lathes that use a top and bottom half nut design. Both sides are threaded to ensure good performance from the lead screw. These half nuts fit the "metric" lead screw.

Metal Gear Kit | Mini Lathe Gears | LittleMachineShop

This metal gear kit contains a variety of metal gears to help change plastic gears on a metal lathe into steel.