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To cut true metric threads on a lathe with an Imperial (inch) lead screw (and vise versa) you can't just change the threading dial. You need our Metric Threading Kit which changes the leadscrew, half nuts and the threading dial. There is no threading dial available for metric threading.

Conversion Kits - LittleMachineShop.com

Metric threading kits let you turn metric threads on your mini lathe. All of our conversion kits come with complete step-by-step instructions. Air Spring Conversion Kit. Converts torsion spring mini mills to air spring. Allows travel to the top of the column. Provides better support for the mill head. $52.95.

Change Gears for Threading - LittleMachineShop.com

Changing these gears varies the speed that the lead screw turns in relation to the speed that the spindle turns. This allows you to cut threads with different numbers of threads per inch. This calculator determines the correct change gears for any thread pitch.

Mini Lathe Kits | Mini Lathe Spare Parts - LittleMachineShop.com

Upgrade your mini lathe with metal gears, a longer bed, and more with these mini lathe kits. From spare parts to extensions, your machine will be up to speed.

Metric Threading Kit 12" 1690 - LittleMachineShop.com

Metric threading kit for 7x12 mini lathes. 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.

Using the Three-Wire Method to Measure Threads - LittleMachineShop.com

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.

Threading Dial Assembly (Inch), G0516 - LittleMachineShop.com

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. See compatibility tab for reference to machines that are compatible with this part.

Metric Threading Kit 16" 4877 - LittleMachineShop.com

Metric threading kit for 7x16 mini lathe or HiTorque mini lathes that have the 7x16 bed extension. 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.

Mini Lathe Accessories - LittleMachineShop.com

This kit includes all the parts needed to add a thread dial indicator for cutting inch threads to a mini lathe. This dial assembly DOES NOT help you to cut inch threads on a metric lathe with a metric lead screw.

Threading Tools - LittleMachineShop.com

Inch dials, inch and metric threading; 1000 Watt (1.34 HP) brushless DC drive with spindle speed readout; Power longitudinal feed and power cross feed; Reversible lead screw for right and left hand threads; 4" (100 mm) 3-jaw self centering lathe chuck