Wood Lathe Spindle Thread Adapter 4 Sizes 3/4 inch 5/8 inch 1-1/4 inch to 1×8TPI Lathe Headstock Chuck Thread Reducer Converter Professional Wood Turning Lathe Tool Accessory

Product NameWood Lathe Headstock Spindle Thread AdapterProduct DescriptionPackage including: Only 1 pc.Available Options:3/4 inch ×10TPI to 1 inch ×8TPIFemale internal thread: 3/4 inch ×10TPI (fits lathe spindle)Male external thread: 1 inch ×8TPI (fits lathe chuck)3/4 inch ×16TPI to 1 inch ×8TPIFemale internal thread: 3/4 inch ×16TPI (fits lathe spindle)Male external thread: 1 inch ×8TPI (fits lathe chuck)5/8 inch Smooth Unthreaded Bore to 1 inch ×8TPIInternal hole: 5/8 inch smooth unthreaded bore (no thread inside)Male external thread: 1 inch ×8TPI (fits lathe chuck)Comes with built-in lock screw to fasten onto smooth spindle shaft1-1/4 inch ×8TPI to 1 inch ×8TPIFemale internal thread: 1-1/4 inch ×8TPI (fits lathe spindle)Male external thread: 1 inch ×8TPI (fits lathe chuck)Key FeaturesWide Compatibility: 4 common styles convert various lathe spindle ends to standard 1 inch ×8TPI chuck thread. Covers threaded spindles (3/4 inch ×10TPI, 3/4 inch ×16TPI, 1-1/4 inch ×8TPI) and 5/8 inch smooth unthreaded spindle shafts, compatible with most mainstream mini wood turning lathes and standard wood lathe chucks.Solid Steel Construction: Machined from solid high-carbon steel with mirror polished surface, outstanding wear resistance and rust-proof performance for long-term workshop use.CNC Precision Machining: All threaded models feature accurately CNC cut internal & external threads for tight zero-wobble assembly. The 5/8 inch unthreaded bore is precision ground for perfect fit on smooth straight spindles, stable rotation even under high RPM cutting work.Secure Lock Screw Design: Exclusive lock screw equipped on the 5/8 inch unthreaded version; firmly clamps the adapter onto smooth spindle shafts without threads, prevents slipping or loosening during heavy wood turning for safer operation.Multi-size Selection: Four different input styles cover mainstream small wood lathe spindles, help hobbyists and professional woodworkers expand lathe equipment compatibility without replacing original chucks.Full Product IntroductionUpgrade your wood lathe flexibility with this multi-style spindle thread adapter. This precision metal converter connects your lathe’s original spindle end to universal 1 inch ×8TPI lathe chuck, allowing you to mount standard wood turning chucks, faceplates and drive centers freely.Made of sturdy solid steel with fine polishing finish, this thread reducer delivers stable low-vibration turning at high speed. Four widely-used input styles meet most mini wood lathe conversion demands: three threaded internal sizes for threaded spindles, plus a special 5/8 inch smooth unthreaded bore variant designed for straight non-threaded spindle shafts. The 5/8 inch model adds a locking screw to secure the adapter tightly on smooth spindles where no threads are present.Perfect for both amateur woodturning hobbyists and professional woodworkers, this essential lathe accessory maximizes your machine’s functionality and saves the cost of purchasing multiple matched chucks.