Overview

This thread adapter converts between M14 and 5/8-11 threads so you can mount the correct backing pad or accessory on your grinder/polisher. Choose the exact female-to-male direction to match your spindle and tool.

Best for

• Converting M14 ↔ 5/8-11 threaded accessories

• Backing pads and pad holders

• Polishing accessories and small cup wheels

• Quick compatibility fix when threads don’t match

Features

• Two-direction thread conversion with clear options

• Steel body with black finish for jobsite durability

• Compact size for everyday carry and quick swaps

• Simple install: hand tighten, then snug with a wrench if needed

Options

• M14 Female to 5/8-11 Male

• 5/8-11 Female to M14 Male

Fitment Note

Confirm both sides before ordering: your machine spindle thread and your accessory thread. If you’re unsure, send a clear photo of both thread ends and we’ll confirm the correct option before shipping.

Shipping Note

Most orders ship in 3–5 business days. If you have a deadline, message us first so we can check the fastest shipping option.

FAQ

• Which option do I choose?

Choose based on “your machine spindle” + “your accessory” threads. Example: if your machine is M14 male and your tool is 5/8-11 female, you need 5/8-11 Female to M14 Male.

• What does “female” and “male” mean?

Female = internal thread (hole). Male = external thread (stud).

• Can I use it for backing pads and cup wheels?

Yes. It’s commonly used for backing pads/pad holders, polishing accessories, and small cup wheels—anything that uses M14 or 5/8-11 threads.

• Will it fit all grinders/polishers?

It fits threads, not brands. As long as your spindle/accessory threads are M14 or 5/8-11, it works.

• Do I need tools to install it?

Usually hand-tighten first. If needed, snug with a wrench—do not over-tighten.

• Will this change my spindle speed rating?

No. Your machine and accessory RPM limits still apply. Always follow the lower RPM limit.

• What if I’m not sure which thread I have?

Send a clear photo of both thread ends (machine spindle + accessory). We’ll confirm the correct option before shipping.