Aloha, fun & authoritative answers -- no cost, no registration, no passwords, no popups
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Where the
world gathers for metal finishing
Q&As since 1989

-----

Can M3 thread plug gauge be used on Nylon 66 plastic part

Q. M3 thread on Nylon 66 Molded part, needs to be verified using a thread plug gauge. Is it right/accurate to use M3 GO Thread Ring Gauges to verify the thread on the molded part or use different methods.

Jagadeesh Kumar
- Bangalore, Karnataka, India
May 28, 2020

A. It would be permissible to use a set of go/no go thread gauges on any material. However it is to be noted that the set must meet print dictated thread tolerance. Plastic is going to be a hard material (no pun intended) to create a "clean" thread in the m3 size range through casting. I would suspect that some post finishing would be required in order to achieve any sort of toleranced threads. Any reputable tap manufacturer should be able to point you toward a product that would be appropriate for your application. I believe YMW makes some taps targeted towards plastic work. you might start there. Good luck

Nathan Pitman
- Olympia Washington
August 12, 2020

Thanks Nathan for your insight.

Jagadeesh Kumar [returning]
- Bangalore Karnataka
September 8, 2020

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: