- AGD (ANSI B1.16) Standard Adjustable Thread Ring Gages
- Unified Thread Series (UNC-UNF-UNEF)
- Certification of Conformance is included with all Ring gages at no extra charge
- Ships from Connesticut or Holland Michigan
- Manufactured in the USA by Hemco Gages of Holland Michigan
- View Pitch Diameter Chart HERE
Thread Ring Gages - Hard CHROME
