Enrollment Deadline: 1 June 2025

Participants will report the outside diameter of plug gages and the expanded uncertainty, calculated per ISO GUM with k=2 or a similar method. This test is suitable for participants who make dimensional measurements with uncertaincies that are not significantly smaller than 0.0001" as calculated per ISO GUM.

Sample Description: Two slightly different plain plug gages. The sizes of the samples provided are chosen to be in the range of interest to most fastener manufacturers.

Samples ship in August for a total of one shipment.

This test is included on CTS' Scope of Accreditation to ISO/IEC 17043.