TRAPEZOIDAL gauges are manufactured according to the DIN 103-9 standards.
In the case of tolerance, 7H/7e for medium tolerance quality and 8H/8c for coarse tolerance quality are recommended.
Acceptance Criteria for GO/NOT GO Gauge
GO Gauge: When the GO gauge enters and passes the complete length of the work piece thread under the condition that it is screwed by hand and does not use excessive force .
NOT GO Gauge: When the NOT GO gauge do not enter the component by more than two turns of the thread from both ends under the condition that it is screwed by hand and does not use excessive force.