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STI-M/Mf (metric / metric fine)

STI-Precision Thread plug gauge M/Mf

1. Before installing the V-COIL wire thread insert for metric or metric fine threads: Inspection of a holding thread cut with an STI screw tap using an STI precision thread plug gauge.

2. Testing the dimensional accuracy of a V-COIL wire thread insert installed in the holding thread with a precision thread plug gauge for standard threads.

Metric ISO-thread for V-COIL wire thread inserts
Gauge dimensions acc. to DIN ISO 1502