Metric M4 x 0.7mm hand tap plug (No. 3) from Dormer, ideal for use with a wide range of materials. Can be used by hand, but may also be used in a machine if required. * Suitable for either through or blind holes * Manufactured from high carbon steel with accurately cut threads * Designed to produce repeatable tolerance threads * Length 53mm * Hole size 3.3mm * Shank diameter 4mm * Drive size 3.15mm * When tapping blind holes straight flute taps should be used in sets https://elecena.pl/product/27255332/dormer-e500m4no3-e500-m4-no3-hand-tap-plug-no-3 2024-11-13 https://elecena.pl/product/27255332/dormer-e500m4no3-e500-m4-no3-hand-tap-plug-no-3 2025-11-25