M thread (metric ISO-thread) | Determination – Thread Types | Screw Joints | Technical information | BOLA - Tubing, Stirrer Shafts, Magnetic Stirring Bars - Labware made of PTFE
Thread Type Guide: NPT, BSP, JIS, SAE, Metric – Trimantec
Thread Chart (Metric) | Major and Minor Diameters
ISO 68-1 The basics of threads – the basic and design profiles of a metric thread