Metric Thread ID Kit Complete, Unlike other kits, these light weight anodized aluminum thread gauges are threaded with both male and female ends so
FITTING, ADAPTER, METRIC, M10X1 MALE TO 1/8 NPTF FEMALE, BRASS
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Tectite 1/4 in. (3/8 in. ) Brass Push-To-Connect x 1/2 in. Male Pipe Thread Reducing Adapter FSBMA1412 - The Home Depot
An Introduction to Multi-Threading C Programs
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Thread Gauge Checker
Metric Hydraulic Fittings Identification Chart - News - Yuyao Jiayuan Hydraulic Fitting Factory
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HRTR-K1.1 - Hercules for o-rings, hydraulic seals, cylinders