Stainless Steel Swagelok Tube Fitting, Male Connector, 1/8 in. Tube OD x 1/4 in. Male ISO Parallel Thread, Straight Shoulder | Male Connectors | Tube Fittings and Adapters | Fittings | All Products | Swagelok
Screw Thread Tolerances & Profiles - RoyMech
ISO Metric Threads
Hydraulic port for fitting G1 1/4 | Hänchen
Internal British ISO Pipe Threads (Whitworth Form) Table per. BS EN ISO 228