Thread Plug & Ring
Fixed Limit Thread Plug (Ring) Gauges
- M Metric Thread : ISO 6H & 6g (JIS B0251)
- W British Standard Thread : II (class) III (class)
- UNC Unified Coarse Thread (ANSI B1.2-2A 2B)
- UNF Unified Fine Thread (ANSI B1.2-2A 2B)
- UNEF Unified Extra Fine Thread (ANSI B1.2-2A 2B)
- UNS Unified Special Thread (2A 2B)
- BC Bicycle : JIS B0225
- SM Sewing Machine : JIS II (class) (JIS B0226)
- PS British Standard Parallel Pipe Thread : JIS B0254
- PF Parallel Pipe Thread : A(JIS B0254 (Annex). DIN259.ISO228 (Reference))
American Standard Taper Pipe Thread Gauges
- NPSM American Standard Parallel Pipe Thread : 2B 2A (ANSI B2.1)
- NPT American Standard Taper Pipe Thread Gauges : ANSI B2.1
- NPTF (3-Step) : ANSI B1.20.5 American Standard Dry Seal Taper Pipe Thread Ring Gauges
- NPTF (3-Step) : ANSI B1.20.5 American Standard Dry Seal Taper Pipe Thread Plug Gauges
- NPTF (6-Step) : ANSI B1.20.5 American Standard Dry Seal Taper Pipe Thread Ring Gauges
- NPTF (6-Step) : ANSI B1.20.5 American Standard Dry Seal Taper Pipe Thread Plug Gauges
