API Specification 5B
1. 8 Round Casing Plug & Ring Gauges
- Short Thread Casing (STC)
- Long Thread Casing (LTC)
2. Line Pipe Plug & Ring Gauges
3. 8 Round & 10 Round Tubing Plug & Ring Gauges
- External-Upset Tubing (EUT) (EUE)
- Non-Upset Tubing (NUT) (NUE)
4. Buttress Casing Plug & Ring Gauges
5. Extreme Line Casing Plug & Ring Gauges
API Specification 7-2
1. Preferred Connections
- Regular Rotary (REG) Plug & Ring Gauges
- Numbered Connection (NC) Plug & Ring Gauges
- Full Hole (FH) Plug & Ring Gauges
- Internal Flush (IF) Plug & Ring Gauges
2. Line Pipe Plug & Ring Gauges
3. Non-Preferred Connections
- American Open Hole (AOH) Plug & Ring Gauges
- PAC Plug & Ring Gauges
- Hughes Slim Hole (SH) Plug & Ring Gauges
- Hughes Xtra Hole (XH) Plug & Ring Gauges
- Hughes H-90 (H-90) Plug & Ring Gauges
- Hughes Slimline H-90 (SL H90) Plug & Ring Gauges
- Hughes External Flush (HEF) Plug & Ring Gauges
- Misc. Connections
4. Mod. ACME & Mod. Square Plug & Ring Gauges
5. Special premium threads made specifically to customer requirements.