- Alpa Metrology FA286 (FA28612A)- Manufacturer: Alpa
 - Threaded rings NPT ALPA FA286 Conical thread. Variation: FA28612A | Ø and pitch: 1/2" - 14 Pontoglio, Italy
- Alpa Metrology FA285 (FA28514)- Manufacturer: Alpa
 - Threaded plug NPT ALPA FA285 Conical thread. Variation: FA28514 | Ø and pitch: 1/4" - 18 Pontoglio, Italy
- Alpa Metrology FA285 (FA285112)- Manufacturer: Alpa
 - Threaded plug NPT ALPA FA285 Conical thread. Variation: FA285112 | Ø and pitch: 1" 1/2 - 11,5 Pontoglio, Italy
- Alpa Metrology FA285 (FA2851)- Manufacturer: Alpa
 - Threaded plug NPT ALPA FA285 Conical thread. Variation: FA2851 | Ø and pitch: 1" - 11,5 Pontoglio, Italy
- Alpa Metrology FA285 (FA2852)- Manufacturer: Alpa
 - Threaded plug NPT ALPA FA285 Conical thread. Variation: FA2852 | Ø and pitch: 2" - 11,5 Pontoglio, Italy
- Alpa Metrology FA285 (FA2853)- Manufacturer: Alpa
 - Threaded plug NPT ALPA FA285 Conical thread. Variation: FA2853 | Ø and pitch: 3" - 8 Pontoglio, Italy
- Alpa Metrology FA280 (FA280118)- Manufacturer: Alpa
 - NO GO threaded rings GAS ISO 228 ALPA FA280 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA280 (FA280214)- Manufacturer: Alpa
 - NO GO threaded rings GAS ISO 228 ALPA FA280 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA280 (FA280212)- Manufacturer: Alpa
 - NO GO threaded rings GAS ISO 228 ALPA FA280 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA280 (FA280234)- Manufacturer: Alpa
 - NO GO threaded rings GAS ISO 228 ALPA FA280 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA275 (FA275212)- Manufacturer: Alpa
 - GO threaded rings GAS ISO 228 ALPA FA275 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA275 (FA27558)- Manufacturer: Alpa
 - GO threaded rings GAS ISO 228 ALPA FA275 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA275 (FA2752)- Manufacturer: Alpa
 - GO threaded rings GAS ISO 228 ALPA FA275 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA265 (FA2651213)- Manufacturer: Alpa
 - NO GO threaded rings UNC ALPA FA265 In hardened steel. Tolerance 2A. Pontoglio, Italy
- Alpa Metrology FA265 (FA2651420)- Manufacturer: Alpa
 - NO GO threaded rings UNC ALPA FA265 In hardened steel. Tolerance 2A. Pontoglio, Italy

