- Alpa Metrology FA286 (FA2862A)- Manufacturer: Alpa
 - Threaded rings NPT ALPA FA286 Conical thread. Variation: FA2862A | Ø and pitch: 2" - 11,5 Pontoglio, Italy
- Alpa Metrology FA285 (FA28518)- Manufacturer: Alpa
 - Threaded plug NPT ALPA FA285 Conical thread. Variation: FA28518 | Ø and pitch: 1/8" - 27 Pontoglio, Italy
- Alpa Metrology FA285 (FA28534)- Manufacturer: Alpa
 - Threaded plug NPT ALPA FA285 Conical thread. Variation: FA28534 | Ø and pitch: 3/4" - 14 Pontoglio, Italy
- Alpa Metrology FA285 (FA28512)- Manufacturer: Alpa
 - Threaded plug NPT ALPA FA285 Conical thread. Variation: FA28512 | Ø and pitch: 1/2" - 14 Pontoglio, Italy
- Alpa Metrology FA280 (FA28014)- Manufacturer: Alpa
 - NO GO threaded rings GAS ISO 228 ALPA FA280 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA280 (FA28018)- Manufacturer: Alpa
 - NO GO threaded rings GAS ISO 228 ALPA FA280 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA275 (FA275234)- Manufacturer: Alpa
 - GO threaded rings GAS ISO 228 ALPA FA275 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA280 (FA2802)- Manufacturer: Alpa
 - NO GO threaded rings GAS ISO 228 ALPA FA280 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA275 (FA275118)- Manufacturer: Alpa
 - GO threaded rings GAS ISO 228 ALPA FA275 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA275 (FA275214)- Manufacturer: Alpa
 - GO threaded rings GAS ISO 228 ALPA FA275 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA275 (FA275238)- Manufacturer: Alpa
 - GO threaded rings GAS ISO 228 ALPA FA275 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA275 (FA275114)- Manufacturer: Alpa
 - GO threaded rings GAS ISO 228 ALPA FA275 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA275 (FA2751)- Manufacturer: Alpa
 - GO threaded rings GAS ISO 228 ALPA FA275 Cylindrical thread. Pontoglio, Italy
- Alpa Metrology FA265 (FA265440)- Manufacturer: Alpa
 - NO GO threaded rings UNC ALPA FA265 In hardened steel. Tolerance 2A. Pontoglio, Italy
- Alpa Metrology FA260 (FA260789)- Manufacturer: Alpa
 - GO threaded rings UNC ALPA FA260 In hardened steel. Tolerance 2A. Pontoglio, Italy

