Product categories
- AIR MACHINE ACCESSORIES, FITTINGS AND VAC REPLACEMENT PARTS
- HYDRAULIC HOSE FERRULES - FERRULES MANUFACTURER
- INDUSTRIAL AND AUTOMITIVE COUPLERS & CONNECTORS
- PNEUMATIC BLOW GUN KITS AND BLOW GUN PRODUCTS
- PNEUMATIC HOSES
- PNEUMATIC, AUTOMOTIVE HOSE CRIMPERS AND DIES
- TIRE INFLATOR CHUCKS AND AIR FITTINGS
- TIRE INFLATOR GAUGE PRODUCTS
- Uncategorized
- VALVES PARTS PRODUCTS
- WATER BIBBS AND UTILITY WATER NOZZLES
Top rated products

1/2" FPT Couplers & Connectors – 1/2" MPT Connectors
1/2" FPT couplers & connectors and 1/2" MPT connectors are ideal for joining and fitting pipe fixtures within low-pressure liquid or air applications. They identify a pipe thread’s connector type (male or female) for an application. At Diamond-U, we carry a complete line of 1/2" FPT couplers and 1/2" MPT connectors you can use in all your maintenance, repair, and metalworking applications.
Why Choose Diamond-U's Automotive Standard ½" Series Couplers & Connectors?
Diamond-U has established an outstanding reputation as the premier manufacturer in the pneumatic and automatic sector. We have provided innovative techniques and high-quality couplers and connectors for over a century.
Whether you need a single connector to fit your application or want to purchase several units, we can process your order fast and efficiently. In addition, if you need a custom solution for your metalworking, we can create a piece that suits your specific needs.
FPT vs. MPT
FPT (Female Pipe Thread) is a female coupler of a thread used when making MPT fittings, whereas MPT (Male Pipe Thread) is a male coupler used when making FPT connections with NPT (National Pipe Thread) threads.
1/2" FPT couplers & connectors and 1/2" MPT connectors are hardened steel couplers, heat-treated to minimize wear on major mating surfaces. They can sustain a maximum temperature of 250 °F, an air circulation of 40 standard cubic feet /minute, and an inlet pressure limit of 300 pounds/square inch.
Types of 1/2" FPT Couplers & Connectors – 1/2" MPT Connectors that Diamond-U offers include;
- 1/2" Female Connector
- 1/2" Coupler 3/8" FPT
- 1/2" Connector 3/8 MPT
- 1/2" Female Coupler
- 1/2" Male Connector
Get Top Quality Connectors and Couplers at Diamond-U
Ready to buy? Shop our ½" FPT couplers and connecters and ½" MPT couplers and connectors today. If you would like a wholesale quote or want a custom product, contact us here, and a sales representative will get back to you!