Ground Joint Couplings
Ground joint fittings are ideal for semi-permanent air hose attachments. These parts include a swivel hex nut with internal female threads. Also commonly known as "hammerlock" fittings.

1-1/4" Hammer Lock Ground Joint
- Fits 1-1/4" ID air hose
- Includes swivel hex nut with internal female threads
- Plated steel material

1-1/2" Hammer Lock Ground Joint
- Fits 1-1/2" ID air hose
- Includes swivel hex nut with internal female threads
- Plated steel material

3" Hammer Lock Ground Joint
- Fits 3" ID air hose
- Includes swivel hex nut with internal female threads
- Plated iron material

2" Hammer Lock Ground Joint
- Fits 2" ID air hose
- Includes swivel hex nut with internal female threads
- Plated iron material