(30)An all purpose coupling, the female ground joint consists of a MALE STEM, WING NUT and FEMALE SPUD. The Quick Connect x Female Industrial Quick Connect Air Coupler female spud has NPT threads to accept the NPT threads of a rigid connection or male NPT nipple. Widely used Quick Connect x Female Industrial Quick Connect Air Coupler for air, water or steam, the ground joint is secured with an interlocking clamp./Asset/a1708.jpg