API sucker rod coupling, class T

1)Type: full size class T coupling /slim hole  class T coupling

2)Material: seamless alloy steel AISI 5I40

3)Standard: API Spec 11B

4)Smoothness: 3.1×10-3

5) Hole rate: 2%

6)Basic Hardness: HRC 16-23

7)Coupling diameter5/8",3/4 ",7/8".11-1/8"

8)Main specification of 7/8" SHT sucker rod coupling

    Weight : 0.52kg

    O.D. :1-5/8"( 41.3mm)

    Length : 4in( 101.6mm)