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1)Type: FH class T coupling /SH class T coupling                    

2)Material: High quality Carbon 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 diameter: 5/8", 3/4 ", 7/8". 1", 1-1/8"

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

Weight: 0.52kg

O. D.: 1-5/8"(41.3mm)

Length: 4in(101.6mm)