Sucker Rod Coupling Class T

Nominal Size

5/8 in.

3/4 in.

7/8 in.

1 in.

1-1/8 in.

mm

mm

mm

mm

mm

Full Size Sucker Rod Coupling、Full Size Polished Rod Coupling and Full Size Sub-Coupling

ODªOutsside Dimension

Size

46

Tolerance

-0.01

-0.25

-0.01

-0.25

-0.01

-0.25

-0.01

-0.25

-0.01

-0.25

Size

4

4

4

4

Lª

Length

Tolerance

0

0

0

0

0

0

0

0

0

0

D2ª

Size

Minimum

D3ª;

Size

35

Tolerance

-0.055

-1.39

-0.073

-1.85

-0.073

-1.85

-0.073

-1.85

-0.073

-1.85

BC1ₑ Maximun

Size

Slim Hole Sucker Rod Coupling、Slim Hole Polished Rod Coupling and Slim Hole Sub-Coupling

Size

2

ODª

Outsside Dimension

Tolerance

-0.01

-0.25

-0.01

-0.25

-0.01

-0.25

-0.01

-0.25

Size

4

4

4

4

Lª

Length

Tolerance

0

0

0

0

0

0

0

0

D2ª

Size

Minimum

Size

35

D3ª

Tolerance

-0.035

-0.89

-0.073

-1.85

-0.073

-1.85

-0.073

-1.85

BC1ₑ Maximun

Size

a As shown in figure C.1

b The nominal size of the coupling is the same size as the sucker rod

c Slim hole coupling is the reduces of the outer diameter

d The size of the outer diameter and length shall be determined by the maximum thread size

e See figure c.2. The type is selected by the manufacturer

f For the full size and slim hole diameter coupling of 1 inch L=4.500in.(114.3mm)

g For the full size sub-coupling of 1-1/8 inch L=5.000in.(127.0mm)

Coupling Chemical Component

AISI

C

Si

Mn

P

S

Cr

Ni

Mo

V

Cu

Al

1541

≤0.04

≤0.04

≤0.3

≤0.35

≤0.06

≤0.35

≤0.035

5140

≤0.025

≤0.025

≤0.3

/

/

≤0.2

/

4135

≤0.025

≤0.025

≤0.3

/

≤0.2

/

4120

≤0.025

≤0.025

≤0.3

/

≤0.2

/

Tensile Strength（MPa）

Yield Strength（MPa）

Elongation（%）

Reduction of Area（%）

≥655

≥405

≥16

≥48

Hardness

GRADE T

GRADE SM

56HRA-62HRA

＞595HV200

Hardness

GRADE T

GRADE SM

56HRA-62HRA

＞595HV200