API square Kelly drill pipe/ AISI 4145H Mod square kelly for oil mining/ 5 1/4" NC56 square Kelly

Nom Size (in)

Top Connection(LH)

Bottom Connection

I.D.(in)

Drive Section(in)

Standard O.D.(in)

Optional O.D.(in)

Square O.D.(in)

Hex. O.D.(in)

Square

Hex.

A

B

2 1/2

6 5/8REG 7 3/4

4 1/2REG 5 3/4

NC26 85.7

1 1/4

3 2/7

3

6 5/8REG 7 3/4

4 1/2REG 5 3/4

NC31 4 1/8

NC26 3 3/8

1 3/4

1 1/4

4

3 3/8

3 1/2

6 5/8REG 7 3/4

4 1/2REG 5 3/4

NC38 4 3/4

NC31 4 1/8

2 1/4

1 3/4

4 1/2

4

4 1/4

6 5/8REG 7 3/4

4 1/2REG 5 3/4

NC46 6 1/4

NC38 4 3/4

2 4/5

2 1/4

5 4/7

4 4/5

6 5/8REG 7 3/4

4 1/2REG 5 3/4

NC50 6 3/8

NC38 4 3/4

2 4/5

2 1/4

5 4/7

4 4/5

5 1/4

6 5/8REG 7 3/4

5 1/2FH 7

NC46 6 1/4

3 1/4

3

7

6

6 5/8REG 7 3/4

NC56 7

NC50 6 3/8

3 1/4

3 1/4

7

6

6

6 5/8REG 7 3/4

5 1/2FH 7

3 1/2

6 4/5

6 5/8REG 7 3/4

NC56 7

3 1/2

6 4/5