TOOL JOINT SPECIFICATIONS for STEEL DRILL PIPE

Thread Sizes

SIZE

(Inches)

A

B

C

D

E

F

G

TPI

TPF

 

API Regular

2 3/8

3

3 1/8

2 5/8

1 7/8

2 11/16

3 3/8

1

5

3

2 7/8

3 1/2

3 3/4

3

2 1/8

3 1/16

3 7/8

1 1/4

5

3

3 1/2

3 3/4

4 1/4

3 1/2

2 9/16

3 9/16

4 1/8

1 1/2

5

3

4 1/2

4 1/4

5 1/2

4 5/8

3 9/16

4 11/16

4 5/8

2 1/4

5

3

5 1/2

4 3/4

6 3/4

5 33/64

4 21/64

5 37/64

5 1/8

2 3/4

4

3

6 5/8

5

7 3/4

6

5 5/32

6 1/16

5 3/8

3 1/2

4

2

7 5/8

5 1/4

8 7/8

7

5 11/16

7 1/16

5 5/8

4

4

3

8 5/8

5 3/8

10

7 61/64

6 39/64

8 1/64

5 3/4

4 3/4

4

3

 

API Full Hole

2 7/8

3 1/2

4 1/4

3 5/8

2 3/4

3 11/16

3 7/8

2 1/8

5

3

3 1/2

3 3/4

4 5/8

4

3 1/16

4 3/64

4 1/8

2 7/16

5

3

4

4 1/2

5 1/4

4 9/32

3 17/32

4 11/32

4 7/8

2 13/16

4

2

4 1/2

4

5 3/4

4 51/64

3 51/64

4 7/8

4 3/8

3

5

3

5 1/2

5

7

5 53/64

5

5 29/32

5 3/8

4

4

2

6 5/8

5

8

6 3/4

5 59/64

6 27/32

5 3/8

5

4

2

 

API Internal Flush

2 3/8

3

3 3/8

2 7/8

2 3/8

2 15/16

3 3/8

1 3/4

4

2

2 7/8

3 1/2

4 1/8

3 25/64

2 13/16

3 29/64

3 7/8

2 1/8

4

2

3 1/2

4

4 3/4

4 1/64

3 11/16

4 5/64

4 3/8

2 11/16

4

2

4

4 1/2

5 3/4

4 53/64

4 5/64

4 29/32

4 7/8

3 1/4

4

2

4 1/2

4 1/2

6 1/8

5 1/4

4 1/2

5 5/16

4 7/8

3 3/4

4

2

5 1/2

5

7 3/8

6 25/64

5 9/16

6 29/64

5 3/8

4 13/16

4

2

 

Standard Bit Shank Sizes

PIN SHANK SIZE

API REG

DRILL BIT SIZES

PIN SHANK SIZE API REG

DRILL BIT SIZES

2 3/8

3 3/4 - 4 1/2

6 5/8

9 1/2 - 12 1/4

2 7/8

4 5/8 - 4 7/8

6 5/8 or

7 7/8

13 3/4 -

17 1/2

3 1/2

5 1/8 - 7 3/8

4 1/2

7 1/2 - 9


Why not give us a call today?
Contact George Bourne at Sales@Bournedrill.com.au



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