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| Hexagonal Kelly |
Specifications - Hexagonal Kelly
| Nom. Size |
Available Lengths (A) |
Top Upset |
Bottom Upset |
Bore (E) |
Drive Section |
Wt. of 40 ft. Length |
| API Box Left-Hand Conn. |
OD (C) |
Right Hand Conn. |
OD (D) |
Across Corners (F) |
Across Flats (G) |
| (in.) |
(ft.) |
(in). |
(in.) |
(in.) |
(in.) |
(in.) |
(lb.) |
| 3-1/2 |
37, 40, 46 |
6-5/8 REG |
7-3/4 |
NC 31 (2-7/8 IF) |
4-1/8 |
2* |
3.937 |
3-1/2 |
1,300 |
| 4-1/2 REG |
5-3/4 |
1,200 |
| 4-1/4 |
37, 40, 46 |
6-5/8 REG |
7-3/4 |
NC 38 (3-1/2 IF) |
4-3/4 |
2-1/4 |
4.781 |
4-1/4 |
1,740 |
| 5-1/4 |
40, 46, 54 |
6-5/8 REG |
7-3/4 |
NC 46 (4 IF) |
6 - 6-3/8 |
2-13/16 |
5.900 |
5-1/4 |
2,550 |
| NC 50 (4-1/2 IF) |
6-1/8 - 6-3/8 |
3 |
| 6 |
40, 46, 54 |
6-5/8 REG |
7-3/4 |
NC 56 |
7 |
3-1/2 |
6.812 |
6 |
3,040 |
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