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Square Kelly Specifications || Hexagonal Kelly Specifications

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Square Kelly Specifications


Specifications - Square 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 37, 40, 46 6-5/8 REG 7-3/4 NC 31 (2-7/8 IF) 4-1/8 2* 3.875 3 1,080
4-1/2 REG 5-3/4 980
3-1/2 37, 40, 46 6-5/8 REG 7-3/4 NC 38 (3-1/2 IF) 5 2-1/4 4.437 3-1/2 1,320
4-1/2 REG 5-3/4
4-1/4 37, 40, 46, 54 6-5/8 REG 7-3/4 NC 46 (4 IF) 6-1/4 2-13/16 5.500 4-1/4 1,820
NC 50 (4-1/2 IF) 6-1/2
5-1/4 40, 46, 54 6-5/8 REG 7-3/4 NC 50
 7 3-1/4 6.750 5-1/4 2,780
6 40, 46, 54 6-5/8 REG 7-3/4 6-5/8 REG 7-3/4 3-1/2 7.625 6 3,700

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