Square Kelly / Hexagonal Kelly

Square Kelly / Hexagonal Kelly

  • Our kellys have been exported to Turkey, Hungary, Singapore and Middle East etc.
  • Kellys are manufactured according to API-7-1 Spec.
  • The kellys are made of AISI 4142H-4145H forged or rolled alloy structural steel

Description

Nom. Size
(in)
Top Connection(LH) Bottom Connection I.D. (in) Drive Section(in)
StandardO.D.(in) OptionalO.D.(in) SquareO.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 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

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