| 
   
 | 
| 
 STANDARD SIZE FOR SQUARE KELLY  
 | 
 | 
 
| 
 Size (in) 
 | 
 Length (ft) Top upset joint 
 | 
 Bottom upset 
 | 
 Bore 
 | 
 Drive Section 
 | 
 Weight 
 | 
   
 | 
 
| 
 A 
 | 
 B 
 | 
 LH 
 | 
 OD C (in) 
 | 
 RH 
 | 
 OD (in) 
 | 
 E (in) 
 | 
 F (in) 
 | 
 G (in) 
 | 
 (Ib) 
 | 
   
 | 
 
| 
   
 | 
   
 | 
   
 | 
 
| 
 2 1/2 
 | 
 40 
 | 
 37 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 2 3/8 IF 
 | 
 3 3/8 
 | 
 1 1/4 
 | 
 3 1/4 
 | 
 2 1/2 
 | 
 902 
 | 
   
 | 
 
| 
   
 | 
 46 
 | 
 43 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 2 3/8 IF 
 | 
 3 3/8 
 | 
 1 1/4 
 | 
 3 1/4 
 | 
 2 1/2 
 | 
 1023 
 | 
   
 | 
 
| 
 3 
 | 
 40 
 | 
 37 
 | 
 6 5/8" Reg 
 | 
 Apr-73 
 | 
 2 7/8IF 
 | 
 4 1/8 
 | 
 1 3/4 
 | 
 3 7/8 
 | 
 3 
 | 
 1089 
 | 
   
 | 
 
| 
   
 | 
 46 
 | 
 43 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 2 7/8IF 
 | 
 4 1/8 
 | 
 1 3/4 
 | 
 3 7/8 
 | 
 3 
 | 
 1232 
 | 
   
 | 
 
| 
 3 1/2 
 | 
 40 
 | 
 37 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 3 1/21F 
 | 
 4 3/4 
 | 
 2 1/4 
 | 
 4  7/16 
 | 
 3 1/2 
 | 
 1320 
 | 
   
 | 
 
| 
   
 | 
 46 
 | 
 43 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 3 1/21F 
 | 
 4 3/4 
 | 
 2 1/4 
 | 
 4  7/16 
 | 
 3 1/2 
 | 
 1474 
 | 
   
 | 
 
| 
   
 | 
 54 
 | 
 51 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 3 1/21F 
 | 
 4 3/4 
 | 
 2 1/4 
 | 
 4  7/16 
 | 
 3 1/2 
 | 
 1716 
 | 
   
 | 
 
| 
 4 1/4 
 | 
 40 
 | 
 37 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 4 IF 
 | 
 6 
 | 
 2 13/16 
 | 
 5 1/2 
 | 
 4 1/4 
 | 
 1815 
 | 
   
 | 
 
| 
   
 | 
 46 
 | 
 43 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 4 IF 
 | 
 6 
 | 
 2 13/16 
 | 
 5 1/2 
 | 
 4 1/4 
 | 
 2068 
 | 
   
 | 
 
| 
   
 | 
 54 
 | 
 51 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 4 IF 
 | 
 6 
 | 
 2 13/16 
 | 
 5 1/2 
 | 
 4 1/4 
 | 
 2354 
 | 
   
 | 
 
| 
 5 1/4 
 | 
 40 
 | 
 37 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 NC50 
 | 
 7 
 | 
 3 1/4 
 | 
 6 7/8 
 | 
 5 1/4 
 | 
 2750 
 | 
   
 | 
 
| 
   
 | 
 46 
 | 
 43 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 NC50 
 | 
 7 
 | 
 3 1/4 
 | 
 6 7/8 
 | 
 5 1/4 
 | 
 3146 
 | 
   
 | 
 
| 
   
 | 
 54 
 | 
 51 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 NC50 
 | 
 7 
 | 
 3 1/4 
 | 
 6 7/8 
 | 
 5 1/4 
 | 
 3674 
 | 
   
 | 
 
| 
 6 
 | 
 40 
 | 
 37 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 6 5/8 FH 
 | 
 8 
 | 
 3 1/2 
 | 
 7 5/8 
 | 
 6 
 | 
 3674 
 | 
   
 | 
 
| 
   
 | 
 46 
 | 
 43 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 6 5/8 FH 
 | 
 8 
 | 
 3 1/2 
 | 
 7 5/8 6 
 | 
 6 
 | 
 4224 
 | 
   
 | 
 
| 
   
 | 
 54 
 | 
 51 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 6 5/8 FH 
 | 
 8 
 | 
 3 1/2 
 | 
 7 5/8 
 | 
 6 
 | 
 4950 
 | 
   
 | 
 
 
 
 | 
 
 
| 
   
 | 
| 
 STANDARD SIZE FOR HEX KELLY  
 | 
 | 
 
| 
 Size 
(in) 
 | 
 Length (ft) 
 | 
 Top upset joint 
 | 
 Bottom upset 
 | 
 Bore 
 | 
 Drive Section 
 | 
 Weight 
(lb)   
 | 
 | 
 
| 
 A 
 | 
 B 
 | 
 LH 
 | 
 OD C (in) 
 | 
 RH 
 | 
 OD (in) 
 | 
 E (in) 
 | 
 F (in) 
 | 
 G (in) 
 | 
 | 
 
| 
 3 
 | 
 40 
 | 
 37 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 2 3/8IF 
 | 
 3 3/8 
 | 
 1 1/2 
 | 
 3 3/8 
 | 
 3 
 | 
 990 
 | 
 | 
 
| 
   
 | 
 46 
 | 
 43 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 2 3/8IF 
 | 
 3 3/8 
 | 
 1 1/2 
 | 
 3 3/8 
 | 
 3 
 | 
 1100 
 | 
 | 
 
| 
 3 1/2 
 | 
 40 
 | 
 37 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 2 7/8IF 
 | 
 4 1/8 
 | 
 1 3/4 
 | 
 4 15/16 
 | 
 3 1/2 
 | 
 1276 
 | 
 | 
 
| 
   
 | 
 46 
 | 
 43 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 2 7/8IF 
 | 
 4 1/8 
 | 
 1 3/4 
 | 
 4 15/16 
 | 
 3 1/2 
 | 
 1474 
 | 
 | 
 
| 
   
 | 
 54 
 | 
 51 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 2 7/8IF 
 | 
 4 1/8 
 | 
 1 3/4 
 | 
 4 15/16 
 | 
 3 1/2 
 | 
 1716 
 | 
 | 
 
| 
 4 1/4 
 | 
 40 
 | 
 37 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 3 1/21F 
 | 
 4 3/4 
 | 
 2 1/4 
 | 
 4 25/32 
 | 
 4 1/4 
 | 
 1650 
 | 
 | 
 
| 
   
 | 
 46 
 | 
 43 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 3 1/21F 
 | 
 4 3/4 
 | 
 2 1/4 
 | 
 4 25/32 
 | 
 4 1/4 
 | 
 1848 
 | 
 | 
 
| 
   
 | 
 54 
 | 
 51 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 3 1/21F 
 | 
 4 3/4 
 | 
 2 1/4 
 | 
 4 25/32 
 | 
 4 1/4 
 | 
 2156 
 | 
 | 
 
| 
 5 1/4 
 | 
 40 
 | 
 37 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 4 IF 
 | 
 6 
 | 
 213/16 
 | 
 5 29/32 
 | 
 5 1/4 
 | 
 2244 
 | 
 | 
 
| 
   
 | 
 46 
 | 
 43 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 4 IF 
 | 
 6 
 | 
 2 13/16 
 | 
 5 29/32 
 | 
 5 1/4 
 | 
 2574 
 | 
 | 
 
| 
   
 | 
 54 
 | 
 51 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 4 IF 
 | 
 6 
 | 
 2 13/16 
 | 
 5 29/32 
 | 
 5 1/4 
 | 
 2970 
 | 
 | 
 
| 
 6 
 | 
 40 
 | 
 37 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 4 1/2IF 
 | 
 7 
 | 
 3 1/2 
 | 
 6 13/16 
 | 
 6 
 | 
 2904 
 | 
 | 
 
| 
   
 | 
 46 
 | 
 43 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 4 1/2IF 
 | 
 7 
 | 
 3 1/2 
 | 
 6 13/16 
 | 
 6 
 | 
 3300 
 | 
 | 
 
| 
   
 | 
 54 
 | 
 51 
 | 
 6 5/8" Reg 
 | 
 7 3/4 
 | 
 4 1/21F 
 | 
 7 
 | 
 3 1/2 
 | 
 6 13/16 
 | 
 6 
 | 
 3894 
 | 
 | 
 
 
 
 | 
 
 
 
 
  
  
  
OD: 4 3/4, 5 5/16, 6 5/8, 7, 7 1/4, 7 3/4, 8 inch. The body is made of a single piece of forged AISI 4145 H modified alloy steel, full treated to 285-341 Brinell Hardness and 40 ft-lb   |