| Part Number | Part Name | Approximate Wt. | |
| Lbs. | Kg. | ||
| H043 | Bit Shank, 3-Blade | 1.9 | .86 |
| H142 | Locking Bowl | 1.4 | .63 |
| H341 (not shown) |
3-Blade Reaming Stabilizer (slip-on, friction-held, no threads). Reamers should conform to bit blade size. (Not to be used when using connectors with breakout lugs) | 2.7 | 1.22 |
| H241-0012 | 23/8" Mayhew Regular Tool Joint Box Connector with breakout lugs | 6.6 | 2.99 |
| H241-0014 | 23/8" Failing Exploration Tool Joint Box Connector with breakout lugs | 6.7 | 3.04 |
| H241-1614 | 23/8" Failing CFD-1 16" (406.4mm) Length Tool Joint Box Connector with breakout lugs | 14 | 6.35 |
| H241-1314 | 23/8" Failing CFD-2 13" (330.2mm) Lenght Tool Joint Box Connector with breakout lugs | 13 | 5.90 |
| H242-0001 | 23/8" A.P.I. Regular Tool Joint Pin Connector with breakout lugs | 11 | 4.99 |
| H241-0011 | Mayhew Junior Tool Joint Box Connector with breakout lugs | 6.6 | 2.99 |
| H243-0069 | Carey Midget Tool Joint Box Connector* | 2.9 | 1.31 |
| H243-0045 | 3-Thread N-Rod Box Connector* | 3 | 1.36 |
| H243-0039 | 4-Thread N-Rod Box Connector* | 3 | 1.36 |
The Series DB-400 bits with blade sizes from 231/32" (75.4mm) through 4¼" (108mm) designed to be used on light or medium weight drilling equipment which normally employs N-rods 23/8 O.D. (60.3mm) or equivalent sizedrill pipe. For larger pipe, it is recommended that Type AC-600 bits be used.
| Blade Size | Approximate Wt. - Box of 12 Sets | ||||
| Inches | mm | Rock Cutter 3-Blade | Carbide Insert 3-Blade | ||
| Lbs. | Kg. | Lbs. | Kg. | ||
| NX (231/32)* | 75.4 | 36 | 16.3 | 36 | 16.3 |
| 3* | 76.2 | 36 | 16.3 | 36 | 16.3 |
| 31/8 | 79.4 | 36 | 16.3 | 36 | 16.3 |
| 3¼* | 82.5 | 38 | 17.2 | 38 | 17.2 |
| 33/8 | 85.7 | 38 | 17.2 | 38 | 17.2 |
| 3½* | 88.9 | 40 | 18.1 | 40 | 18.1 |
| 35/8 | 92.1 | 40 | 18.1 | 40 | 18.1 |
| 3¾* | 95.2 | 40 | 18.1 | 40 | 18.1 |
| 37/8 | 98.4 | 40 | 18.1 | 40 | 18.1 |
| 4* | 101.6 | 42 | 19 | 42 | 19 |
| 41/8 | 104.8 | 42 | 19 | 42 | 19 |
| 4¼* | 108 | 42 | 19 | 42 | 19 |
