SERIES DB-400

Blade Sizes 211/32" (75.4mm) through 4" (108mm) for use with air, water or mud

Body Parts - Series DB-400
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
NOTE: Please specify type of connector thread to fit your drill rod, and whether box or pin.

The Series DB-400 bits with blade sizes from 231/32" (75.4mm) through 4" (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.

  *Without lugs
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
3* 82.5 38 17.2 38 17.2
33/8 85.7 38 17.2 38 17.2
3* 88.9 40 18.1 40 18.1
35/8 92.1 40 18.1 40 18.1
3* 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
4* 108 42 19 42 19

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*Popular sizes carried in stock.
Other sizes available on short notice.

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