Hughes Christensen Drill Bit Catalog
Hughes Christensen Drill Bit Catalog
Hughes Christensen Drill Bit Catalog
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ROCK BIT SIZES & TYPES<br />
Steel Tooth <strong>Bit</strong>s<br />
in. mm API<br />
PIN<br />
DR/R ATJ GT GTX ATMGT MAXGT STR MX LB. KG.<br />
3 3 /4 95.2 2 3 /8 DR5 10 4.5<br />
3 7 /8 98.4 2 3 /8 DR5 10 4.5<br />
4 1 /8 104.8 2 3 /8 DR5 STR-1 11 5.0<br />
4 5 /8 117.5 2 7 /8 DR5 STR-1 16 7.3<br />
4 3 /4 120.6 2 7 /8 DR5 ATJ-4 STR-1 16 7.3<br />
5 7 /8 149.2 3 1 /2 ATJ-4 STR-1 29 13.2<br />
6 152.4 3 1 /2 ATJ-4 GT-1 STR-1 30 13.6<br />
6 1 /8 155.6 3 1 /2 R7 ATJ-4 GT-1 STR-1 30 13.6<br />
6 1 /4 158.7 3 1 /2 GT-1 STR-1 30 13.6<br />
6 1 /2 165.1 3 1 /2 GT-1 STR-1 31 14.1<br />
6 3 /4 171.4 3 1 /2 GT-1 STR-1 45 20.4<br />
7 7 /8 200 4 1 /2 ATJ-G4 GT-1 GT-G1H MX-1 73 33.1<br />
8 3 /8 212.7 4 1 /2 GTX-G3 86 39.0<br />
8 1 /2 215.9 4 1 /2 R7 ATJ-G8 GT-1 GT-G1 GTX-G3 MX-1 86 39.0<br />
8 3 /4 222.2 4 1 /2 ATJ-G4 GT-1 GT-G1 MX-1 90 40.8<br />
9 1 /2 241.3 6 5 /8 GT-1 ATM-GT3 130 58.9<br />
9 7 /8 250.8 6 5 /8 GT-1 GT-G1 MX-1 137 62.1<br />
10 5 /8 269.9 6 5 /8 GT-1 159 72.1<br />
11 279.4 6 5 /8 R1 GT-1 165. 74.8<br />
12 1 /4 311.1 6 5 /8 R1 R7 ATJ-G8 GT-1 GT-G1 GTX-1 GTX-G1 MAX-GT1 MX-1 211 95.7<br />
GTX-G3<br />
MAX-GT3<br />
13 1 /2 342.9 6 5 /8 R1 GTX-1 231 104.8<br />
13 3 /4 349.3 6 5 /8 R1 GTX-1 269 122.0<br />
14 1 /2 368.3 7 5 /8 GTX-1 296 134.08<br />
14 3 /4 374.6 7 5 /8 R1 GTX-1 GTX-G1 MAX-GT1 305 138.3<br />
GTX-G3<br />
16 406.4 7 5 /8 GTX-1 GTX-G1 MAX-GT1 MAX-GT3 485 220.0<br />
17 1 /2 444.5 7 5 /8 R1 GTX-1 GTX-G1 MAX-GT1 568 257.6<br />
GTX-3<br />
MAX-GT3<br />
20 508.0 7 5 /8 R1 685 310.7<br />
22 558.8 7 5 /8 R1 GTX-G1 1133 514.0<br />
23 584.2 7 5 /8 R1 1155 524.0<br />
24 609.6 7 5 /8 R1 GTX-G1 1245 564.7<br />
26 660.4 7 5 /8 R1 R3 GTX-G1 1280 580.6<br />
HUGHES CHRISTENSEN 11
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