For screws that are really seized up, first spay with a solvent or heat up. Extractor pins are
manufactured from high grade materials and should be kept straight and not heated.
Chart for using Guide Bush
No.
Φ1 Dia. O.D.
Φ1 Dia. O.D.
Φ2 Dia. O.D.
Φ2 Dia. O.D.
G1
9/32”
7.14
1/8”
3.175
G2
5/16”
7.94
1/8”
3.175
G3
11/32”
8.73
1/8”
3.175
G4
3/8”
9.53
1/8”
3.175
G5
13/32”
10.32
3/16”
4.76
G6
7/16”
11.11
3/16”
4.76
G7
15/32”
11.91
3/16”
4.76
G8
1/2”
12.70
3/16”
4.76
G9
17/32”
13.49
1/4”
6.35
G10
9/16”
14.29
1/4”
6.35
Operation
1. Select correct size drill and drill guide bushing for the job.
2. Place drill guide bushing over screw that is being extracted. Use the selected HSS drill bit
and drill smaller hole into damaged screw.
3. Drive in the extractor pin without damaging previouslly drilled hole. Slide correct size
extractor nut onto the extractor pin and unscrew using a wrench.
4. For sunken or protruding broken screws see chart below for assistance in selecting correct
guide bush size.
CANNON TOOLS LTD
Add: 20 station road, Rowley Regis, west midlands,B65 0JU.U.K.
Made in China
Bolt Size ”
Bolt Size
mm
Drill Size
Extractor
Pin Size
Nut Size
Wrench
Size
3/16”
5mm
1/8”
Size 1
Size N1
Wr. 3/8”
1/4”
6mm
1/8”
Size 1
Size N1
Wr. 3/8”
9/32”
7mm
3/16”
Size 2
Size N2
Wr. 7/16”
5/16”
8mm
3/16”
Size 2
Size N2
Wr. 7/16”
11/32”
9mm
1/4”
Size 3
Size N3
Wr. 1/2”
3/8”
10mm
1/4”
Size 3
Size N3
Wr. 1/2”
7/16”
12mm
5/16”
Size 4
Size N4
Wr. 9/16”
1/2”
14mm
11/32”
Size 5
Size N5
Wr. 5/8”
9/16”
16mm
11/32”
Size 5
Size N5
Wr. 5/8”
