China 5 PCS Damaged Bolt and Broken Screw Extractor Set, Find details about China Broken Screw Extractor, Damaged Screw Extractor from 5 PCS Damaged Bolt and Broken Screw Extractor Set
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A screw extractor is a tool used expressly for removing broken or seized screws.
There are two types;
one has a spiral flut structure, which is commonly known by the trademarked name Easy Out;
the other has a straight flute structure.
The tools are made of very hard, brittle steel; they can break off inside the screw if too much torque is applied, making the removal much more difficult.
1. Spiral flutes are designed to embed themselves deeper into the metal as you turn the tool, so as the fastener resistance increases, the extractor's grip increases
2. Extractor size and recommended drill bit size are etched on each tool.
3. Designed to remove broken studs, bolts, socket screws, and fittings
4. Aggressive left hand spiral design for extra gripping power
5. High speed drill bit ensures fast, clean drilling
Model of Making: Full Ground Or Roll Forged
Material: High Speed Steel or S2
H.S.S Grade | Chemical Composition(%) |
4241 | W:1.50-2.50; Mo:0.60-1.20; Cr:3.80-4.40; V:0.50-0.70 |
4341 | W:3.50-4.50; Mo:2.50-3.50; Cr:.3.80-4.40; V:1.20-1.80 |
99341 | W:8.50-9.50; Mo:2.70-3.30; Cr:.3.80-4.40; V:1.30-1.70 |
6542(M2) | W:5.50-6.75; Mo:4.50-5.50; Cr:.3.80-4.40; V:1.75-2.20 |
M35 | W:6.00-6.70; Mo:4.70-5.20; Cr:.3.80-4.50; V:1.70-2.00; Co:4.50-5.50 |
M42 | W:1.15-1.85; Mo:9.00-10.0; Cr:.3.50-4.25; V:0.95-1.35; Co:7.75-8.75 |