Alpha HSS Screw Extractor No.4 - 8.33mm

The Alpha HSS Screw Extractor is engineered for professional bolt and screw removal where precision and control are critical. Featuring a reverse tapered cutting thread and a square drive head, this tool is ideal for use with standard tap wrenches, providing reliable anti-clockwise extraction.

Manufactured from high-speed steel for toughness and wear resistance, it is suitable for removing broken studs, screws and bolts in automotive, industrial, and general maintenance settings. Five common sizes are available to suit a range of pilot drill and bolt diameters.

FEATURES:

• Reverse tapered cutting thread – delivers controlled anti-clockwise extraction
• Square head – compatible with standard tapping handles
• High-Speed Steel (HSS) – durable and long-lasting
• 5 standard sizes available – covers a wide bolt range

SPECIFICATIONS:

• Extractor Size: No.4
• Cutting Diameter: 8.33mm
• Compatible Pilot Drill Size: 6.35mm (1/4")
• Compatible Bolt Thread Diameter: 10.0–12.0mm (3/8"–1/2")
• Material: High-Speed Steel
• Drive Type: Square Head
• Manufacturers Code: 9SE04
• Sold as: Each

BEST APPLICATIONS:

• Broken bolt and screw removal
• Automotive, machinery, and general maintenance
• Precision extraction without damage to surrounding material

DIRECTIONS FOR USE:

1. If possible, grind or flatten the head of the damaged bolt or screw.
2. Use a heavy hammer and centre punch to mark the centre – this prevents drill wandering.
3. Drill a pilot hole using a small left-hand drill bit (e.g. 1/4").
4. If needed, enlarge the pilot hole using a left-hand drill to aid loosening.
5. Insert the appropriate Alpha Screw Extractor.
6. Turn anti-clockwise using a tap wrench until the extractor bites and the stud is released.

Find the Alpha Metal Drilling Data Sheets HERE

Not what you are looking for, or need specialty tools? Please give us a call on 0800 080 4657 or email us on [email protected]. We are here to help.