Description
Overview:
The Sealey HSS 4341 Step Drill Bit Set, Part No. AK4746, is a 3‐piece double‐flute set for clean, accurate hole-making across multiple diameters with a single bit. Manufactured from high‐speed steel (HSS 4341) for dependable wear resistance, each step drill covers a range of sizes, delivering a total of eighteen different hole options. The double straight flutes improve chip evacuation and help prevent clogging in thin materials. Supplied in a robust flip‐up metal case for organised storage and quick selection, the set suits cordless drills and corded pillar drills in the workshop or on site. Ideal for sheet metals, aluminium, brass, laminates, and plastics, the AK4746 offers a compact, efficient solution for tradespeople, maintenance teams, and DIY users who need versatile hole sizing without frequent bit changes.
Key Features:
- Made from durable HSS 4341 for long service life and consistent cutting performance
- Three step drills provide a combined eighteen hole sizes for versatile use
- Double straight flutes for smooth cutting, fast swarf clearance, and reduced clogging
- Steps help to round and tidy hole edges as you progress through sizes
- Minimises bit changes, saving time on repetitive or varied drilling tasks
- Performs well in sheet metals, non‐ferrous metals, plastics, and laminates
- Suitable for handheld drills and pillar drills with appropriate speed control
- Flip‐up metal storage case keeps bits protected and easy to access
- Clearly stepped profiles aid controlled enlargement of existing holes
- Compact set is easy to carry for on‐site repairs and installations
Typical Applications:
Creating and enlarging holes in electrical panels, HVAC ducting, junction boxes, vehicle bodywork, brackets, and sheet fabrications. Useful for fitting grommets, cable glands, switches, and conduit. Handy for workshop maintenance, fabrication, assembly, and light installation work in metal and plastics.
Also known as:
Cone drill, unibit, tapered hole cutter, ladder bit, graduated drill, multi‐step cutter, sheet‐metal hole enlarger, step cone cutter.
Product Specifications
L&S Part No. | SEAAK4746 |
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Manufacturer | Sealey |
OEM No. | AK4746 |
Unit of Sale | 1 |
Size | Height: 159mm x Width: 109mm x Depth: 35mm |