INGCO AKSDS80402 3-Piece HSS4341 Step Drill Bit Set 4-12 / 4-20 / 4-32mm Hex Shank

INGCO AKSDS80402 – 3-Piece HSS4341 Step Drill Bit Set with Hex Shank

The INGCO AKSDS80402 is a professional 3-piece HSS4341 step drill bit set for drilling clean, burr-free holes in sheet metal, thin stainless steel (INOX), aluminium, plastics, and timber. All three bits feature a hex shank for quick-change compatibility with impact drivers and drill chucks. The titanium-coated HSS4341 steel construction delivers superior hardness, heat resistance, and long service life. The 2mm step increments allow precise hole sizing without requiring pilot holes or multiple drill changes. Packed in double blister.

What’s in the Set

• 1x Step Drill Bit: 4–12mm – 2mm steps – Hex Shank – 5 steps
• 1x Step Drill Bit: 4–20mm – 2mm steps – Hex Shank – 9 steps
• 1x Step Drill Bit: 4–32mm – 2mm steps – Hex Shank – 15 steps

Key Features

• HSS4341 Material – High-speed steel with cobalt content for superior hardness, toughness, and heat resistance
• Titanium (TiN) Coating – Reduces friction, increases surface hardness, and extends bit life compared to uncoated HSS
• Hex Shank – Quick-change compatible with impact drivers, drill chucks, and hex bit holders
• 2mm Step Increments – Drill precise hole sizes from 4mm to 32mm without pilot holes or multiple bit changes
• Clean Hole Edges – Step geometry produces clean, burr-free holes in sheet metal and thin materials
• No Pilot Hole Required – Self-starting tip drills directly into sheet metal without centre punching
• 3-Piece Set – Covers 4–32mm in a single set for a full range of hole sizes

Applications

• Electrical panel and switchboard knockouts
• Sheet metal and thin plate hole drilling
• Thin stainless steel (INOX) drilling
• Aluminium and copper sheet drilling
• Plastic enclosure and junction box drilling
• Cable conduit entry hole drilling
• Automotive bodywork and chassis drilling

Specifications

• Model: AKSDS80402
• Brand: INGCO
• Set Contents: 3 Step Drill Bits
• Material: HSS4341 (Titanium Coated)
• Shank Type: Hex
• Step Increment: 2mm per step
• Bit 1: 4–12mm (5 steps)
• Bit 2: 4–20mm (9 steps)
• Bit 3: 4–32mm (15 steps)
• Packaging: Double Blister