Jerax tools 1/2" Single Size M35 Step Drill Bit Unibit for Hole Drilling | M35 Cobalt HSS; Double Spiral Flutes; Long Tool Life; for Drilling Small Holes on Stainless Steel, Metal, Wood, Plastic — Bits & Drilling product photo
Jerax tools 1/2" Single Size M35 Step Drill Bit Unibit for Hole Drilling | M35 Cobalt HSS; Double Spiral Flutes; Long Tool Life; for Drilling Small Holes on Stainless Steel, Metal, Wood, Plastic — additional product viewJerax tools 1/2" Single Size M35 Step Drill Bit Unibit for Hole Drilling | M35 Cobalt HSS; Double Spiral Flutes; Long Tool Life; for Drilling Small Holes on Stainless Steel, Metal, Wood, Plastic — additional product viewJerax tools 1/2" Single Size M35 Step Drill Bit Unibit for Hole Drilling | M35 Cobalt HSS; Double Spiral Flutes; Long Tool Life; for Drilling Small Holes on Stainless Steel, Metal, Wood, Plastic — additional product viewJerax tools 1/2" Single Size M35 Step Drill Bit Unibit for Hole Drilling | M35 Cobalt HSS; Double Spiral Flutes; Long Tool Life; for Drilling Small Holes on Stainless Steel, Metal, Wood, Plastic — additional product viewJerax tools 1/2" Single Size M35 Step Drill Bit Unibit for Hole Drilling | M35 Cobalt HSS; Double Spiral Flutes; Long Tool Life; for Drilling Small Holes on Stainless Steel, Metal, Wood, Plastic — additional product viewJerax tools 1/2" Single Size M35 Step Drill Bit Unibit for Hole Drilling | M35 Cobalt HSS; Double Spiral Flutes; Long Tool Life; for Drilling Small Holes on Stainless Steel, Metal, Wood, Plastic — additional product view
Bits & Drilling

Jerax tools 1/2" Single Size M35 Step Drill Bit Unibit for Hole Drilling | M35 Cobalt HSS; Double Spiral Flutes; Long Tool Life; for Drilling Small Holes on Stainless Steel, Metal, Wood, Plastic

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The Jerax tools 1/2" Single Size M35 Step Drill Bit is a precision unibit engineered for drilling clean, accurate small holes in stainless steel, metal, wood, and plastic. Forged from premium M35 cobalt high-speed steel and finished with a Titanium Aluminum Nitride (TiAlN) surface hardening treatment, the bit delivers extended tool life and superior heat resistance compared with average HSS step bits. Its double spiral flute design clears chips efficiently for smoother, faster, and cleaner cuts, while the unique incremental head design allows a quick and fast drilling start — making it an excellent choice for pilot holes as well as finished holes. Polished steps with clearly highlighted size markings let you read the target hole size mid-drill, so you can keep working without stopping to check. The 1/4-inch hex shank fits impact drivers, drills, and quick-change chucks for fast swaps on the job. With high-accuracy CNC processing and several optimized design details refined over years of production, this single-size 1/2" step bit cuts easy, fast, and clean, outperforming average unibits on the market. Brand: Jerax tools; Size: Single Size 1/2" (2 Flutes); Material: M35 Cobalt HSS; Finish: Titanium Aluminum Nitride (TiAlN); Cutting Diameter: 0.5 in; Shank Type: 1/4" Hex; Flutes: Double Spiral (2); Application: Stainless steel, metal, wood, plastic; ASIN: B0CGCWL1QX.

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Choosing Bits & Drilling

How do I choose driver bits?

Match the bit tip to the fastener recess exactly — Phillips, Torx, square, or hex — because a loose fit strips the fastener. For impact drivers, use impact-rated bits (typically S2 steel) that withstand concussive loads; standard bits can snap. A magnetic bit holder keeps fasteners in place for one-handed driving.

When do I need a step drill bit?

Step bits drill a range of hole sizes in thin material like sheet metal, electrical boxes, and plastic, deburring as they cut. They are not a substitute for twist bits in thick steel, where a dedicated drill bit is more efficient. Choose a step range that covers the hole sizes you actually need.