Bright 3-flats Shank Straight Flute HSS Step Drill Bit Set in Plastic Case

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Bright 3-flats Shank Straight Flute HSS Step Drill Bit Set in Plastic Case Technical Specifications
3 flat shank is easy to change ,straight flute allows the material particles escape easily for a much more clean drilling operation.the size include: 4-12mm5steps ,4-20mm 9steps, 4-32mm 13steps. HSS step drill bits for thin metal board,Wood, PVC sheet, Insulation . Not suitable for hard and brittle materials such as stainless steel, glass, tile floors, walls etc

1.It is produced by different kinds of materials, such as HSS 4241, HSS 4341, HSS 6542(M2), HSS M35, HSS M42.
2.Different sizes of the Shank: 1/4″ Hex Shank, 7/8″ Hex Shank, Triangle Shank, Round Shank, Square Shank and so on.
3. It is ideal for drilling thin stainless steel plates, aluminum plates,plastic, wood, non-combustible materials, expanding holes, drilling holes, and processing curved surfaces such as pipes.
4.Since the hole is gradually expanded from a small hole to a large hole, drilling of multiple sizes and expansion of the hole are possible.The bite to the tip of the bamboo shoot drill is also finished to feel better than ordinary drills.
5.Step drills two-flute spiral grooved design is deburrs chip, dust and debris for clearance and smooth cutting.
6.118 degree pointed angle with right hand cutting.

HSS TiN Coated Spiral Flute Step Drill Set – Metric
Step drills are designed for drilling repetitive holes in steel, stainless steel, copper, brass, aluminium, plastic, plexiglas, laminates and many other thin materials.
Manufactured from premium quality high speed steel with double fluted ground cutting edges for long service life.

1.Each bit is constructed of industrial high-speed steel with a titanium nitride coating for durability and strength to punch and drill clean holes in materials like plastic, aluminum, wood, copper, stainless steel, and other types of sheet metal. 3pc Saber Metric HSS TiN Coated Spiral Flute Step Drill Bit Kit

2.The two-flute spiral grooved design deburrs chip, dust and debris for clearance and smooth cutting. With 15 step sizes, each hole made with these step bits will be precise.

3.The 1/4-inch hex shank makes for easy, convenient, and quick stepper bit switches and is compatible with impact ready power tools. 4-12/4-20/6-30mm HSS TiN Coated Step Drill Bits Kit In Wood Box

What is a step drill bit?
A step drill bit allows you to drill different sized holes with a single bit. The bit is cone like shaped, so the further you drill into the material, the wider the hole will get.

It is a very small and handy accessory for any professional tradesmen, and can be used in many applications, especially when drilling through sheet metal. For example, an electrician may use these for drilling the correct size hole in a junction box and panel, or by an automotive technician when carrying out installations and repairs.

Tradesmen love step drill bits as they improve working efficiency as there is no need to change the drill bit to get the correct size hole.

What is a step drill bit used for?
Step drill bits are mainly used to cut holes in metal. They are also used to drill wood, acrylic, and other plastics, but one limiting factor of the step drill bit is that they are only suitable for cutting thin materials, such as sheet metal. The material has to be 5mm thick or thinner for the step drill to be able to drill through it.

The step drill bits can help to both drill holes, and also enlarge current holes. This is because of the shape of the drill bit, allowing it to efficiently enlarge holes to the correct size with the help of the step design.

Step drill bits are great for cutting through plastic, it offers a very smooth cut and finish without damaging the hole or material. They are also great at cutting through thin metal, as it cuts it very smoothly compared to twist drills, and slowly shaves off the metal leaving a smooth beveled edge to the metal.  3pc Metric HSS TiN Coated Spiral Flute Step Drill Kit

We accepted OEM/ODM size, logo, packing

Drill Size
	1MM	2MM	3MM	4MM	5MM	6MM	7MM	8MM	9MM	10MM	11MM	12MM	13MM
STAINLESS STEEL	3182	1591	1061	795	636	530	455	398	354	318	289	265	245
CAST IRON	4773	2386	1591	1193	955	795	682	597	530	477	434	398	367
PLAIN CARBON STEEL	6364	3182	2121	1591	1273	1061	909	795	707	636	579	530	490
BRONZE	7955	3977	2652	1989	1591	1326	1136	994	884	795	723	663	612
BRASS	9545	4773	3182	2386	1909	1591	1364	1193	1061	955	868	795	734
COPPER	11136	5568	3712	2784	2227	1856	1591	1392	1237	1114	1012	928	857
ALUMINIUM	12727	6364	4242	3182	2545	2121	1818	1591	1414	1273	1157	1061	979