• Flute：2-Flute Design, Straight Flute
• Shank：Round , 3-Flat , Hex
• Finish：Silver , Titanium Coating , Tialn Coating
• Transport Package：Double Blister
• Specification：See the table below
• Trademark：OEM available
• Origin：China
• HS Code：8205100000
• Production Capacity：50, 000 Pieces , Month

Basic Info.

Flute 2-Flute Design, Straight Flute Shank Round / 3-Flat / Hex Finish Silver / Titanium Coating / Tialn Coating Transport Package Double Blister Specification See the table below Trademark OEM available Origin China HS Code 8205100000 Production Capacity 50, 000 Pieces / Month

Product Description

Step drills are used for:
1.  Sheet metal working in electrical, sanitary engineering, heating technologies, automotive, mechanical engineering, switching systems and aviation
2. Non-ferrous metal, steel, stainless steel, themoplastics, duroplastics, sheet metals up to 0.16" (8 gauge) thick
3. Center, spot-drill, bore and debur, all in one operation

Feature:
1. CBN ground flutes without burrs mean a superior cutting edge an longer tool life
2. Each step has a radially adjusted relief produced by CBN grinding, relating directly to the diameter of the step, so the cutting edge is always the highest point of the diameter
3. Each step is axially CBN relief-ground, meaning the cutting edge is also the highest point of the axial cutting axis
4. The cutting edge of each step has relief angle, meaning the cutting edge is alos the highest point in advance direction


Sizes available:

Size (mm)	Overal length (mm)	Steps	Shank (mm)
3-12	66.5	10	6
4-12	66.5	9	6
4-20	75	9	8
4-22	72	10	8
4-30	100	14	10
6-30	93	13	10
6-20	72	8	8
6-38	100	12	10
4-32	89	15	10
5-35	78	13	10
6-37	100	12	10
6-38	100	10	10
6-40	105	16	12
5-28	69	7	10
4-39	107	13	10
5-28.3	72	10	10
7-40.5	110	7	10