HSS DIN333A Metal Centre Drill Bit for Rotary Tap / Router 60°
BSW & DIN 333 Standards are manufactured for HSS Center Drills,
HSS Type A Double Sided Center Drills are manufactured in both M2 & M35 grades
Unmatched precise hardness (HRc) to provide long lasting Center Drill life
Grades available HSS M2 (1X) or HSS M35 (2X),
TiN or TiALN coating avaialble on request for all HSS Cutting Tools
OEM ODM
Fast Delivery
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HSS DIN333A Metal Centre Drill Bit for Rotary Tap / Router 60°, Hss Centre Drill A B R Type High Speed Steel For Industrial, HSS Cobalt Center Drill Bit for Centre Drilling, Solid Carbide HSS Central Drill Bit, M2 HSS 60° Angle Center Drill Bits Kit Countersink Tools, Carbide Center Drills, High-Speed Steel Center Drills, Center Drill Countersink Set, Woodworking Metalworking & Multipurpose Drill Bits China Supplier Factory
HSS DIN333A Metal Centre Drill Bit for Rotary Tap / Router 60° Specifications
Drill Type High Speed Steel Center Drill Bit
Shank Type Straight Shank
Diameter 1.0mm-6.0mm
Shank Diameter 3mm-14mm
Total length 33mm-72mm
Point Angle 60° & 120°
Material High Speed Steel 6542
Coated Tin Coating
Use Metal working/Stainless Steel Processing
Machinable Materials Steel, Copper, Aluminum,Stainless steel,Iron,etc
Application Spot drilling
Applicable machine tools CNC machining center,CNC machine tools,engraving machines and other equipment
Feature Positioning, chamfering, sharp and wear-resistant
Centre drill bits are used in metalworking to provide a starting hole for a larger sized drill bit or to make a conical indentation in the end of a workpiece in which to mount a lathe centre.Complies with DIN332 standard.
1.Center drill bits can be used to make conical holes for a lathe center in order to make a starting point for a standard twist drill, designed to prevent the twist drill from walking, as well as for producing center holds in components or work pieces with require machining between centers.
2.Available for all Kinds of Materials: Metal,Alloy, Copper,Iron,Aluminum, and so on.
3.Durable and Resistance: Center drill bit is made of HSS high speed steel, with extremely sharp blade, low consumption and durable with impact resistance, wear resistance. TiN-Coated Centre Drill Bit Set 6-Piece
| Feature | DIN 333A (Type A) | DIN 333B (Type B) | DIN 333R (Type R) |
| Transition Geometry | Chamfered (Bevelled Edge) | Chamfered (Bevelled Edge) | Rounded (Radiused Edge) |
| Flutes / Grooves | 2 Flutes (Twist Drill-like) | No Flutes | 2 Flutes (Twist Drill-like) |
| Pilot Hole | Yes (Creates a small pilot hole) | No | Yes |
| Primary Function | Standard drill start, Creates Centre Hole | Creates Centre Hole without pilot for thin material | Creates Centre Hole *optimized for rotating centres* |
| Typical Use | General purpose starting holes | Centre holes in thin parts (tubes, thin sheet) | Lathe work involving rotating centres (CNC vital) |
Although center drills and spot drills appear similar, their purposes differ. HSS M35 Cobalt Center Drill Bits High Speed Steel
The spot drill is shorter and harder, which reduces bending. It is only used to pre-damage the surface before drilling, serving as a drill bit positioning device.
Center drills are used in high-precision applications, particularly for drilling holes at the center of raw materials to facilitate machining on a lathe.
Understanding these differences can help you make informed decisions based on specific tasks. For example, if you need a tapered drill bit to enhance precision, a center drill would be the better choice. On the other hand, a point drill is the preferred tool for precise and rigid hole-making operations. HSS-CO Center Bits Combined Center Drills 60 Degree
Centre Drill Bits Types
| Type A HSS Center Drill | |||
| d | D | L | I |
| 1.00 | 3.15 | 33.50 | 1.90 |
| 1.25 | 3.15 | 33.50 | 1.90 |
| 1.60 | 4.00 | 37.50 | 2.80 |
| 2.00 | 5.00 | 42.00 | 3.30 |
| 2.50 | 6.30 | 47.00 | 4.10 |
| 3.15 | 8.00 | 52.00 | 4.90 |
| 4.00 | 10.00 | 59.00 | 6.20 |
| 5.00 | 12.50 | 66.00 | 7.50 |
| 6.30 | 16.00 | 74.00 | 9.20 |
| Type B HSS Center Drill | |||
| d | D | L | I |
| 1.00 | 4.00 | 37.50 | 1.90 |
| 1.25 | 5.00 | 42.00 | 2.20 |
| 1.60 | 6.30 | 47.00 | 2.80 |
| 2.00 | 8.00 | 52.00 | 3.30 |
| 2.50 | 10.00 | 59.00 | 4.10 |
| 3.15 | 11.20 | 63.00 | 4.90 |
| 4.00 | 14.00 | 70.00 | 6.20 |
| 5.00 | 18.00 | 78.00 | 7.50 |
| 6.30 | 20.00 | 83.00 | 9.20 |
| Type R HSS Center Drill | |||
| d | D | L | I |
| 1.00 | 3.15 | 33.50 | 3.00 |
| 1.25 | 3.15 | 33.50 | 3.35 |
| 1.60 | 4.00 | 37.50 | 4.25 |
| 2.00 | 5.00 | 42.00 | 5.30 |
| 2.50 | 6.30 | 47.00 | 6.70 |
| 3.15 | 8.00 | 52.00 | 8.50 |
| 4.00 | 10.00 | 59.00 | 10.60 |
| 5.00 | 12.50 | 66.00 | 13.20 |
| 6.30 | 16.00 | 74.00 | 17.00 |
Other specification is also available according to your requirements. (OEM, ODM )
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