Center Drill Bit
Center Drill Bit (Combined Drill & Countersink) is a precision tool for creating accurate center holes in workpieces. Available in DIN333 metric and ANSI/ASME B94.11 imperial standards. Type A features compact body for light/medium machining. Type B offers larger body diameter and countersink for enhanced stability and heavy-duty applications including deeper holes and larger drill pre-positioning. HSS standard, HSS-E/Carbide available.
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Specifications
37 SKUs| Cart+ | SKU | Price | Quantity | Total | Body Diameter D | Drill Diameter d | Drill Length l | Total Length L | Drill Diameter d1 | FIG |
|---|---|---|---|---|---|---|---|---|---|---|
A-HSS-1 | $2 | $0 | 3.15 mm | 1 mm | 1.3 mm | 31.5 mm | - | Fig.1 | ||
A-HSS-1.25 | $2.5 | $0 | 3.15 mm | 1.25 mm | 1.6 mm | 31.5 mm | - | Fig.1 | ||
A-HSS-1.6 | $2.5 | $0 | 4 mm | 1.6 mm | 2 mm | 35.5 mm | - | Fig.1 | ||
A-HSS-2 | $3 | $0 | 5 mm | 2 mm | 2.5 mm | 40 mm | - | Fig.1 | ||
A-HSS-2.5 | $3 | $0 | 6.3 mm | 2.5 mm | 3.1 mm | 45 mm | - | Fig.1 | ||
A-HSS-3.15 | $3.5 | $0 | 8 mm | 3.15 mm | 3.9 mm | 50 mm | - | Fig.1 | ||
A-HSS-4 | $4 | $0 | 10 mm | 4 mm | 5 mm | 56 mm | - | Fig.1 | ||
A-HSS-5 | $4 | $0 | 12.5 mm | 5 mm | 6.3 mm | 63 mm | - | Fig.1 | ||
A-HSS-6.3 | $4.5 | $0 | 16 mm | 6.3 mm | 8 mm | 71 mm | - | Fig.1 | ||
A-HSS-8 | $5 | $0 | 20 mm | 8 mm | 10 mm | 80 mm | - | Fig.1 | ||
B-HSS-1 | $2 | $0 | 4 mm | 1 mm | 1.3 mm | 35.5 mm | 2.12 mm | Fig.2 | ||
B-HSS-1.25 | $2.5 | $0 | 5 mm | 1.25 mm | 1.6 mm | 40 mm | 2.65 mm | Fig.2 | ||
B-HSS-1.6 | $2.5 | $0 | 6.3 mm | 1.6 mm | 2 mm | 45 mm | 3.35 mm | Fig.2 | ||
B-HSS-2 | $3 | $0 | 8 mm | 2 mm | 2.5 mm | 50 mm | 4.25 mm | Fig.2 | ||
B-HSS-2.5 | $3 | $0 | 10 mm | 2.5 mm | 3.1 mm | 56 mm | 5.3 mm | Fig.2 | ||
B-HSS-3.15 | $3.5 | $0 | 11.2 mm | 3.15 mm | 3.9 mm | 60 mm | 6.7 mm | Fig.2 | ||
B-HSS-4 | $4 | $0 | 14 mm | 4 mm | 5 mm | 67 mm | 8.5 mm | Fig.2 | ||
B-HSS-5 | $4 | $0 | 18 mm | 5 mm | 6.3 mm | 75 mm | 10.6 mm | Fig.2 | ||
B-HSS-6.3 | $4.5 | $0 | 20 mm | 6.3 mm | 8 mm | 80 mm | 13.2 mm | Fig.2 | ||
B-HSS-8 | $5 | $0 | 25 mm | 8 mm | 10.1 mm | 100 mm | 17 mm | Fig.2 | ||
A-HSS-0I | $2 | $0 | 1/8" | 1/32" | 0.038" | 1-1/8" | - | Fig.1 | ||
A-HSS-1I | $2.5 | $0 | 1/8" | 3/64" | 3/64" | 1-1/4" | - | Fig.1 | ||
A-HSS-2I | $2.5 | $0 | 3/16" | 5/64" | 5/64" | 1-7/8" | - | Fig.1 | ||
A-HSS-3I | $3 | $0 | 1/4" | 7/64" | 7/64" | 2" | - | Fig.1 | ||
A-HSS-4I | $3.5 | $0 | 5/16" | 1/8" | 1/8" | 2-1/8" | - | Fig.1 | ||
A-HSS-5I | $4 | $0 | 7/16" | 3/16" | 3/16" | 2-3/4" | - | Fig.1 | ||
A-HSS-6I | $4 | $0 | 1/2" | 7/32" | 7/32" | 3" | - | Fig.1 | ||
A-HSS-7I | $4.5 | $0 | 5/8" | 1/4" | 1/4" | 3-1/4" | - | Fig.1 | ||
A-HSS-8I | $5 | $0 | 3/4" | 5/16" | 5/16" | 3-1/2" | - | Fig.1 | ||
B-HSS-11I | $2 | $0 | 1/8" | 3/64" | 0.10" | 1-1/4" | 0.1" | Fig.2 | ||
B-HSS-12I | $2.5 | $0 | 3/16" | 1/16" | 0.15" | 1-7/8" | 0.15" | Fig.2 | ||
B-HSS-13I | $3 | $0 | 1/4" | 3/32" | 0.20" | 2" | 0.20" | Fig.2 | ||
B-HSS-14I | $3.5 | $0 | 5/16" | 7/64" | 0.25" | 2-1/8" | 0.25" | Fig.2 | ||
B-HSS-15I | $4 | $0 | 7/16" | 5/32" | 0.35" | 2-3/4" | 0.35" | Fig.2 | ||
B-HSS-16I | $4 | $0 | 1/2" | 7/32" | 0.50" | 3" | 0.4" | Fig.2 | ||
B-HSS-17I | $4.5 | $0 | 5/8" | 7/32" | 0.50" | 3-1/4" | 0.5" | Fig.2 | ||
B-HSS-18I | $5 | $0 | 3/4" | 1/4" | 0.60" | 3-1/2" | 0.6" | Fig.2 |
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Features
Key product features and specifications that make this product stand out.
DIN333 (Metric) & ANSI/ASME B94.11 (Imperial)
Material: HSS standard, HSS-E/Carbide optional
Type A: compact body, smaller countersink entry
Type A: ideal for light to medium machining ops
Type B: larger body diameter with countersink
Type B: enhanced stability and load-bearing rigidity
Type B: deeper holes, larger drill pre-position
60° included angle for universal applications
Combined drill and countersink function in one tool
Size designated by drill tip diameter (d) value
Metric 1-8 mm / Imperial #0-#8, #11-#18 size range
Lathe centering, CNC, and pilot hole positioning
Technical Drawing
Detailed technical specifications and dimensions for professional reference.
