

HSS Counterbore Cutter Straight Shank CB
HSS Counterbore Cutter Straight Shank CB is a high-speed steel (HSS) form milling cutter, made in Japan.
Specifications (17 items)
| Part No. | Screw size | Dia. | Major dia. | Flute length | Usable length | Overall length | Shank dia. | Flutes |
|---|---|---|---|---|---|---|---|---|
| AVTWCCB0670 | M3 | 3.2 | 5.9 | 7 | 3 | 37 | 6 | 4 |
| AVTWCCB0660 | W1/8" | 3.4 | 6.2 | 6 | 3 | 38 | 6 | 4 |
| AVTWCCB07100 | M4 | 4.2 | 7.4 | 10 | 4 | 44 | 6 | 4 |
| AVTWCCB09100 | W3/16" | 4.96 | 8.7 | 10 | 5 | 51 | 6 | 4 |
| AVTWCCB09130 | M5 | 5.2 | 8.9 | 13 | 5 | 51 | 6 | 4 |
| AVTWCCB10150 | M6 | 6.2 | 10.4 | 15 | 6 | 58 | 8 | 4 |
| AVTWCCB11140 | W1/4" | 6.55 | 11 | 14 | 6 | 58 | 8 | 4 |
| AVTWCCB13160 | M8 | 8.2 | 13.4 | 16 | 8 | 67 | 10 | 4 |
| AVTWCCB14160 | W5/16" | 8.25 | 14 | 16 | 8 | 67 | 10 | 4 |
| AVTWCCB15160 | W3/8" | 9.8 | 15 | 16 | 9 | 73 | 12 | 4 |
| AVTWCCB17160 | M10 | 10.3 | 16.8 | 16 | 10 | 74 | 12 | 4 |
| AVTWCCB19200 | M12 | 12.4 | 18.8 | 20 | 12 | 83 | 12 | 4 |
| AVTWCCB20200 | W1/2" | 13.2 | 20 | 20 | 13 | 83 | 12 | 4 |
| AVTWCCB24200 | M14 | 14.4 | 24 | 20 | 14 | 90 | 12 | 4 |
| AVTWCCB26220 | M16 | 16.5 | 26 | 22 | 16 | 100 | 16 | 4 |
| AVTWCCB28240 | M18 | 18.5 | 28 | 24 | 18 | 104 | 16 | 4 |
| AVTWCCB30260 | M20 | 21 | 30 | 26 | 21 | 109 | 16 | 4 |
Specification Range
| Diameter | 3.2~21mm |
|---|---|
| Large diameter | 5.9~30mm |
| Flute length | 6~26mm |
| Effective length | 3~21mm |
| Overall length | 37~109mm |
| Shank diameter | 6~16mm |
Product Description
HSS Counterbore Cutter Straight Shank CB is a high-speed steel (HSS) form milling cutter, made in Japan. Specifications range from screw sizes M3~M20 & W1/8"~W1/2", pilot diameter 3.2~21mm, flute length 6~26mm, effective length 3~21mm, overall length 37~109mm, 4 flutes. Maximum workpiece hardness up to HRC30. Suitable for: P (structural/carbon/alloy steel, <HRC30); N (non-ferrous, aluminum, copper, brass, plastic). Main application: counterboring (recessing screw heads flush). In the same EIKO family: CBLS (long shank, overall length 120~200mm), CBT (taper shank, M16~M30), CB JM (JIS sizes, HSS-CO) and the carbide-tipped CCB; to drill and counterbore in one step without a pre-drilled hole, choose the DCB counterbore drill. Do I need to pre-drill? Yes, the pilot guides in a pre-drilled hole; it is used for socket head cap screw counterbores. What is the largest screw size? M20 and W1/2"; for larger sizes see CBT.
Workpiece Materials & Hardness
- Steel (P)
- Non-ferrous metals (N)
Max. workpiece hardness HRC30
Tags
- Counterbore
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