Fukuda Seiko, Japan
Fukuda Seiko CBT Sinking Milling Cutter (for Hexagon Socket Head Bolts) Taper Shank
Made in Japan
Manufacturer: Fukuda Seiko
Model: CBT
Milling cutter for machining sunken holes for hexagon socket head bolts. The nominal dimensions are the same as those of commercially available bolts with holes.
Material: HSS (SKH51)
Number of blades: 4
Guide diameter tolerance: 0 to -0.05
Blade diameter tolerance: 0 to +0.2
Lead angle: Right twist 25°
■ Sinking milling cutter (for hexagon socket head bolts) taper shank
| name | Guide diameter (φD1) | Guide Chief ( 1) | Blade diameter (φD) | Blade length ( ) | Overall length (L) | Shank (MT) |
| Ten | 10.3 | 12 | 16.8 | 16 | 101.5 | MT1 |
| 12 | 12.4 | 14 | 18.8 | 18 | 106.5 | |
| 14 | 14.4 | 16 | 24 | 20 | 110.5 | |
| 16 | 16.5 | 18 | 26 | 22 | 130.5 | MT2 |
| 18 | 18.5 | 20 | 28 | 24 | 134.5 | |
| 20 | 21 | 22 | 30 | 26 | 138.5 | |
| 22 | 23 | 24 | 32 | 28 | 142.5 | |
| 24 | 25 | 26 | 36 | 32 | 170 | MT3 |
| 30 | 31.5 | 32 | 45 | 38 | 182 | |
| 36 | 37.5 | 39 | 53 | 44 | 196 | |
| 42 | 44 | 45 | 59 | 52 | 210 | |
| 45 | 47 | 48 | 64 | 55 | 243 | MT4 |
| 48 | 50 | 51 | 67 | 58 | 249 |
■ Sinking milling cutter (for hexagon socket head bolts) taper shank (inch size)
| name | Guide diameter (φD1) | Guide Chief ( 1) | Blade diameter (φD) | Blade length ( ) | Overall length (L) | Shank (MT) |
| 3/8″ | 9.8 | 12 | 15 | 16 | 101.5 | MT1 |
| 1/2″ | 13.2 | 14 | 20 | 18 | 106.5 | |
| 5/8″ | 16.5 | 18 | 26 | 22 | 130.5 | MT2 |
| 3/4″ | 20 | 22 | 29 | 26 | 138.5 | |
| 7/8″ | 23 | 24 | 32 | 28 | 142.5 | |
| 1″ | 26.5 | 26 | 37 | 32 | 170 | MT3 |
| 1.1/4″ | 33 | 32 | 49 | 42 | 187 | |
| 1.1/2″ | 40 | 39 | 57 | 50 | 202 | |
| 1.3/4″ | 46 | 48 | 64 | 56 | 244 | MT4 |
| 2″ | 53 | 51 | 70 | 62 | 253 |
