No.28M T.C.T. Bolt Filling Bit "Middle Type"
USE
Counter boring for fixed bolt nuts.
FEATURES
- For Counter-boring with the guide bar fitted in the drilled hole.
- Upon changing the guide bar to the drill, counter boring and pre-hole drilling can be done at the same time.
- Shank penetrating type cutter is only available for 50mm cutter size.
Specifications
| Usage | Wood |
|---|---|
| Material(s) | Guide・Drill：High Carbon Steel Cutter：High Carbon Steel with T.C.T. |
| Recommended tool(s) | Electric Power Drill |
| RPm | Less than 1,000～1,500rpm |
| Shank Shape |  ：Hexagon  ：Round |
Sizes
No Drill：Guide×Cutter
Size：D1×D2 Shank Shape：d Unit：mm
| Product No. | Size | Shank Shape |
|---|---|---|
| 28M-1550 ★ | 15X50 | 12 |
| 28M-1555 | 15X55 | 11 |
| 28M-1560 | 15X60 | 11 |
| 28M-1565 | 15X65 | 11 |
| 28M-1850 ★ | 18X50 | 12 |
| 28M-1855 | 18X55 | 11 |
| 28M-1860 | 18X60 | 11 |
| 28M-1865 | 18X65 | 11 |
| 28M-2160 | 21X60 | 11 |
| 28M-2165 | 21X65 | 11 |
| 28M-2460 | 24X60 | 11 |
| 28M-2465 | 24X65 | 11 |
QTY(Inner Box)：1pc
※★：Shaft penetrating type with 50mm cutter
With Drill：Guide×Cutter+Drill
Size：D1×D2 Shank Shape：d Unit：mm
| Product No. | Size | Shank Shape |
|---|---|---|
| 28M-D1550 ★ | 15X50 | 12 |
| 28M-D1555 | 15X55 | 11 |
| 28M-D1560 | 15X60 | 11 |
| 28M-D1565 | 15X65 | 11 |
| 28M-D1850 ★ | 18X50 | 12 |
| 28M-D1855 | 18X55 | 11 |
| 28M-D1860 | 18X60 | 11 |
| 28M-D1865 | 18X65 | 11 |
| 28M-D2160 | 21X60 | 11 |
| 28M-D2165 | 21X65 | 11 |
| 28M-D2460 | 24X60 | 11 |
| 28M-D2465 | 24X65 | 11 |
QTY(Inner Box)：1pc
※★Shaft penetrating type with 50mm cutter
Assembly
Guide
Size：D Overall Length：L Spiral Length：SL Shank Shape：d Unit：mm
| Product No. | Size | Overall Length | Spiral Length | Shank Shape |
|---|---|---|---|---|
| 28M-GK150 ★ | 15 | 150 | 70 | 12 |
| 28M-GK180 ★ | 18 | 150 | 70 | 12 |
| 28M-G150 | 15 | 82 | 60 | 10 |
| 28M-G180 | 18 | 82 | 60 | 10 |
| 28M-G210 | 21 | 82 | 60 | 10 |
| 28M-G240 | 24 | 82 | 60 | 10 |
※★：Shaft penetrating type with 50mm cutter
Drill
Size：D Overall Length：L Spiral Length：SL Shank Shape：d Unit：mm
| Product No. | Size | Overall Length | Spiral Length | Shank Shape |
|---|---|---|---|---|
| 28M-DK150 ★ | 15 | 280 | 170 | 12 |
| 28M-DK180 ★ | 18 | 280 | 170 | 12 |
| 28M-D150 | 15 | 222 | 170 | 10 |
| 28M-D180 | 18 | 222 | 170 | 10 |
| 28M-D210 | 21 | 222 | 170 | 10 |
| 28M-D240 | 24 | 222 | 170 | 10 |
※★：Shaft penerating type with 50mm cutter
Cutter
Size：D Overall Length：L Shank Shape：d Unit：mm
| Product No. | Size | Overall Length | Shank Shape |
|---|---|---|---|
| 28M-C500 ★ | 50 | 36 | - |
| 28M-C550 | 55 | 68 | 11 |
| 28M-C600 | 60 | 68 | 11 |
| 28M-C650 | 65 | 68 | 11 |
※★：Shank penerating Type
Other Assembly
Unit：mm
| Product No. | Name | Size |
|---|---|---|
| 28-OP1 | Screw with Nut | 8X15 |
| 28-OP2 | Wrench | 4 |
Custom Auger Bits
Any Length and any size are available depending on your needs. We can make various Auger Bits to comply with your needs.
Bits of knowledge
- There are two types of cutters, the shank penetrating type and the type with the shank in the cutter. Shank penetrating type cutter is only available for 50mm cutter size. Be careful when choosing the Guide or Drills.
