Description
A hand reamer has a longer taper or lead in at the front than a machine reamer. This is to compensate for the difficulty of starting a hole by hand power alone. It also allows the reamer to start straight and reduce the risk of breakage. The flutes may be straight or spiral. Each machine requires a different type and size of reamer. The depth of the hole or surface being also drilled determines the length of the reamer to choose.
Parallel Shank Hand Reamer
How to measure
| Diameter (mm) | Cutting Edge Length | Overall Length |
|---|---|---|
| 3 | 31 | 62 |
| 3.3 | 35 | 71 |
| 4 | 38 | 76 |
| 4.5 | 41 | 81 |
| 5 | 44 | 87 |
| 5.5 | 47 | 93 |
| 6 | 47 | 93 |
| 6.5 | 50 | 100 |
| 7 | 54 | 107 |
| 8 | 58 | 115 |
| 9 | 62 | 124 |
| 10 | 66 | 133 |
| 11 | 71 | 142 |
| 12 | 76 | 152 |
| 13 | 76 | 152 |
| 14 | 81 | 163 |
| 15 | 81 | 163 |
| 16 | 87 | 175 |
| 17 | 87 | 175 |
| 18 | 93 | 188 |
| 19 | 93 | 188 |
| 20 | 100 | 201 |
| 21 | 100 | 201 |
| 22 | 107 | 215 |
| 23 | 107 | 215 |
| 24 | 155 | 231 |
| 25 | 115 | 231 |
| 27 | 124 | 247 |
| 28 | 124 | 247 |
| 29 | 124 | 247 |
| 30 | 124 | 247 |
| 31 | 124 | 247 |
| 32 | 133 | 265 |
| 33 | 133 | 265 |
| 34 | 142 | 284 |
| 35 | 142 | 284 |
| 36 | 142 | 284 |
| 37 | 142 | 284 |
| 38 | 152 | 305 |
| 39 | 152 | 305 |
| 40 | 152 | 305 |
| 41 | 152 | 305 |
| 42 | 152 | 305 |
| 43 | 152 | 305 |
| 44 | 163 | 326 |
| 45 | 163 | 326 |
| 46 | 163 | 326 |
| 47 | 163 | 326 |
| 48 | 174 | 347 |
| 49 | 174 | 347 |
| 50 | 174 | 347 |
| 51 | 174 | 347 |
| 52 | 174 | 347 |
| 53 | 174 | 347 |
| 54 | 174 | 347 |
| 55 | 184 | 367 |
| 56 | 184 | 367 |
| 57 | 184 | 367 |
| 58 | 184 | 367 |
| 59 | 184 | 367 |
| 60 | 184 | 367 |
| 61 | 184 | 367 |
| 62 | 194 | 387 |
| 63 | 194 | 387 |
| 64 | 194 | 387 |
| 65 | 194 | 387 |
| 67 | 194 | 387 |
| 71 | 203 | 406 |
| DIAMETER (INCH) | CUTTER EDGE LENGTH | OVERALL LENGTH |
| 1/8 | 1.5/16 | 2.5/8 |
| 5/32 | 1.1/2 | 3 |
| 3/16 | 1.3/4 | 3.7/16 |
| 7/32 | 1.7/8 | 3.11/16 |
| 1/4 | 2 | 3.15/16 |
| 9/32 | 2.1/8 | 4.3/16 |
| 5/16 | 2.1/4 | 4.1/2 |
| 11/32 | 2.7/16 | 4.7/8 |
| 3/8 | 2.5/8 | 5.1/4 |
| 12/32 | 2.5/8 | 5.1/4 |
| 7/16 | 2.13/16 | 5.5/8 |
| 15/32 | 3 | 6 |
| 1/2 | 3 | 6 |
| 17/32, 9/16 | 3.3/16 | 6.7/16 |
| 19/32, 5/8 | 3.7/16 | 6.7/8 |
| 21/32, 11/16 | 3.11/16 | 7.7/16 |
| 23/32, 3/4 | 3.15/16 | 7.15/16 |
| 13/16 | 3.15/16 | 7.15/16 |
| 7/8 | 4.3/16 | 8.1/2 |
| 15/16 | 4.1/2 | 9.1/16 |
| 1 | 4.1/2 | 9.1/16 |
| 1.1/16, 1.1/8 | 4.7/8 | 9.3/4 |
| 1.3/16 | 5.1/4 | 10.7/16 |
| 1.1/4 | 5.1/4 | 10.7/16 |
| 1.5/16 | 5.1/4 | 10.7/16 |
| 1.3/8, 1.7/16 | 5.5/8 | 11.3/16 |
| 1.1/2 | 6 | 12 |
| 1.9/16 | 6 | 12 |
| 1.5/8 | 6 | 12 |
| 1.3/4 | 6.7/16 | 12.13/16 |
| 1.7/8 | 6.7/8 | 13.11/16 |
| 2 | 6.7/8 | 13.11/16 |
| 2.1/16 | 6.7/8 | 13.11/16 |
| 2.1/8 | 7.1/4 | 14.7/16 |
| 2.3/16 | 7.1/4 | 14.7/16 |
| 2.1/4 | 7.1/4 | 14.7/16 |
| 2.5/16 | 7.1/4 | 14.7/16 |
| 2.3/8 | 7.5/8 | 15.1/4 |
| 2.7/16 | 7.5/8 | 15.1/4 |
| 2.1/2 | 7.5/8 | 15.1/4 |
