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Product Specifications
| Manufacturer Part Number | BT657 |
| Diameter (Decimal Inch) | 0.7087" |
| Diameter (mm) | 18.00mm |
| Overall Length (Decimal Inch) | 4.0300" |
| Overall Length (mm) | 102.36mm |
| Thread Length (Decimal Inch) | 0.7870" |
| Thread Length (mm) | 19.99mm |
| Square Length (Decimal Inch) | 0.6300" |
| Square Length (mm) | 16.00mm |
| Shank Diameter (Decimal Inch) | 0.5420" |
| Shank Diameter (mm) | 13.77mm |
| Square Size (Decimal Inch) | 0.4060" |
| Square Size (mm) | 10.31mm |
| Neck Diameter (Decimal Inch) | 0.5300" |
| Neck Diameter (mm) | 13.46mm |
| Drill Size (Decimal Inch) | 0.6192" |
| Drill Size (mm) | 15.73mm |
| Useable Length (Decimal Inch) | 2.2050" |
| Useable Length (mm) | 56.01mm |
| Thread Diameter (Inch) | M18 |
| Threads Per Inch | 2.5 TPI |
| Number of Flutes | 4 |
| Pitch Limit | D7 |
| Series | BT |
| Helix Angle | 45 Degree |
| Thread Series | M |
| Chamfer Type | Modified Bottoming |
| Chamfer Length | 2P-3P |
| Finish | Hardslick |
| Material | HSSE-V3 |
| Blank Standard | 302A |
| Length/Diameter | 2.5xD |
| Shank Type | Square |
| Tap Type | Spiral Flute Tap |
Warning:
This product can expose you to materials and/or chemicals including arsenic, lead, and other materials and/or chemicals which are known to the state of California to cause cancer and/or reproductive harm.
For more information, visit www.P65Warnings.ca.gov
