For Autoblock, Howa, Kitagawa, Matsumoto, Shunk.
| Manufacturer Part Number | 491316 |
| Jaw Type | Square |
| Material | Steel |
| Jaw Interface Type | 1.5x60 Degree |
| Maximum Compatible Chuck Diameter (Inch) | 8" |
| Minimum Compatible Chuck Diameter (Inch) | 8" |
| Minimum Compatible Chuck Diameter (mm) | 210mm |
| Overall Height (mm) | 40mm |
| Groove Width (mm) | 14mm |
| Distance Between Mount Hole Centers (mm) | 25mm |
| Number of Jaws | 3 |
| Model Number | HKM.21.01/S |
| Fastener Size (mm) | 13mm |
| Overall Length (mm) | 95mm |
| Product Type | Soft Lathe Chuck Jaw |