Kennametal A4SMR2020K0308 20mm x 125.3mm RH Grooving Toolholder
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The Kennametal A4SMR2020K0308 is a new, right-hand external grooving and parting toolholder belonging to Kennametal's A4 clamping system, designed to accept SM-style (Top-Notch) grooving inserts. Decoded from the part number: A4 = Top-Notch A4 clamping system; SMR = right-hand SM insert pocket; 2020 = 20 mm × 20 mm square shank cross-section; K = metric shank; 03 = insert width 3 mm; 08 = insert cutting depth 8 mm. The body is manufactured in the USA from hardened alloy steel with a dark nitride/black oxide surface treatment for corrosion resistance and is 125.3 mm in overall length as confirmed by the package label (W20.0mm L125.3mm). This holder accepts Kennametal Top-Notch SM-style grooving/parting inserts with a 3 mm groove width and up to 8 mm cutting depth, and is compatible with standard 20 mm square shank lathe tool posts and quick-change tooling systems. A Torx clamping wrench is included. Kennametal item number 3854267.
Product Specifications
| Brand | Kennametal |
| MPN | A4SMR2020K0308 |
| Kennametal Item No. | 3854267 |
| Clamping System | A4 Top-Notch |
| Hand of Cut | Right-Hand (R) |
| Insert Style | SM (Top-Notch grooving/parting) |
| Shank Width | 20 mm |
| Shank Height | 20 mm |
| Overall Length (L) | 125.3 mm |
| Insert Groove Width | 3 mm |
| Max Cutting Depth | 8 mm |
| Shank Type | Metric square shank (K) |
| Operation | External grooving, parting |
| Country of Origin | USA |
| Condition | New |
| Includes | Torx clamping wrench |