Merit 99760 KD3633-1 7in 40-Grit ZYR T27 5/8-11 PowerFlex Flap Disc PK10
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This is a factory-new box of 10 Merit PowerFlex T27 flap discs, part number 99760 (catalog code KD3633-1), featuring 40-grit zirconia alumina (ZYR) abrasive cloth bonded to a fiberglass-reinforced flat (Type 27) backing plate with a zinc die-cast 5/8-11 threaded hub for direct spindle mounting on 7-inch angle grinders without a separate arbor nut. Zirconia alumina grain is a self-sharpening abrasive that fractures under load to continuously expose fresh cutting edges, delivering aggressive, consistent stock removal on carbon steel, structural steel, and stainless steel weld seams, mill scale, and surface defects. The Type 27 flat profile is suited for flat-surface grinding and blending at low approach angles. Maximum rated operating speed is 8,600 RPM as printed on the disc label. Each disc measures 7 inches (178 mm) in diameter; the box label confirms the product description as "7.0 POWERFLEX T27 FIBER 040ZYR 5/8-11 HUB R801," with quantity 10 per case.
Product Specifications
| Brand | Merit |
| Product Line | PowerFlex |
| Part Number (Merit #) | 99760 |
| Catalog / Order Code | KD3633-1 |
| Disc Type | T27 (Flat / Type 27) |
| Disc Diameter | 7 in (178 mm) |
| Abrasive Grain | Zirconia Alumina (ZYR) |
| Grit | 40 |
| Backing | Fiberglass-reinforced fiber plate |
| Arbor / Hub | 5/8-11 threaded hub (zinc die-cast) |
| Max Operating Speed | 8,600 RPM |
| Quantity per Package | 10 |
| Condition | New |