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EX21 Steam Tempered UNC:
No.4 - 12, 1/4 - 1 inch
| Unit of Measurement | Imperial |
| Thread Form | UNC - Unified Coarse |
| Tap Application | Blind Hole |
| Number of Flutes | 4 |
| Applications | P - Steel and cast steel |
| Cutting Direction | Right |
| Tap Chamfer Style | C 2 - 3 |
| Standards | DIN 2184-1 |
| Shank | Cylindrical Shank with Square |
| Product Series | EX21 |
| Material | HSS-E-PM |
| Finish | Steam Tempered |
| Application | Steel and Cast Steel |
| Flute Geometry (FDC) | Spiral Flute Geometry |
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