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Craftics 5/16 Plas-Drill Bit. These drill bits for plastic produce clean, chip-free holes in acrylic and other plastics excellent for hand drills. No chipping, no cracking, no grabbing, no melting. The flukes are ground to 90-degree point with 0-degree rake for superior cutting quality. 4.5 overall length. ENGINEERED FOR CLEAN CUTS IN PLASTIC — Specially ground drill bit designed to cut acrylics, Plexiglas, Lexan, ABS, PVC, and more without cracking, chipping, or melting. The unique geometry reduces heat buildup and stress fractures common with standard metal drill bits, delivering smooth, clean holes in brittle plastics every time. PRECISION 5/16 SIZING — This 5/16-inch drill bit is precision-ground to deliver accurate, consistent hole diameters in plastic sheet materials. Compatible with standard hand drills and drill presses, making it accessible for hobbyists, fabricators, and professionals alike. Lightweight and easy to handle for controlled, accurate drilling. VERSATILE FOR FABRICATION, SIGNAGE & DISPLAYS — Ideal for drilling mounting holes in display cases, retail signage, protective barriers, enclosures, and custom fabrication projects. Works across a wide range of plastic materials including acrylic, polycarbonate, ABS, and PVC — perfect for DIY projects and professional shop use. WORKS WITH STANDARD HAND DRILLS — No special equipment required. This plastic-specific drill bit is compatible with any standard hand drill or drill press. For best results, use moderate speed with light pressure and allow the bit to do the work — reducing heat and preventing stress cracks for a professional-quality finish. PRECISION TOLERANCES & QUALITY — Dimensions held to +/- 0.010 ensuring consistent, precise fit for fabrication and engineering applications. Manufactured under ISO 9001:2015 certified quality management standards for reliable material quality on every order. UPC 040041160271 Model 1106027 Brand Name Craftics Shank Type Straight Unit Count 1.0 Count Part Number 1106027 Point Style Diamond Point Finish Types Diamond Manufacturer Craftics Material Type Alloy Steel Item Dimensions 4.5 x 0.31 x 0.31 inches Tool Flute Type Spiral Cutting Diameter 0.31 Inches Number of Flutes 1 Number of Pieces 1 Cutting Angle String 90 Degrees Surface Recommendation Plastic