Precision Hinge Drill Bits

Precise Centering – No Misalignment Upgraded Self-Centering Drill Bit Set Eliminate offset errors and crooked hardware installations. The integrated spring-loaded guide structure ensures straight, centered drilling every single time. Centering Accuracy Comparison Our Self-Centering Bit Locks into the center of the hardware eyelet seamlessly. Delivers 100% straight, perfectly aligned holes and screws flush with the metal surface. Ordinary Manual Drill Bits Prone to walking and slipping on metal surfaces. Results in shifting, crooked holes and off-center hardware installation. Engineered Woodworking Features High-Precision Spring & 135° Split Point Features a heavy-duty internal spring that automatically retracts upon drilling depth pressure. The HSS centering tip utilizes a sharp 135° split-point geometry to pierce directly into target center-points without sliding. Automatic Retraction Adjustable Set Screw 1/4" Hex Shank Double-Sided Clog-Free Ports Constructed with dual-sided chip clearing ports. Wood chips are forced upward and fly out from the large openings smoothly, preventing sawdust accumulation and protecting the internal steel core from binding. Clog-Free Ports HSS 4341 Core Continuous Operation Versatile Applications & Sizing A comprehensive set curated to fit standard hardware sizes. Install hinges, drawer runners, base brackets, and wood screws flawlessly. Drawer Slides Designed for #6 screws using the 3/32" self-centering bit. Cabinet Hinges Designed for #8 screws using the 7/64" self-centering bit. Door Hinges Designed for #10 screws using the 1/8" self-centering bit. Technical Specifications Shank Type Standard 1/4" Hex Shank (Quick-Change Compatible) Bit Core Material HSS 4341 High-Speed Steel Housing Material High-Carbon Steel Shell (Matte Gun-Black Finish) 1/8" Bit Dimensions Total Length: 95mm (3.74") 7/64" Bit Dimensions Total Length: 90mm (3.54") 3/32" Bit Dimensions Total Length: 80mm (3.15") Package Includes 3x Self-Centering Drill Bits, 1x L-Wrench Frequently Asked Questions Q: How do I adjust or replace the inner drill core? A: Insert the included L-shape hex wrench into the set screw near the shank head, loosen it to slide out the old bit, insert your new replacement high-speed steel core, and tighten it back up. Q: Are these drill bits compatible with standard drills? A: Yes. These bits utilize a standard universal 1/4" hex shank that is compatible with quick-change chucks, impact drivers, and standard manual drills across DeWalt, Bosch, Makita, and other brands. Q: What range of materials can this HSS core drill? A: The tough heat-treated HSS 4341 inner core is designed to easily bore holes through hardwood, softwood, plywood, MDF, particle board, and even thin aluminum or sheet metal hardware casings.