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Efficient Counterbore Technique for Socket Head Cap Screws

This guide provides step-by-step instructions on counterboring holes for socket head cap screws to lie flush or below the surface. It includes safety precautions, screw and drill size selection, tool inspection, cutting speed adjustment, and screw insertion. Useful for woodworking, metalworking, and DIY projects. Purchase tools from reliable suppliers like MSC and McMaster. 8 Relevant

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Efficient Counterbore Technique for Socket Head Cap Screws

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  1. COUNTERBORES (Cabinet #3) Table 1 Purpose: Counterbore the hole for socket head cap screw to lie flush or below surface. Safety: The operator should not wear gloves, jewelry. Procedure: Select Screw Size –Table1 and Fig 1 Select Pilot Drill to screw size –Table 1 Drill through hole to pilot size, oil liberally – Fig 2 Select counterbore to screw size –Table 1 Inspect tool for jagged edge - Seek mentor if jagged Set counterbore cutting speed on mill, drill press, or lathe using cutting speed chart Select head depth to screw size –Table 1 Cut counterbore to head depth, oil adequately – Fig 3 Deburr hole Insert Screw – Fig 4 Purchasing: Msc: 1-800-645-7270 www.mscdirect.com McMASTER: 1-562-692-5911 www.mcmaster.com Fig 1 Fig 2 Fig 3 Fig 4

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