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COUNTERBORES (Cabinet #3)

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

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COUNTERBORES (Cabinet #3)

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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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