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The CENTURY DRILL TOOL CO INC 97321 is an M12 x 1.75 metric plug-style tap designed for hand cutting internal threads in metal and other machinable materials. The tap features precision-cut threads that are accurately formed to produce consistent, exact threading on every pass. Heat treated and tempered to a file-hard finish, the cutting edges hold up through repeated use and maintain thread accuracy over the life of the tool. This is a two-piece package, making it a practical choice for shops and field tradespeople who want a backup on hand. Plumbers, HVAC technicians, electricians, and general trade professionals who regularly cut metric threads will find this tap sized for common M12 fastener applications.
The 97321 is intended for hand-cutting applications where a tap wrench or T-handle driver is used to drive the tap by hand. M12 x 1.75 is a standard coarse-pitch metric thread size used widely in mechanical assemblies, equipment mounting hardware, HVAC brackets, panel enclosures, and plumbing fixture hardware. This tap is suited for threading new holes or cleaning up damaged threads in existing tapped bores across residential and light commercial trade work.
Designed as a hand-cutting metric plug tap for use with standard tap wrenches and T-handle drivers accepting appropriate shank sizes for M12 taps.
This tap is designed for hand-cutting use only and should not be run in a power drill or driver without appropriate speed control and tap holder. Always secure the workpiece firmly before tapping and apply cutting oil to the tap and hole to reduce friction and improve thread quality. Back the tap off periodically to break chips and prevent binding. Follow applicable shop safety practices when working with cutting tools.
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