Osg 2392305 Spiral Flute Tap M12x1.75 3 Flutes Tin Hss

Product Description

The OSG 2392305 is a spiral flute tap designed for cutting M12x1.75 metric coarse internal threads in a wide range of materials. Built from vanadium high-speed steel with a titanium nitride (TiN) coating, this tap delivers extended tool life in demanding production and maintenance environments. The modified bottoming chamfer allows threading closer to the bottom of blind holes than a standard plug tap. With a 45-degree helix angle and three right-hand flutes, it evacuates chips efficiently during tapping operations. Overall length is 110 mm (4.33 inches). This tap is typically installed by machinists, tool-and-die technicians, and maintenance mechanics working on metal fabrication or repair tasks.

The OSG 2392305 is suited for threading operations in both production shops and field maintenance settings. Its 6H class of fit meets standard tolerance requirements for general-purpose metric fastener applications. The tap is rated for use in alloy steel, aluminum, carbon steel, cast iron, die steel, hardened steel, and stainless steel, making it a versatile choice when a single tap must handle multiple workpiece materials. Coolant-through capability supports high-speed or deep-hole tapping where chip evacuation and heat control are priorities.

Key Features

• M12x1.75 metric coarse thread form, 6H class of fit for standard tolerance applications
• Modified bottoming chamfer for threading near the bottom of blind holes
• 45-degree helix angle with 3 right-hand spiral flutes for efficient chip evacuation
• Vanadium high-speed steel construction for toughness and wear resistance
• TiN coating reduces friction and extends tool life across multiple materials
• Coolant-through design supports high-speed and deep-hole tapping

Compatibility

Designed for cutting M12x1.75 metric coarse internal threads in alloy steel, aluminum, carbon steel, cast iron, die steel, hardened steel, and stainless steel workpieces.

Installation Notes

This tap is installed by machinists or maintenance mechanics using a tapping machine, CNC machining center, or hand tap wrench with appropriate torque control. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct tap drill diameter for M12x1.75 before beginning. Cutting fluid or coolant should be applied consistently throughout the tapping cycle to protect both the tool and the workpiece. Inspect the tap for wear or chipping before each use and replace if flute edges show visible degradation.