Osg 1115710308 Spiral Point Tap M5x0.80 Metric Coarse 6H

Product Description

The OSG 1115710308 is a spiral point tap designed for threading M5x0.80 metric coarse internal threads in demanding materials. Built from powdered metal with a TiCN coating, this plug-chamfer tap handles hardened steel, stainless steel, high-nickel alloys, and titanium where standard HSS taps lose edge life quickly. The 3-flute spiral point geometry pushes chips forward ahead of the cutting zone, making it well suited for through-hole applications. The 6H class of fit and D4 thread limit deliver consistent tolerance control across production runs. Thread length is 7/8 inches, with an overall length of approximately 0.25 inches in shank form and a shank diameter of 0.1940 inches. Machinists and tool-room operators working in CNC or manual environments reach for this tap when material hardness or alloy content rules out standard tooling.

This tap is intended for through-hole threading operations in metals that present high cutting resistance. Typical applications include aerospace and industrial component manufacturing where stainless steel, titanium, and high-nickel alloys are common workpiece materials. The plug chamfer makes it appropriate for starting in a drilled hole and running through to full thread depth. Right-hand cut matches standard spindle rotation. The 344NI series designation identifies this as an OSG tool optimized specifically for nickel-based and difficult-to-machine alloy families, making it a practical choice for shops that regularly process these material grades.

Key Features

• Spiral point geometry pushes chips forward, suitable for through-hole tapping in tough alloys
• TiCN coating increases surface hardness and lubricity, extending tool life in stainless steel and nickel alloys
• Powdered metal substrate provides uniform grain structure for consistent edge strength
• Plug chamfer allows easy thread starting in through-hole applications
• 6H class of fit with D4 thread limit ensures tight tolerance control for metric fastener assemblies
• Right-hand cut, no coolant-through requirement, compatible with standard CNC and manual tapping setups

Compatibility

Designed for M5x0.80 metric coarse through-hole threading in hardened steel, stainless steel, high-nickel alloys, and titanium. Suited for use in CNC machining centers and manual drill presses equipped for rigid or floating tap holders accepting a shank diameter of 0.1940 inches.

Installation Notes

Tapping operations should be performed by a qualified machinist following shop safety protocols for rotating tooling. Ensure the workpiece is securely fixtured and the spindle is stopped completely before loading or removing the tap. Use an appropriate cutting fluid or tapping compound rated for the specific alloy being threaded, as dry tapping in stainless or nickel alloys will accelerate tool wear and risk tap breakage. Inspect the tap for chipping or wear at regular intervals when running production quantities in difficult materials.