Guhring 9039060030000 Spiral Point Tap M3x0.5 Tin Hss

Product Description

The GUHRING 9039060030000 is a spiral point tap designed for right-hand through-hole threading in metric M3x0.5 applications. Built from High-Speed Steel-E-PM (powder metallurgy grade), it carries a TiN (titanium nitride) coating that extends cutting life and reduces friction at the cutting edge. With 3 flutes and a plug chamfer, this tap pushes chips ahead of the cut, making it well suited for through-hole operations where chip evacuation is a priority. The 6H class of fit delivers the tolerance range required for standard metric fastener assemblies. Overall length is 1.941 inches with a thread length of 0.709 inches and a shank diameter of 0.141 inches.

This tap is rated for stainless steel applications, making it a practical choice for shops and field technicians threading into 300-series or similar alloys where tap wear is a common problem. The spiral point geometry helps maintain consistent chip flow in through-hole bores without chip packing, which is a frequent cause of tap breakage in tougher materials. It is appropriate for use in CNC machining centers, drill presses, or hand tapping setups where a tapping attachment provides float. Typical users include machinists, maintenance technicians, and fabricators working on precision assemblies requiring M3 threaded holes.

Key Features

• M3x0.5 metric thread, 6H class of fit for standard tolerance threaded assemblies
• High-Speed Steel-E-PM construction for improved wear resistance in difficult materials including stainless steel
• TiN coating reduces friction and heat buildup at the cutting edge, extending tool life
• Spiral point geometry pushes chips forward, optimized for through-hole threading
• Plug chamfer provides a gradual lead-in and good thread form across the chamfer length
• Right-hand thread direction, no coolant-through requirement, non-interrupted thread profile

Compatibility

Designed for through-hole threading applications in stainless steel and similar materials requiring M3x0.5 metric threads with a 6H class of fit. Part of the Guhring Series 3906 spiral point tap line.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician familiar with tapping operations. Ensure the workpiece is securely fixtured and the bore is drilled to the correct M3x0.5 tap drill diameter before threading. Use an appropriate cutting fluid or tapping compound rated for the workpiece material, particularly when threading stainless steel, to reduce heat and extend tap life. Never force the tap if resistance increases unexpectedly — back off to clear chips and inspect for wear or breakage risk.