Guhring 9039970048260 Spiral Point Tap 10-32 Unf Tin

Product Description

The GUHRING 9039970048260 is a spiral point plug tap designed for through-hole threading in ferrous and hard-to-machine materials, including stainless steel. It cuts a 10-32 UNF right-hand thread to a 3B class of fit with an H3 thread limit, delivering consistent thread form and dimensional accuracy. The three-flute spiral point geometry pushes chips forward ahead of the cutting action, reducing chip packing in through-hole applications. A titanium nitride (TiN) coating improves surface hardness and reduces friction at the cutting edge. This tap belongs to Guhring Series 3997, ground from powdered metal (PM) high-speed steel for tighter tolerances and improved wear resistance compared to conventional HSS. It is sized for use in standard tap wrenches or machine spindles.

This tap is engineered for through-hole threading operations where chip evacuation is the primary concern. The spiral point design makes it well suited for CNC tapping, turret lathes, and drill press work in production environments. Its primary material application is stainless steel, though the TiN coating and powdered metal construction also support use in other tough alloys that demand consistent tool life. The plug chamfer provides a gradual entry over the first few threads, making it appropriate for applications where the tap can exit through the back of the workpiece.

Key Features

• 10-32 UNF thread form, right-hand cut, H3 thread limit for 3B class of fit
• Three-flute spiral point geometry pushes chips forward in through-hole applications
• Powdered metal HSS construction for improved wear resistance and dimensional consistency
• TiN coating reduces friction and extends tool life in stainless steel and tough alloys
• Plug chamfer with gradual entry — suited for through-hole exits
• Series 3997, no coolant-through, standard shank for use in common tap holders

Compatibility

Designed for through-hole threading at 10-32 UNF in stainless steel and similar ferrous alloys. Compatible with standard tap wrenches, machine tap holders, and floating tap adapters that accept the 0.194-inch shank diameter.

Installation Notes

Installation and use should be performed by a machinist or tooling professional familiar with tapping operations and feeds-and-speeds for the workpiece material. Always secure the workpiece and ensure the tap is properly aligned to the drilled pilot hole before engagement. Use a cutting fluid or tapping compound rated for stainless steel to protect both the tap and the workpiece surface. Inspect the tap for chipping or wear before each use — a worn or damaged tap should not be re-used on finish-critical threads.