Osg 2885500 Spiral Point Tap 10-32 Unf 2 Flute Hss

Product Description

The OSG 2885500 is a spiral point tap designed for cutting 10-32 UNF internal threads in a range of materials common to machining and fabrication work. Built from high-speed steel with a bright finish, this plug-chamfer tap is suited for through-hole tapping applications where the spiral point action pushes chips ahead of the cut rather than packing them into the flute. The 2-flute geometry and H3 thread limit deliver consistent sizing for 2B class of fit threads. Overall length is 2.375 inches with a thread length of 0.54 inches and a shank diameter of 0.194 inches. Machinists, tool-and-die technicians, and maintenance professionals are the primary users.

This tap is rated for use in aluminum, cast aluminum, low-carbon steel, and medium-carbon steel. Its spiral point design makes it well suited for CNC tapping cycles and hand-tapping operations in through-hole configurations where chip evacuation in front of the tap is practical. The plug chamfer provides a gradual lead-in, distributing cutting load across several threads at entry. It is not designed for blind-hole applications where chip backing would cause issues.

Key Features

• 10-32 UNF thread form with 2B class of fit for standard tolerance threaded assemblies
• Spiral point geometry pushes chips forward, reducing chip packing in through-hole applications
• H3 thread limit for consistent fit within 2B tolerance range
• High-speed steel construction provides durability across aluminum and steel workpiece materials
• Plug chamfer distributes entry cutting load gradually over the lead threads
• Right-hand thread direction, no coolant-through, non-interrupted thread form

Compatibility

Rated for use in aluminum, cast aluminum, low-carbon steel, and medium-carbon steel workpieces. Designed as a through-hole spiral point tap for 10-32 UNF thread applications requiring 2B class of fit.

Installation Notes

A licensed machinist or qualified maintenance technician should select appropriate cutting fluid or tapping compound for the workpiece material before use. Secure the workpiece firmly and ensure the tap is aligned perpendicular to the hole to prevent tap breakage. Follow standard shop practices for tapping speed appropriate to the workpiece material and tap size. Inspect the tap for wear or chipping before each use and replace if thread quality degrades.