Osg 7002602 Spiral Point Sti Tap 2-56 Unc Hss Plug

Product Description

The OSG 7002602 is a spiral point STI tap designed for threading screw thread inserts in metal workpieces. It features a plug chamfer style with 2 flutes and is manufactured from high-speed steel with an elektraLUBE coating to reduce friction and extend tool life during tapping operations. The 2-56 UNC thread form and H2 thread limit make this tap well-suited for close-tolerance threading in small-diameter applications. Overall length is 1.75 inches with a thread length of 0.4375 inches. Machinists and maintenance technicians use this tap when installing STI inserts to restore or create threaded holes in ferrous and non-ferrous materials.

This tap is used in precision machining, maintenance repair, and manufacturing environments where 2-56 UNC screw thread inserts are required. The plug chamfer style suits through-hole and moderately deep blind-hole applications. The spiral point geometry pushes chips forward ahead of the cutting edge, making it a practical choice for production tapping in through-holes. Typical applications include instrument assembly, electronics hardware, and small mechanical components where fine thread integrity and insert retention are critical.

Key Features

• 2-56 UNC thread form for small-diameter precision threading
• Spiral point geometry pushes chips forward for cleaner through-hole tapping
• High-speed steel construction provides durability across a wide range of materials
• elektraLUBE coating reduces friction and heat buildup during cutting
• Plug chamfer style for general-purpose through-hole and open blind-hole use
• H2 thread limit for close-tolerance STI insert thread production

Compatibility

Designed for use in tapping operations that require 2-56 UNC STI screw thread insert preparation. Consult STI tap drill charts and insert manufacturer specifications to confirm drill size and insert compatibility before use.

Installation Notes

This tap should be installed and operated by machinists or qualified maintenance technicians familiar with thread tapping procedures. Always use the correct STI tap drill size and apply appropriate cutting fluid to extend tool life and maintain thread quality. Secure the workpiece firmly before tapping and advance the tap with consistent, controlled pressure to avoid breakage in small-diameter threads. Never force a tap that has stopped turning freely - back it out, clear chips, and reapply cutting fluid before continuing.