Osg 1825802 Spiral Point Sti Tap 10-32 Unf 2 Flute Hss

Product Description

The OSG 1825802 is a spiral point STI tap designed for cutting 10-32 UNF threads in through-hole applications. Built from high-speed steel with an elektraLUBE finish, it delivers consistent thread quality while reducing friction during the cutting cycle. The plug chamfer provides a gradual entry into the workpiece, making it suitable for through-hole tapping operations. With a 2-flute design and an H2 thread limit, this tap holds dimensional accuracy within standard tolerances for UNF thread forms. It is used in machining and maintenance environments where precise internal threads are required in ferrous and non-ferrous materials.

This tap is suited for threading 10-32 UNF holes in production and repair scenarios across industrial, mechanical, and trade maintenance applications. The spiral point design pushes chips forward ahead of the tap, keeping the flutes clear during through-hole passes. With an overall length of 2.375 inches and a thread length of 0.875 inches, it fits standard tap handles and machine tool holders used in bench work and CNC tapping operations. Machinists, tool and die technicians, and maintenance trades commonly use this tap for fastener hole preparation and thread repair work.

Key Features

• 10-32 UNF thread form for fine-pitch internal threading
• High-speed steel construction for durability across general-purpose tapping applications
• elektraLUBE finish reduces friction and extends tool life
• Plug chamfer allows gradual thread engagement, ideal for through-holes
• H2 thread limit maintains dimensional control within UNF tolerance standards
• Spiral point geometry pushes chips forward, reducing clogging in through-hole passes

Compatibility

Designed as an OEM-style replacement and standard production tap for 10-32 UNF through-hole threading applications in compatible tap handles and machine tool holders.

Installation Notes

This tap is installed and operated by machinists or skilled maintenance trades using standard tap handles or machine tapping attachments. Before tapping, ensure the workpiece is properly secured and the pilot hole is drilled to the correct tap drill size for 10-32 UNF threads. Apply cutting fluid appropriate for the workpiece material to protect the tap and extend tool life. Do not force the tap if resistance is felt - back off to clear chips and prevent breakage.