Osg 1111600903 Spiral Point Tap M10x1.25 Metric Fine

Product Description

The OSG 1111600903 is a spiral point plug tap designed for threading M10x1.25 metric fine threads in production and maintenance machining applications. Built from High-Speed Steel-E (vanadium-enhanced HSS), the tap carries a nitride coating that reduces friction and extends tool life during repeated use. The spiral point geometry pushes chips forward ahead of the cutting zone, making it well suited for through-hole tapping. The D5 thread limit provides a controlled oversize tolerance appropriate for standard metric fine thread fits. With a 1.25 inches thread length and a 9.68 mm shank diameter, this tap is sized for use in standard machine tap holders and tapping chucks.

The OSG 1111600903 is intended for tapping M10x1.25 metric fine threads in aluminum and cast aluminum workpieces. Its spiral point design is optimized for through-hole applications where chips can be pushed clear of the cutting zone. This tap is commonly used in CNC machining centers, turret lathes, and production tapping operations across automotive, aerospace, and general manufacturing environments. The plug chamfer provides a standard lead-in for most through-hole threading operations without requiring a starter or bottoming tap first.

Key Features

• M10x1.25 metric fine thread form with right-hand cutting direction
• Spiral point geometry advances chips forward — suited for through-hole tapping
• High-Speed Steel-E (vanadium HSS) construction for improved wear resistance over standard HSS
• Nitride coating reduces friction and extends tool life in aluminum applications
• D5 thread limit for controlled fit in standard metric fine threaded assemblies
• Plug chamfer provides standard lead-in for through-hole entry
• No coolant-through feature — compatible with flood coolant or cutting oil applied externally

Compatibility

Designed for tapping M10x1.25 metric fine through-holes in aluminum and cast aluminum. Suitable for use with standard M10 tap holders, tapping chucks, and CNC rigid tapping setups that accept a 9.68 mm shank diameter. Part of OSG Series 11116.

Installation Notes

Installation and use of this tap should be performed by a qualified machinist familiar with tapping feeds, speeds, and toolholding requirements for the target material. Ensure the machine spindle and workpiece fixture are secure before initiating the tapping cycle. Apply an appropriate cutting fluid or tapping compound rated for aluminum to maximize tool life and thread quality. Do not reverse the tap under power without confirming the machine is configured for synchronized or rigid tapping to avoid thread damage or tap breakage.