Osg 1415000108 Thread Forming Tap M1.6x0.35 Metric Coarse

Product Description

The OSG 1415000108 is a thread forming tap designed for M1.6x0.35 metric coarse threading in blind hole applications. Unlike cutting taps, thread forming taps displace material rather than cut it, producing stronger threads with no chips to clear. This tap is manufactured from powdered metal high-speed steel with a TiCN coating, which extends tool life in demanding production and maintenance environments. With a modified bottoming chamfer of 2 to 2.5 thread pitches, it starts threads close to the bottom of a blind hole. It is part of the OSG EXOTAP VP-NRT series and is installed by machinists, toolroom technicians, and precision manufacturing professionals.

This tap is suited for tapping small-diameter metric threads in materials including alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum. The modified bottoming chamfer makes it appropriate for shallow blind holes where thread engagement close to the bottom is required. The right-hand thread direction and standard class of fit designation make it compatible with typical metric fastener assemblies in precision parts manufacturing, toolroom work, and CNC production tapping operations.

Key Features

• Thread forming design displaces material for chip-free, stronger threads in blind holes
• Powdered metal high-speed steel construction for improved wear resistance over standard HSS
• TiCN coating reduces friction and extends tool life across a broad range of workpiece materials
• Modified bottoming chamfer (2 to 2.5P) allows threading close to the bottom of a blind hole
• Right-hand thread, D5 thread limit, Class 2B fit for standard metric fastener compatibility
• Compatible with alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel

Compatibility

Designed for blind hole thread forming in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces. Suitable for applications requiring M1.6x0.35 metric coarse right-hand internal threads to a Class 2B fit.

Installation Notes

Thread forming taps require a properly sized forming tap drill hole, which differs from standard tap drill sizes — consult OSG or a tooling reference for the correct pre-drill diameter for M1.6x0.35 forming taps. Use a tapping fluid or cutting oil appropriate for the workpiece material to reduce heat and extend tap life. Secure the workpiece firmly and ensure the tap enters the hole straight to avoid thread distortion or tap breakage at this small diameter. This tap should be installed using a torque-controlled tapping machine or tapping arm rather than hand tapping to maintain consistent thread quality.