Osg 1615016151 Thread Forming Tap M16x1.50 Metric Fine

Product Description

The OSG 1615016151 is a thread forming tap designed for M16x1.50 metric fine threading applications. Unlike cutting taps, thread forming taps displace material rather than cut it, producing stronger threads with no chips. This tap is manufactured from cobalt high-speed steel and carries a TiCN (Titanium Carbonitride) coating, designated finish code V, for improved hardness and heat resistance at the cutting zone. With a modified bottoming chamfer of 2.5 to 3 threads, it is suited for blind hole work where threads must start close to the bottom. It is part of the OSG Series 16150 EXOPRO XPF-OIL line and is installed by machinists, toolroom technicians, and production operators working in metalworking environments.

This tap is rated for a wide range of materials including aluminum, cast aluminum, carbon steel, alloy steel, die steel, hardened steel, stainless steel, high-nickel alloy, and titanium, making it applicable across aerospace, automotive, mold-and-die, and general machining operations. It supports both blind hole and through-hole threading configurations. The 6H class of fit with a D11 thread limit ensures dimensional accuracy consistent with metric fine tolerance requirements. Coolant-through capability is included, which is important when tapping deep holes or difficult alloys at production feed rates.

Key Features

• Thread forming (chipless) action produces stronger threads and eliminates chip evacuation concerns in blind holes
• Cobalt HSS construction provides elevated heat and wear resistance compared to standard M2 HSS
• TiCN coating (finish code V) reduces friction and extends tool life across ferrous and non-ferrous materials
• Modified bottoming chamfer (2.5 to 3 threads) allows threading close to the bottom of blind holes
• Coolant-through design supports high-speed tapping and thermal management in deep or tight-tolerance holes
• D11 thread limit and 6H class of fit maintain consistent metric fine thread geometry

Compatibility

Designed for M16x1.50 metric fine thread forming in aluminum, cast aluminum, carbon steel, alloy steel, die steel, hardened steel, stainless steel, high-nickel alloy, and titanium workpieces. Compatible with blind hole and through-hole applications requiring a 6H class of fit. Material application codes P, M, N, and H apply.

Installation Notes

Thread forming taps require a specific forming tap drill size, which differs from standard tap drill charts — consult the OSG Series 16150 technical data for the correct pre-drill diameter before use. Power down and secure all machine spindles before changing or inspecting tooling. Use appropriate tapping fluid or cutting oil rated for the workpiece material; coolant-through capability should be connected to the machine tool coolant supply when available. This tap is intended for use in CNC machining centers or rigid tapping setups — floating tap holders may reduce thread quality with form taps.