Osg 1072802 Straight Flute Tap 6-32 Unc 2B H3 Hss

Product Description

The OSG 1072802 is a straight flute plug tap designed to cut internal 6-32 UNC threads in a wide range of ferrous and non-ferrous materials. Manufactured from high-speed steel, this right-hand tap features 2 flutes and a plug chamfer, making it well suited for through-hole tapping applications where chip clearance is managed manually or with cutting fluid. It carries a Class 2B thread fit and an H3 thread limit, providing the tight dimensional control that production and maintenance shops expect. Overall length is 2 inches with a thread length of 11/16 inches. Licensed trade machinists, toolmakers, and maintenance technicians are the typical users.

This tap is appropriate for use on aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. It fits standard tapping operations in both production floor environments and maintenance repair settings. The 6-32 UNC thread size is common in light-duty fastener applications including instrument panels, electronic enclosures, and small mechanical assemblies. The plug chamfer style requires a pre-drilled clearance hole and is not recommended for blind holes where bottom threads are required.

Key Features

• 6-32 UNC right-hand thread, Class 2B fit with H3 thread limit for precise tolerance control
• Plug chamfer style suited for through-hole tapping applications
• 2-flute straight flute geometry for use in short-chipping materials
• High-speed steel construction provides durability across a broad range of workpiece materials
• 2 inches overall length with 11/16 inches thread length
• No coolant-through feature - apply cutting fluid externally as needed

Compatibility

Compatible with aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel workpieces. Designed for use in standard tapping operations requiring a 6-32 UNC Class 2B internal thread.

Installation Notes

Secure the workpiece and use the correct tap drill size for 6-32 UNC before beginning the tapping operation. A tapping handle or machine tap holder should be used to maintain axial alignment and prevent tap breakage. Apply cutting fluid appropriate to the workpiece material throughout the operation. Reverse the tap periodically to break chips when working in deeper holes.