Osg 1040100 Straight Flute Tap 8-32 Unc Plug Hss

Product Description

The OSG 1040100 is a straight flute plug tap designed for cutting 8-32 UNC internal threads in a wide range of materials. Built from high-speed steel with a bright uncoated finish, this tap produces right-hand threads and is rated to an H1 thread limit for close-tolerance work. It carries a 0.468 inch thread length and an overall length of 2.125 inches, making it a compact, standard-size tap suited for production and maintenance threading operations. The plug chamfer style provides a balance between starting ease and thread engagement, and the 3-flute design offers adequate chip clearance in through-hole and shallow blind-hole applications.

This tap is intended for threading operations in ferrous and non-ferrous metals including aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. It is well suited for machine tapping on drill presses, CNC machining centers, and tapping heads, as well as hand tapping in maintenance and repair environments. The bright finish makes it a cost-effective choice for general-purpose threading where a specialized coating is not required.

Key Features

• 8-32 UNC thread form with right-hand thread direction
• Plug chamfer for balanced starting and thread engagement
• High-speed steel construction for durability across multiple materials
• H1 thread limit for close-tolerance thread production
• 3-flute design provides chip clearance in through-hole and shallow blind-hole applications
• Bright uncoated finish suitable for general-purpose threading

Compatibility

Rated for use in aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel. Designed as a standard 8-32 UNC plug tap compatible with common tapping chucks and holders sized for the 0.168 inch shank diameter.

Installation Notes

Machinist or tooling technician installation is standard for this product. Ensure the workpiece is securely fixtured and the tap is properly aligned to the pilot hole before beginning the threading operation. Apply appropriate cutting fluid for the material being tapped to reduce heat and extend tool life. Follow applicable shop safety practices and manufacturer feed-rate guidelines when machine tapping.