Osg 1010702 Straight Flute Tap 1-72 Unf Plug 2B Hss

Product Description

The OSG 1010702 is a straight flute tap designed to cut 1-72 UNF internal threads in a wide range of ferrous and non-ferrous metals. It features a plug chamfer, 2 flutes, and a 2B class of fit with an H2 thread limit, making it well suited for general-purpose tapping where thread accuracy and consistent fit are required. Built from high-speed steel, the tap delivers reliable cutting performance across production and maintenance applications. Overall length is 1.6875 inches with a thread length of 0.375 inches. Right-hand thread cutting. Machinists, tool and die workers, and maintenance technicians are the primary users of this tap.

This tap is appropriate for use in both manual and machine tapping operations on a variety of materials including aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. The plug chamfer style distributes the cutting load across several leading threads, making it effective for through-hole applications as well as moderately deep blind holes. It fits standard tap holders and wrench drives sized for the 1-72 thread range.

Key Features

• 1-72 UNF thread size with right-hand cutting direction
• Plug chamfer distributes cutting load for through-hole and moderate blind-hole use
• 2B class of fit with H2 thread limit for standard tolerance threading
• 2-flute straight flute design suitable for short-chip materials including cast iron and aluminum
• High-speed steel construction for general-purpose durability across common shop materials
• No coolant-through requirement - compatible with flood, brush, or paste cutting lubricants

Compatibility

Designed for tapping 1-72 UNF threads in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. Compatible with standard tap holders and T-handle wrenches sized for the 1-72 thread range.

Installation Notes

Secure the workpiece and ensure the correct tap drill size for a 1-72 UNF thread is used prior to tapping. Use appropriate cutting fluid for the material being tapped - paste or oil lubricants are recommended for steel, while light oil or aluminum-specific fluid is appropriate for aluminum alloys. Apply steady, even pressure and back off periodically to break chips and clear flutes. Inspect the tap for wear or chipping before each use to avoid thread damage in the workpiece.