Osg 1014500 Straight Flute Tap 8-36 Unf 4 Flutes Hss

Product Description

The OSG 1014500 is a straight flute tap designed to cut 8-36 UNF internal threads in a wide range of ferrous and non-ferrous metals. Built from high-speed steel (HSS) with a bright/uncoated finish, this tap delivers reliable performance in standard tapping applications where coolant-through tooling is not required. It features 4 flutes, a taper chamfer for easy thread lead-in, and an H2 thread limit for close tolerance control. Overall length is 2.125 inches, with a thread length of 0.47 inches. Licensed machinists, tool and die makers, and maintenance technicians use this tap for both production and repair threading work.

This tap is suited for threading aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. The taper chamfer makes it a practical choice for through-hole applications where starting the tap straight is a priority. It follows Series 102 specifications and is appropriate for both 2B and 3B class of fit requirements, giving it useful range across general-purpose and close-tolerance jobs.

Key Features

• 8-36 UNF thread form with right-hand thread direction
• 4 straight flutes for efficient chip management in through-hole tapping
• Taper chamfer for controlled thread entry and alignment
• H2 thread limit for consistent fit across 2B and 3B tolerance classes
• High-speed steel construction for durability across multiple material types
• Bright/uncoated finish - no coating buildup to affect thread geometry

Compatibility

Designed for tapping 8-36 UNF threads in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. Meets Series 102 specifications for 2B and 3B class of fit applications.

Installation Notes

This tap is installed using a standard tap wrench, tapping head, or machine spindle rated for the appropriate torque range. Always secure the workpiece and ensure the tap is started perpendicular to the hole to prevent thread damage or breakage. Use a suitable cutting fluid for the material being tapped - even uncoated HSS taps benefit from lubrication in steel and cast iron. Follow applicable shop safety practices and power down any machine spindle before manually handling the tap.