Osg 1024300 Straight Flute Tap 8-32 Unc Hss Plug

Product Description

The OSG 1024300 is a straight flute tap designed for cutting 8-32 UNC internal threads in a wide range of ferrous and non-ferrous materials. It features four flutes, a plug chamfer, and is manufactured from high-speed steel with a bright, uncoated finish. The plug chamfer provides a gradual thread lead-in, making it well suited for through-hole tapping applications where chips can exit freely. With an overall length of 2.125 inches and a thread length of 0.75 inches, this tap is sized for standard hand and machine tapping operations in production and maintenance environments. The H3 thread limit ensures consistent fit within 2B class tolerances.

This tap is intended for use in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. It is commonly used by machinists, maintenance technicians, and tool-and-die tradespeople for creating machine-screw threads in tapped holes. Typical applications include production line threading, repair work, and fixture fabrication where an 8-32 UNC thread form is required. It is compatible with standard tap wrenches, tapping heads, and CNC machine toolholders sized for its 0.168-inch shank diameter.

Key Features

• 8-32 UNC thread form with right-hand thread direction
• 4-flute straight flute geometry promotes chip clearance in through-hole applications
• Plug chamfer provides gradual thread engagement for reduced entry force
• High-speed steel construction provides wear resistance across listed material applications
• H3 thread limit engineered to hold 2B class of fit tolerances
• Bright, uncoated finish suitable for use with standard cutting fluids

Compatibility

Designed as an OEM-style straight flute tap for 8-32 UNC through-hole threading in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel workpieces. Part of the OSG Series 102 product line.

Installation Notes

Installation is performed by qualified machinists or maintenance technicians using a properly sized tap wrench, tapping head, or CNC toolholder. Ensure the workpiece is securely fixtured and that the pilot hole diameter is correct for 8-32 UNC before starting. Apply an appropriate cutting fluid for the workpiece material to extend tap life and improve thread quality. Do not force the tap if resistance increases unexpectedly, as this indicates chip packing or misalignment.