Osg 1045702 Straight Flute Plug Tap 10-24 Unc Hss

Product Description

The OSG 1045702 is a straight flute plug tap designed for cutting internal threads in a wide range of ferrous and non-ferrous materials. It produces a 10-24 UNC right-hand thread using three flutes and a plug chamfer, which provides a gradual thread entry suited to through-holes and moderately deep blind holes. The tap is manufactured from high-speed steel and carries a Thread Limit of H2, indicating a ground thread tolerance appropriate for standard UNC fits. Overall length is 2.375 inches with a thread length of 0.875 inches. Installation is performed by licensed machinists or skilled maintenance technicians using a standard tap wrench or machine holder.

This tap is applied in general-purpose tapping operations across metalworking, HVAC fabrication, plumbing, and electrical panel assembly where 10-24 UNC fasteners are specified. It is rated for use in aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel. The straight flute geometry is well suited to materials that produce short, brittle chips, and the plug chamfer makes it a practical first-choice tap for most shop and field threading tasks.

Key Features

• 10-24 UNC thread form with right-hand direction
• Plug chamfer for gradual thread engagement in through-holes and shallow blind holes
• Three straight flutes optimized for short-chip materials including cast iron and carbon steels
• H2 thread limit for standard UNC tolerance fits
• High-speed steel construction provides wear resistance across rated material applications
• No coolant-through requirement simplifies use in manual and standard machine setups

Compatibility

Rated for tapping aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel. Suitable for use with standard 10-24 UNC tap wrenches, T-handle holders, and compatible machine tap chucks.

Installation Notes

Secure the workpiece before tapping and ensure the correct tap drill size for 10-24 UNC has been used prior to threading. Apply cutting fluid appropriate to the workpiece material to extend tap life and reduce the risk of galling or breakage. Back the tap off periodically when hand-tapping to break chips. Never force a tap against resistance; back out and clear chips before continuing.