Osg 1074302 Straight Flute Tap 10-32 Unf 2 Flute Hss

Product Description

The OSG 1074302 is a straight flute plug tap designed for cutting internal threads in a wide range of ferrous and non-ferrous materials. Built from high-speed steel, this tap produces 10-32 UNF right-hand threads with a 2B class of fit and an H3 thread limit, making it suitable for general-purpose threading applications where close tolerance control is required. The plug chamfer distributes cutting load across several lead threads, reducing the torque required to start the cut. With a thread length of 0.875 inches and an overall length of 2.375 inches, it fits standard tap holders and T-handles used in bench and machine work.

This tap is suited for production and maintenance tapping operations in metalworking shops, manufacturing facilities, and tool rooms. The 2-flute straight flute configuration works well in through-hole and blind-hole applications in materials including aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. It is commonly used by machinists, maintenance technicians, and fabricators who require consistent thread quality in a compact 10-32 UNF format.

Key Features

• 10-32 UNF thread form with 2B class of fit for standard tolerance threading
• H3 thread limit for predictable fit with mating fasteners
• Plug chamfer distributes entry load across multiple lead threads
• High-speed steel construction provides wear resistance across a broad material range
• 2-flute straight flute design handles through-hole and blind-hole applications
• Right-hand thread direction compatible with standard tap drivers and CNC tapping cycles

Compatibility

Designed as a straight flute plug tap for use in standard tap holders, T-handle wrenches, and machine tapping chucks that accept 10-32 UNF tooling. Compatible materials include aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel.

Installation Notes

Tapping operations should be performed by qualified machinists or maintenance technicians using appropriate cutting fluid for the workpiece material. Ensure the workpiece is securely fixtured and the tap is aligned perpendicular to the drilled hole before applying torque. For machine tapping, verify spindle speed and feed rate are appropriate for the material and tap diameter before starting the cycle. Inspect the tap for chipping or wear before each use and replace if thread quality degrades.