Osg 1212400 Spiral Point Tap 6-32 Unc 2 Flute Hss

Product Description

The OSG 1212400 is a spiral point tap designed for cutting 6-32 UNC internal threads in a wide range of ferrous and non-ferrous materials. With 2 flutes and a plug chamfer, this tap pushes chips forward ahead of the cutting edge, making it well-suited for through-hole tapping operations. Built from high-speed steel (HSS) with a bright finish, it offers dependable wear resistance for production and maintenance threading work. The H3 thread limit holds tolerances appropriate for a 2B class of fit, delivering consistent, gauged thread quality. Machinists, maintenance technicians, and tool-and-die professionals regularly rely on this tap for precision threading across a variety of shop and field applications.

The OSG 1212400 is applicable across a broad material range including aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, high-carbon steel, and hardened steel. Its plug chamfer (typically 3-5 threads of lead) makes it the standard choice for through-hole tapping where chip evacuation forward is acceptable. Right-hand thread direction aligns with conventional tapping setups on drill presses, CNC machining centers, and hand tapping fixtures.

Key Features

• 6-32 UNC thread size with 2B class of fit for standard tolerance threading
• H3 thread limit for consistent fit across gauged production work
• Plug chamfer promotes forward chip flow - ideal for through-hole applications
• High-speed steel construction provides durability across a wide material range
• Bright finish with no coating - straightforward regrinding and inspection
• Right-hand, non-coolant-through design compatible with standard tapping setups

Compatibility

Compatible with aluminum, cast aluminum, cast iron, hardened steel, high-carbon steel, low-carbon steel, and medium-carbon steel workpieces requiring 6-32 UNC through-hole threads with a 2B class of fit.

Installation Notes

Tapping should be performed by a qualified machinist or maintenance technician using appropriate cutting fluid for the workpiece material. Ensure the workpiece is securely fixtured and the tap is correctly aligned before starting. Use a tap handle, drill press, or CNC tapping cycle appropriate for the tap size to avoid breakage from off-axis loading. Always follow shop safety procedures and applicable standards when operating cutting tools.