Osg 1226202 Spiral Point Tap 5/16-24 Unf Hss

Product Description

The OSG 1226202 is a spiral point tap designed for cutting internal threads in a wide range of ferrous and non-ferrous materials. Built from high-speed steel and finished with an elektraLUBE coating, this tap delivers consistent thread formation with reduced friction during the cutting cycle. It is configured in a plug chamfer style with 2 flutes and a 1.125-inch thread length, running a right-hand thread direction to a 5/16-24 UNF thread size at an H2 thread limit. Machinists and tool and die technicians use this style of tap in production and repair environments where precise UNF threading is required.

The OSG 1226202 is suited for threading operations across a broad material range, including aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, high-carbon steel, and hardened steel. The plug chamfer makes it appropriate for through-hole applications where the tap can pass fully through the workpiece. It is a Series 105 tool intended for general-purpose tapping on CNC machines, drill presses, and manual tapping setups where right-hand UNF threads are called out on engineering drawings.

Key Features

• 5/16-24 UNF right-hand thread, H2 thread limit for standard fit tolerances
• High-speed steel construction provides durability across a wide material range
• elektraLUBE coating reduces friction and aids chip evacuation during threading
• Plug chamfer style suited for through-hole tapping applications
• 2-flute spiral point design pushes chips ahead of the tap for clean thread formation
• No coolant-through requirement, simplifying setup on standard machines

Compatibility

Designed as a general-purpose UNF spiral point tap compatible with standard tapping chucks, tap holders, and collet systems that accept the corresponding shank diameter for 5/16-24 tooling.

Installation Notes

Tapping operations should be performed by a qualified machinist following applicable shop safety procedures. Ensure the workpiece is securely fixtured and the spindle speed is set to a rate appropriate for the workpiece material and tap diameter before beginning the threading cycle. Apply a suitable cutting fluid to the tap and workpiece even when using coated tooling to extend tool life. Inspect the tap for wear or damage before each use and replace if thread form shows signs of deterioration.