Osg 1405003408 Thread Forming Tap 6-32 Unc Bottoming

Product Description

The OSG 1405003408 is a thread forming tap in the EXOTAP VP-NRT series, designed for cold-form threading in blind holes. Unlike cutting taps, this bottoming tap displaces material rather than cutting it, producing stronger threads with no chip generation. It is manufactured from powdered metal high-speed steel (PM-HSS) for improved wear resistance and toughness over conventional HSS. The TiCN coating reduces friction and extends tool life in demanding applications. With an overall length of 2 inches and a 6-32 UNC thread form, it is suited for precision tapping operations in production and maintenance environments across metalworking trades.

This tap is built for blind hole threading in a wide range of materials including alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel. The bottoming chamfer with 1 to 1.5 chamfered threads allows threading close to the bottom of a blind hole, making it a practical choice where thread depth is critical. It fits standard tapping applications in machine shops, manufacturing facilities, and field maintenance settings where a 6-32 UNC Class 2B fit is required.

Key Features

• Thread forming (cold-form) design eliminates chips and produces stronger threads than cut taps
• Powdered metal high-speed steel construction for superior wear resistance and edge toughness
• TiCN coating reduces friction and extends service life in ferrous and non-ferrous materials
• Bottoming chamfer with 1 to 1.5 chamfered threads for threading close to the bottom of blind holes
• Right-hand thread direction, Class 2B fit, H5 thread limit for consistent tolerance control
• No coolant-through requirement — compatible with standard tapping fluids and setups

Compatibility

Designed for use in materials including alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel. Suitable for blind hole applications requiring a 6-32 UNC Class 2B thread form. Part of the OSG EXOTAP VP-NRT series 14050.

Installation Notes

Thread forming taps require a correctly sized forming tap drill hole — consult OSG or standard thread forming drill charts for the proper pre-drill diameter for 6-32 UNC in the target material. Use a tapping fluid or cutting oil appropriate for the workpiece material. Secure the workpiece fully and apply consistent, controlled torque to avoid tap breakage, particularly near the bottom of blind holes. Installation should be performed by a qualified machinist or technician familiar with tapping operations and proper machine speeds for form tapping.