Emuge BU396A00.5005 Thread Forming Tap 6-32 Unc Bottoming

Product Description

The EMUGE BU396A00.5005 is a bottoming-style thread forming tap designed for 6-32 UNC internal threads in blind hole applications. Made from High-Speed Steel-E-PM (powder metallurgy HSS) with a TiN-T26 coating, this tap produces threads by displacing material rather than cutting, eliminating chips and reducing the risk of chip packing in blind holes. It carries a 2BX class of fit and an H4 thread limit. Overall length is 2.2047 inches with a thread length of 0.4724 inches and a tapping depth of 0.7874 inches. Intended for use by machinists and tooling professionals in production and maintenance environments.

This tap is suited for blind hole threading in steel and stainless steel workpieces, corresponding to ISO material application codes P and M. The bottoming chamfer with 1.5 to 2 chamfered threads allows the tap to form threads close to the bottom of a blind hole, maximizing usable thread depth. It is part of the BU396A00 series, marketed under the EMUGE trade designation InnoForm 1-VA/E-SN-PM-TiN-T26, and is engineered for applications where thread integrity and surface finish in ferrous materials are critical.

Key Features

• Thread forming design displaces material without cutting, producing no chips in blind holes
• High-Speed Steel-E-PM construction offers improved toughness and wear resistance over conventional HSS
• TiN-T26 coating reduces friction and extends tool life in steel and stainless steel
• Bottoming chamfer (1.5-2P) maximizes usable thread depth in blind hole applications
• 2BX class of fit with H4 thread limit for controlled, close-tolerance threads
• Right-hand thread direction, 3xD flute-by-diameter ratio for balanced performance

Compatibility

Designed for blind hole thread forming in steel and stainless steel materials (ISO material codes P and M) requiring 6-32 UNC internal threads at a 2BX class of fit.

Installation Notes

Thread forming taps require a forming tap drill size, not a standard cut-tap drill size - verify the correct hole diameter before tapping to achieve the specified class of fit. Use a suitable tapping fluid or cutting oil rated for the workpiece material, particularly when working with stainless steel. Ensure the workpiece is securely fixtured and the tap is driven with a torque-controlled tapping head or tapping attachment to avoid overloading the tool. Follow applicable shop safety practices and machine guarding requirements during operation.