Emuge BU921400.5011 Thread Forming Tap 3/8-16 Unc Tin

Product Description

The EMUGE BU921400.5011 is a thread forming tap designed for cold-form tapping of 3/8-16 UNC threads in steel, stainless steel, and non-ferrous metals. Built from high-speed steel-E (cobalt-enhanced) with a titanium nitride (TiN) coating, this tap displaces material rather than cutting it, producing stronger threads with no chips to clear. It carries a 2BX class of fit and a modified bottoming chamfer with 2-3 chamfered threads, making it suited for both blind-hole and through-hole applications. Overall length is 3.937 inches with a thread length of 0.866 inches and a maximum tapping depth of 1.535 inches. Licensed machinists, tool-and-die makers, and maintenance technicians install this tap in production and repair environments.

The BU921400.5011 belongs to the EMUGE Rekord Druck-S series, which is engineered for cold-forming in ferrous and non-ferrous workpieces. It is appropriate for blind-hole and through-hole threading operations in residential and commercial fabrication, industrial maintenance, and precision machining environments. Material application codes P, M, and N confirm suitability across carbon steel, stainless steel, and non-ferrous metal workpieces. The 3xD flute-by-diameter ratio supports proper lubrication flow during the forming process.

Key Features

• Thread forming (chipless) design produces stronger threads and eliminates chip evacuation concerns
• High-speed steel-E (cobalt) construction improves heat and wear resistance in tough materials
• TiN coating reduces friction and extends tool life in steel and stainless steel applications
• Modified bottoming chamfer with 2-3 chamfered threads allows threading close to the bottom of blind holes
• 2BX class of fit meets standard UNC tolerance requirements for general mechanical assemblies
• Right-hand thread direction; compatible with standard tap holders and CNC tapping cycles

Compatibility

Designed for use in steel, stainless steel, and non-ferrous metal workpieces requiring 3/8-16 UNC internal threads. Suitable for blind-hole and through-hole threading operations where a 2BX class of fit is specified.

Installation Notes

Thread forming taps require a forming-specific pilot hole diameter that is larger than a standard cut-tap drill size - consult the appropriate forming drill chart for 3/8-16 UNC before drilling. Use a suitable thread forming lubricant or cutting oil rated for the workpiece material; dry tapping is not recommended. Power down or de-energize any machine before mounting or removing the tap from the holder. Follow shop safety protocols and machine manufacturer guidelines for spindle speed and feed rate when running this tap on CNC or manual equipment.