Emuge BU921400.5045 Thread Forming Tap 3/8-24 Unf Tin

Product Description

The EMUGE BU921400.5045 is a thread forming tap designed for cold-forming internal threads without cutting chips. Built from High-Speed Steel-E (cobalt-grade HSS) and finished with a TiN-T1 titanium nitride coating, this tap produces 3/8-24 UNF threads to a 2BX class of fit. The modified bottoming chamfer - 2 to 3 chamfered threads - allows threading close to the bottom of a blind hole. At 3.937 inches overall length with an 0.709-inch thread length, it fits standard tapping chucks and holders used in machine shop and field applications. Licensed machinists and toolroom technicians are the primary users.

This tap is suited for blind-hole and through-hole threading operations in steel, stainless steel, and non-ferrous metals - material application codes P, M, and N. The Rekord Druck-S series (trade name Druck 1-STEEL-SN-TiN) is engineered for use in CNC machining centers and production tapping equipment where chipless thread forming is preferred for superior thread strength and surface finish. Maximum tapping depth reaches 1.535 inches, making it appropriate for moderate-depth blind-hole work in the 3/8-24 UNF range.

Key Features

• Thread forming (fluteless) design - no chips generated, reduces tap breakage risk in blind holes
• High-Speed Steel-E (cobalt content) construction for heat and wear resistance in ferrous materials
• TiN-T1 coating reduces friction and extends tool life in steel and stainless applications
• Modified bottoming chamfer (2-3P) for threading close to hole bottom
• Right-hand thread direction, 3/8-24 UNF, 2BX class of fit
• 3xD flute-by-diameter ratio supports rigid tapping setups

Compatibility

Designed for blind-hole and through-hole threading in steel, stainless steel, and non-ferrous metals. Compatible with standard tapping holders accepting a 0.381-inch shank diameter with a 0.286-inch square drive. Coolant-through capability is not supported on this model.

Installation Notes

Thread forming taps require a properly sized forming tap drill - consult the tap manufacturer chart for the correct pre-drill diameter specific to 3/8-24 UNF forming taps, as it differs from cutting tap drill sizes. Apply appropriate tapping fluid or cutting oil rated for the workpiece material before operation. Ensure the tap is driven at the recommended RPM for the material and tap diameter using a rigid or synchronized tapping cycle on CNC equipment. Inspect the tap and holder for runout before use to avoid galling or tap failure in blind-hole applications.