Walter-prototyp 7427627 M6x1 Thread Forming Tap Tin Hss

Product Description

The WALTER-PROTOTYP 7427627 is a thread forming tap designed for right-hand M6x1 metric threads in both blind-hole and through-hole applications. Built from High-Speed Steel-E (HSS-E) and finished with a Titanium Nitride (TiN) coating, this tap uses a cold-forming process that displaces material rather than cutting it, producing stronger threads with no chips to evacuate. It carries a 6HX class of fit and features a modified bottoming chamfer with 2-3 chamfered threads for close-to-bottom thread production. Overall length is 3.15 inches (80 millimeters) with a tapping depth of 1.18 inches (30 millimeters). It is installed by machinists and tool-and-die professionals in production and maintenance environments.

This tap suits blind-hole and through-hole threading operations in a range of workpiece materials. The TC410 Advance series is engineered for use in material application categories P (steel), M (stainless steel), K (cast iron), N (non-ferrous metals), and S (heat-resistant alloys). It is well suited for CNC machining centers and manual tapping operations where chip-free thread forming is required. The 3.5xD flute-to-diameter ratio and five oil grooves support lubrication distribution during the forming process, making it effective in both high-volume production runs and precision repair work.

Key Features

• Thread forming (chipless) process produces stronger threads by cold-working the material
• TiN coating reduces friction and extends tool life across a broad range of materials
• Modified bottoming chamfer with 2-3 chamfered threads for threading close to the bottom of blind holes
• Five oil grooves support consistent lubricant delivery during forming
• 6HX class of fit for standard metric thread tolerance requirements
• Right-hand thread direction, suitable for standard CNC and manual tapping setups

Compatibility

Designed for M6x1 right-hand metric thread forming in material groups P, M, K, N, and S, including steels, stainless steels, cast irons, non-ferrous metals, and heat-resistant superalloys in blind-hole and through-hole configurations.

Installation Notes

Thread forming taps require a forming-specific tap drill size - do not use a standard cut-tap drill chart, as forming taps require a larger pre-drilled hole diameter than cutting taps for the same thread size. Apply a threading fluid or cutting oil rated for the workpiece material before and during the tapping operation. Ensure the tap is properly aligned with the pre-drilled hole axis to prevent cross-threading or tool breakage. Always power down or de-energize the machine spindle before manually handling or changing taps.