Regal Cutting Tools 015241AS Acme Thread Tap 5/8-8 4 Flute

Product Description

The REGAL CUTTING TOOLS 015241AS is a straight-flute Acme thread tap designed to cut internal 5/8-8 Acme threads in metal workpieces. Built from high speed steel with a bright finish, this tap features a 29-degree thread angle and a plug chamfer for standard through-hole and blind-hole tapping applications. The 2G class of fit delivers the moderate tolerance range most commonly required for general-purpose Acme threaded assemblies such as lead screws and power transmission components. With 4 straight flutes, it provides good chip clearance and consistent thread form in a range of ferrous and non-ferrous materials. Machinists, toolroom operators, and maintenance technicians rely on Acme thread taps like this one for producing the trapezoidal thread profiles that carry load and transmit motion in mechanical systems.

This tap is suited for job shops, maintenance and repair operations, and production environments where 5/8-8 Acme internal threads are required. The plug chamfer style, with a moderate entry taper, is the standard choice when tapping through holes or when the tap can be driven far enough past the thread runout in a blind hole. It is appropriate for use in manual tapping, drill press setups, and CNC tapping cycles where a rigid or floating tap holder is used. The 2G tolerance class makes this a practical choice for most standard power-screw and lead-screw thread engagements.

Key Features

• 5/8-8 Acme thread form with 29-degree thread angle for standard power-screw profiles
• Plug chamfer entry for versatile use in through holes and deeper blind holes
• 4 straight flutes for efficient chip evacuation and consistent thread geometry
• High speed steel construction for durability across a range of workpiece materials
• Bright finish with no coating, allowing direct inspection of tool condition
• 2G class of fit for general-purpose Acme thread tolerances

Compatibility

Designed as an OEM-style tooling replacement for applications requiring a 5/8-8 right-hand Acme internal thread in standard 2G tolerance class.

Installation Notes

Acme thread taps should be installed by qualified machinists or toolroom technicians familiar with tapping procedures and machine tool operation. Before tapping, ensure the workpiece is properly clamped and the pilot hole is drilled to the correct Acme tap drill diameter for the specified class of fit. Use an appropriate cutting fluid for the workpiece material to extend tool life and improve thread quality. Never force a tap against resistance, as Acme taps are susceptible to breakage if misaligned or run dry in tough materials.