Regal Cutting Tools 010325AS Thread Forming Tap 5-40 Unc

Product Description

The REGAL CUTTING TOOLS 010325AS is a thread forming tap designed for cutting internal 5-40 UNC threads in blind holes. Unlike cutting taps, thread forming taps displace material rather than remove chips, producing stronger threads with a superior surface finish. This tap is manufactured from high-speed steel with a bright uncoated finish and features a bottoming chamfer with 1 to 2 chamfered threads, making it well suited for threading close to the bottom of a blind hole. The overall length is 1.9375 inches with a thread length of 0.625 inches and an H5 thread limit. Installation is typically performed by machinists, tool and die makers, and maintenance technicians working with small fastener applications.

This tap is intended for use in blind hole threading operations where a 5-40 UNC thread form is required. The bottoming chamfer allows threading to near the full depth of a blind hole, which is critical in tight-tolerance assemblies. Its compact shank diameter of 0.141 inches and square drive size of 0.11 inches are sized for use with standard tap wrenches or machine holders appropriate for this thread size. The Met-Flo series designation indicates a thread forming design optimized for ductile materials such as aluminum, brass, and mild steel.

Key Features

• Thread forming design displaces material rather than cutting chips, resulting in stronger internal threads
• Bottoming chamfer with 1 to 2 chamfered threads allows threading close to the bottom of a blind hole
• 5-40 UNC thread form with H5 thread limit for consistent fit across assembled components
• High-speed steel construction provides durability in moderate-production threading applications
• Bright uncoated finish suitable for use with standard tapping fluids
• Right-hand thread direction, standard for the majority of fastener applications

Compatibility

Designed as an OEM-style replacement or standard production tap for blind hole threading applications requiring a 5-40 UNC thread form in ductile materials.

Installation Notes

Thread forming taps require a correctly sized forming tap drill - do not use a standard cut tap drill size, as the hole diameter is larger for forming taps than for cutting taps. Always apply an appropriate tapping fluid or cutting oil before use. Power down any machine spindle and secure the workpiece firmly before starting the operation. Follow applicable shop safety practices and manufacturer guidelines for tap speed and feed rates.