Value Collection MSC-04916193 Straight Flute Tap 5/8-18 Unf

Product Description

The VALUE COLLECTION MSC-04916193 is a straight flute bottoming tap designed for cutting 5/8-18 UNF internal left-hand threads in through-holes and blind holes where full thread depth near the bottom is required. Manufactured from high-speed steel with a bright/uncoated finish, this tap offers reliable wear resistance for general threading applications in ferrous and non-ferrous materials. It carries a 3B class of fit and an H3 thread limit, making it suitable for standard tolerance threading work. With 4 straight flutes, it produces clean chip formation in shorter-chipping materials. Overall length is 3-13/16 inches with a thread length of 1-13/16 inches.

This tap is suited for machine shop and maintenance applications where left-hand threaded fastener installations are required. Bottoming chamfer geometry allows the tap to thread closer to the bottom of a blind hole than taper or plug style taps. Typical applications include repair work, fixture fabrication, and production threading where a 5/8-18 UNF left-hand thread form is specified. This tool is intended for use by machinists, toolroom technicians, and maintenance professionals working with manual or CNC tapping equipment.

Key Features

• Bottoming chamfer for threading to the bottom of blind holes
• Left-hand thread direction for specialized fastener applications
• 5/8-18 UNF thread form with 3B class of fit and H3 thread limit
• 4 straight flutes for efficient chip handling in short-chipping materials
• High-speed steel construction for durability across a range of workpiece materials
• Bright/uncoated finish suitable for use with cutting fluids

Compatibility

Designed as a standard straight flute bottoming tap compatible with manual tap handles, tapping heads, and CNC tapping cycles configured for 5/8-18 UNF left-hand thread applications.

Installation Notes

This tap should be installed and operated by qualified machinists or toolroom technicians familiar with tapping procedures and speeds. Always use an appropriate cutting fluid to reduce heat and extend tool life. Ensure the workpiece is securely fixtured and the tap is properly aligned to the pilot hole before beginning the threading operation. Follow machine manufacturer guidelines for spindle speed and feed rate when using in a tapping cycle.