Value Collection JY4847141 Straight Flute Tap 3/4-18 Uns

Product Description

The VALUE COLLECTION JY4847141 is a straight flute tap designed for cutting 3/4-18 UNS internal threads in a wide range of materials. Built from high-speed steel with a bright/uncoated finish, this plug chamfer tap features 4 flutes and an H3 thread limit, making it well suited for through-hole and moderately deep blind-hole tapping applications. With a 3B class of fit and right-hand thread direction, it produces threads that meet standard commercial tolerance requirements. The overall length is 4.25 inches. Machinists and toolroom technicians rely on this tap for general-purpose threading operations where consistent thread form and tool life are required.

This tap is appropriate for use in manual tapping operations as well as machine tapping setups where straight flute geometry is preferred. The plug chamfer — typically 3 to 5 threads of lead-in — makes it a versatile choice for both through holes and blind holes with adequate chip clearance. The UNS thread form and 3B fit class cover a broad range of industrial and mechanical assembly applications. It is commonly used in maintenance, repair, and fabrication environments across metalworking trades.

Key Features

• 3/4-18 UNS thread form for non-standard pitch applications requiring a unified thread profile
• Plug chamfer provides 3 to 5 threads of lead-in for versatile use in through holes and blind holes
• 4-flute straight flute design for balanced cutting action in a variety of workpiece materials
• H3 thread limit controls finished thread size within tight tolerance for reliable 3B class of fit
• High-speed steel construction offers durability and resistance to heat during cutting
• Bright/uncoated finish suitable for use with cutting fluids across a range of metals

Compatibility

Designed as a standard replacement or working tap for any application requiring a 3/4-18 UNS right-hand internal thread with a 3B class of fit.

Installation Notes

This tap should be installed and used by qualified machinists or toolroom technicians familiar with tapping operations. Always secure the workpiece and use appropriate cutting fluid for the material being tapped to extend tool life and improve thread quality. Ensure the tap is properly aligned to the pilot hole before beginning the cut to avoid tap breakage. Follow applicable shop safety procedures and equipment manufacturer guidelines when operating tapping machines or tap handles.