Value Collection JY4874830 Straight Flute Tap 1-9/16-12 Uns

Product Description

The VALUE COLLECTION JY4874830 is a straight flute bottoming tap designed for cutting internal threads in through or blind holes where full thread depth is required close to the bottom. Manufactured from high-speed steel with a bright, uncoated finish, this tap is built for durability in standard tapping operations. It cuts a 1-9/16-12 UNS right-hand thread with 6 flutes, offering a thread length of 1.5 inches and an overall length of 4 inches. The H5 thread limit designation indicates a tight tolerance fit, appropriate for precision threaded assemblies. This tool is suited for machinists, maintenance technicians, and fabricators working on heavy-threaded components.

This tap is used in machine shop, maintenance, and industrial fabrication environments where large-diameter unified national special threads are required. The bottoming chamfer style allows threading to within 1-2 threads of a blind hole bottom, making it the correct choice when thread engagement must extend as deep as possible into a workpiece. Typical applications include heavy equipment repairs, custom fastener installations, and large-diameter fitting threads in metalworking operations.

Key Features

• Bottoming chamfer cuts threads within 1-2 threads of the bottom of a blind hole
• 6 flutes provide chip clearance and cutting stability in larger-diameter tapping
• High-speed steel construction offers toughness and wear resistance across a range of workpiece materials
• Bright, uncoated finish is compatible with a wide variety of cutting fluids and lubricants
• H5 thread limit ensures tight, consistent tolerance for precision thread fitment
• Right-hand thread direction for standard tapping operations

Compatibility

Designed for cutting 1-9/16-12 UNS right-hand internal threads in metalworking applications. Compatible with standard tap holders and tapping machines sized for large-diameter taps.

Installation Notes

This tap should be installed in a rigid tap holder or tapping machine rated for its shank size and torque requirements. Always apply appropriate cutting fluid for the workpiece material before and during tapping to reduce heat and extend tool life. Ensure the workpiece is securely fixtured before beginning the tapping operation. Follow applicable shop safety practices, including eye protection and secure clamping of the workpiece.