Value Collection JY4845293 Straight Flute Tap 9/16-28 Uns

Product Description

The VALUE COLLECTION JY4845293 is a straight flute tap designed for cutting internal threads in a 9/16-28 UNS thread form. It features a plug chamfer style, which provides a gradual lead-in and is suited for through-holes as well as moderately deep blind holes. Manufactured from high-speed steel with a bright, uncoated finish, this tap delivers consistent cutting performance across a range of ferrous and non-ferrous materials. The H3 thread limit and 3B class of fit ensure threads meet standard tolerance requirements for functional assemblies. Overall length is 3-19/32 inches with a 4-flute configuration.

This tap is used in machining and metalworking applications where UNS (Unified National Special) threads are required at 9/16-28 pitch. The 4-flute straight flute design is appropriate for use in materials that produce short chips, such as cast iron, brass, and free-machining steels. It is installed and operated by machinists, tool-and-die makers, and maintenance technicians using a tap wrench, tapping head, or CNC rigid tapping setup. Right-hand thread direction means standard clockwise rotation for cutting.

Key Features

• 9/16-28 UNS thread form with right-hand direction
• Plug chamfer for use in through-holes and moderately deep blind holes
• 4 straight flutes suited to short-chipping materials
• H3 thread limit with 3B class of fit for standard tolerance assemblies
• High-speed steel construction for general-purpose tapping durability
• Bright, uncoated finish — no coating buildup to affect thread tolerance

Compatibility

Designed as a standard replacement or production tap for applications requiring a 9/16-28 UNS internal thread. Verify spindle or tap wrench shank compatibility before installation.

Installation Notes

This tap is installed by machinists or maintenance technicians using a tap wrench, tapping head, or rigid CNC tapping cycle. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct tap drill diameter for 9/16-28 UNS before tapping. Use appropriate cutting fluid for the workpiece material to extend tap life and improve thread finish. Inspect the tap for wear or chipping before each use and discard if damaged to avoid thread damage or breakage in the workpiece.