Value Collection JY4844262 Straight Flute Tap 1/2-28 Unef

Product Description

The VALUE COLLECTION JY4844262 is a straight flute bottoming tap designed for cutting internal threads in through-holes and blind holes where full thread depth close to the bottom is required. Built from high-speed steel with a bright uncoated finish, this tap handles 1/2-28 UNEF right-hand threads and is suited for general-purpose tapping in a machine shop or field maintenance environment. With 4 flutes and an H3 thread limit, it produces consistent thread geometry in a range of workpiece materials. Overall length is 3.375 inches and the tool weighs 0.25 pounds.

This tap is used in metalworking and machining applications requiring fine unified thread form at 1/2-28 UNEF. The bottoming chamfer style makes it the correct choice when threads must extend to the bottom of a blind hole. It is typically deployed in manual tapping handles, drill presses, CNC lathes, or tapping machines in production and maintenance settings. Machinists, toolmakers, and mechanical maintenance technicians use this tap when precise thread depth control is needed.

Key Features

• 1/2-28 UNEF thread size and standard for fine-pitch threading applications
• Bottoming chamfer allows threading to the bottom of a blind hole
• 4 straight flutes provide chip clearance and cutting stability
• H3 thread limit ensures consistent tolerance for standard fit classes
• High-speed steel construction provides durability across a range of workpiece materials
• Bright uncoated finish — no added coating to alter cutting geometry or dimensional tolerance

Compatibility

Designed as a standard replacement or shop-stock straight flute tap for 1/2-28 UNEF bottoming applications in manual and machine tapping operations.

Installation Notes

A licensed machinist or trained mechanical technician should select the correct tap drill size for 1/2-28 UNEF threads before use. Always use appropriate cutting fluid or tapping compound for the workpiece material to extend tool life and improve thread finish. Secure the workpiece firmly before tapping, and back the tap off periodically to break chips when working in blind holes. Inspect the tap for wear or chipping before each use and replace if damage is observed.