Value Collection JY4847265 Straight Flute Tap 3/4-28 Uns

Product Description

The VALUE COLLECTION JY4847265 is a straight flute tap designed for cutting 3/4-28 UNS internal threads in a variety of materials. Made from high-speed steel with a bright, uncoated finish, this tap delivers reliable thread-cutting performance in general machining and maintenance applications. It features a plug chamfer for progressive thread engagement and is configured with 4 flutes to evacuate chips during through-hole and blind-hole tapping. The overall length is 4.25 inches. This tap is suited for machinists, maintenance technicians, and tool-room professionals working with UNS thread specifications.

This tap is intended for cutting right-hand internal threads to a 3/4-28 UNS standard. The 3B class of fit indicates a standard tolerance range appropriate for general-purpose assemblies requiring reliable thread engagement. The H3 thread limit provides consistent sizing within tightly controlled tolerance bands. It is commonly used in precision machining shops, MRO environments, and industrial maintenance settings where UNS thread forms are specified on fastener or fitting components.

Key Features

• Thread size 3/4-28 UNS for precise internal thread cutting to United National Special standard
• 4 straight flutes for effective chip evacuation during tapping operations
• Plug chamfer provides gradual thread engagement, suitable for through-hole and sufficiently deep blind-hole applications
• High-speed steel construction offers durability across a range of workpiece materials
• Bright, uncoated finish with H3 thread limit for controlled tolerance sizing
• Right-hand thread direction, 3B class of fit for standard-tolerance assemblies

Compatibility

Designed as a general-purpose straight flute tap for cutting 3/4-28 UNS right-hand internal threads in compatible workpieces where a 3B class of fit and H3 thread limit are required.

Installation Notes

Tapping operations should be performed by qualified machinists using a properly aligned tap wrench, drill press, or CNC setup. Ensure the workpiece is secured and the pilot hole is drilled to the correct tap drill diameter for a 3/4-28 UNS thread before starting. Apply appropriate cutting fluid to reduce heat and extend tap life. Inspect the tap for wear or damage before each use and do not force a tap that has stalled, as breakage can result.