Value Collection JY4845277 Hand Tap 9/16-27 Uns Bottoming Hss

Product Description

The VALUE COLLECTION JY4845277 is a 9/16-27 UNS bottoming hand tap designed for cutting internal threads in through-holes and blind holes where full thread engagement close to the bottom is required. Manufactured from high speed steel (HSS) with a bright, uncoated finish, this tap delivers reliable cutting performance across a range of workpiece materials. It features 4 straight flutes and a right-hand thread direction, with a class of fit rated at 3B and a thread limit of H3. Overall length is 3-19/32 inches. Machinists, tool-and-die makers, and maintenance professionals reach for this tap when threading operations demand precision fit and a clean bottoming finish.

This tap is suited for hand tapping applications in production, maintenance, and repair environments. The bottoming chamfer style — typically 1 to 2 threads of lead — allows threading to the bottom of a blind hole, making it the correct choice when a plug or taper tap has already started the thread and full depth is needed. The 9/16-27 UNS thread form is used in specialty applications that fall outside standard UNC and UNF thread families. This tap is intended for use with a tap wrench and cutting fluid appropriate to the workpiece material.

Key Features

• Bottoming chamfer for threading blind holes to maximum depth
• High speed steel construction for durability across common workpiece materials
• Bright uncoated finish suitable for general-purpose hand tapping
• 4-flute straight flute design for efficient chip clearance in through and blind holes
• Right-hand thread direction, class 3B fit, H3 thread limit for precise tolerance control
• 9/16-27 UNS thread form for specialty thread applications

Compatibility

Designed as an OEM-style hand tap for manual threading operations requiring a 9/16-27 UNS bottoming thread form in metalworking, maintenance, and repair applications.

Installation Notes

This tap is installed by machinists and maintenance technicians using a standard tap wrench. Always use an appropriate cutting fluid for the workpiece material to extend tool life and improve thread finish. Ensure the hole is properly sized with the correct tap drill before beginning the threading operation. If following a plug or taper tap in a blind hole, clear chips frequently to prevent tap breakage.