Value Collection JY4848230 Hand Tap 7/8-24 Uns Bottoming Hss

Product Description

The VALUE COLLECTION JY4848230 is a 7/8-24 UNS bottoming hand tap manufactured from high speed steel with a bright uncoated finish. Designed for cutting internal threads in through-holes and blind holes that require threads extended close to the bottom, this tap features a 4-flute straight-flute geometry that promotes chip evacuation and consistent thread form. The right-hand thread direction and Class 3B fit make it suitable for precision threading applications where tight tolerances are required. Overall length is 4-11/16 inches. Machinists, tool-and-die makers, and maintenance technicians use this tap for hand-tapping operations in ferrous and non-ferrous materials.

This tap is suited for production and maintenance threading work where a 7/8-24 UNS thread form is specified. The bottoming chamfer — typically 1 to 2 thread lead — allows threading to within a few threads of the bottom of a blind hole. It is commonly used in manual hand-tapping setups with a tap wrench, and can also be used as a finishing tap following a taper or plug tap to complete a blind-hole thread. Applications span general machining, repair work, and fabrication across industrial and maintenance environments.

Key Features

• Bottoming chamfer for threading close to the bottom of blind holes
• High speed steel construction provides hardness and wear resistance for hand-tapping operations
• Bright uncoated finish suitable for general-purpose threading in a range of materials
• 4-flute straight-flute design supports consistent thread form and chip clearance
• Class 3B fit with H4 thread limit for tight-tolerance internal thread applications
• Right-hand thread direction, standard UNS thread form

Compatibility

Designed for use in any application requiring a 7/8-24 UNS Class 3B internal thread. Compatible with standard tap wrenches and holders sized for 7/8-inch taps.

Installation Notes

This tap is installed by qualified machinists or maintenance technicians using a tap wrench or appropriate tapping fixture. Always ensure the workpiece is securely fixtured and the tap is started square to the hole to prevent tap breakage or cross-threading. Use appropriate cutting fluid for the workpiece material to extend tap life and improve thread finish. When tapping blind holes, frequently back off the tap to break chips and prevent binding.