Balax 10523-010 Thread Forming Tap 3-48 Unc Bottoming Hss

Product Description

The BALAX 10523-010 is a thread forming tap designed for blind hole threading in small-diameter applications. It cuts a 3-48 UNC thread profile with a bottoming chamfer of 2.5 threads, allowing threads to be formed close to the bottom of a blind hole. Made from high-speed steel with a bright uncoated finish, this tap is built for use in soft to medium-hardness materials where cold-forming is preferred over cutting. The H3 thread limit supports a Class 3B fit. No coolant-through feature is present, so flood or manual lubrication applies during use.

This tap is suited for small-part machining, instrument work, and precision assembly applications where a 3-48 UNC thread is required in a blind hole. The bottoming chamfer style makes it the correct choice when thread engagement must extend to near the bottom of the hole. It is used by machinists, tool and die technicians, and maintenance professionals working with miniature fastener threads in metal components.

Key Features

• Bottoming chamfer with 2.5 chamfered threads for threading close to the bottom of blind holes
• 3-48 UNC thread profile with right-hand thread direction
• H3 thread limit for Class 3B fit tolerance
• High-speed steel construction for durability in soft to medium materials
• Bright uncoated finish - no additional coating to affect thread geometry
• No oil grooves - fluteless thread forming design displaces material rather than cutting chips

Compatibility

Designed as an OEM-style thread forming tap for blind hole applications requiring a 3-48 UNC thread form. Part of the BALAX BXB series.

Installation Notes

Thread forming taps require a specific tap drill size to achieve the correct material displacement - consult a thread forming drill chart for the 3-48 UNC form before drilling. Use appropriate tapping fluid for the workpiece material. Secure the workpiece before tapping and apply steady, consistent torque to avoid tap breakage at this small diameter. This tap is intended for use by trained machinists or maintenance technicians familiar with thread forming operations.