Balax 10524-010 Thread Forming Tap 3-48 Unc Bottoming Hss

Product Description

The BALAX 10524-010 is a thread forming tap designed for creating internal threads in blind holes without cutting chips. It operates by cold-forming material rather than removing it, which produces stronger threads and eliminates chip-related problems in blind hole applications. Made from high-speed steel with a bright uncoated finish, this tap is sized for 3-48 UNC threads and carries a 2B class of fit. The bottoming chamfer style - with 2.5 chamfered threads - allows the tap to thread close to the bottom of a blind hole. The H4 thread limit designation helps machinists and tooling technicians select the right tap for the required thread tolerance range.

This tap is suited for production and repair threading operations in blind holes where chip evacuation is a concern. The bottoming configuration makes it appropriate for use after a plug or taper tap has started the thread, or wherever threading must extend as deep as possible into a closed-bottom hole. It is used by machinists, toolmakers, and maintenance technicians working on small-diameter fastener threads in ferrous and non-ferrous materials. The BXB series designation identifies it within the BALAX thread forming product line.

Key Features

• Thread forming design cold-forms threads without cutting chips, improving thread strength in blind holes
• Bottoming chamfer with 2.5 chamfered threads for threading close to the bottom of blind holes
• High-speed steel construction for durability across a range of workpiece materials
• 2B class of fit with H4 thread limit for consistent, in-tolerance thread production
• Right-hand thread direction, 3-48 UNC sizing
• No oil grooves - designed for use with flood or applied cutting fluid on the tool exterior

Compatibility

Designed for blind hole threading operations requiring a 3-48 UNC internal thread with a 2B class of fit. Compatible with standard tap holders and collets sized for a 0.1410-inch shank diameter and a 0.1100-inch square drive.

Installation Notes

Thread forming taps require a specific tap drill size matched to the material and desired thread engagement - consult a thread forming tap drill chart before drilling. Apply threading fluid to the tap before use, as thread forming generates more torque than cutting taps and adequate lubrication is critical. Secure the workpiece and use a calibrated tap handle or tapping head to maintain axial alignment and avoid tap breakage. Always verify hole depth before tapping to ensure clearance for the full threaded length.