Balax 10523-01T Thread Forming Tap 3-48 Unc Bottoming Hss Tin

Product Description

The BALAX 10523-01T is a thread forming tap designed to cut 3-48 UNC internal threads in blind holes without producing chips. Made from high-speed steel with a titanium nitride (TiN) coating, this bottoming-style tap is built for close-tolerance work requiring a 3B class of fit and H3 thread limit. The bottoming chamfer - approximately 2.5 thread pitches - allows threading to the bottom of a blind hole. Overall length is 1.8125 inches with a thread length of 0.5 inches and a shank diameter of 0.141 inches. Machinists and maintenance technicians use this tap where a chip-free threading operation is required in ductile metals.

The 10523-01T belongs to the BALAX BXB series and is intended for blind hole threading applications in production and repair environments. The right-hand thread direction and 3-48 UNC size make it a common choice for small-fastener tapping in electronics enclosures, instrument panels, and precision assemblies where thread quality and hole cleanliness are critical. The TiN coating reduces friction and extends tool life compared to uncoated HSS taps, particularly in higher-volume production runs.

Key Features

• Thread forming design displaces material rather than cutting, producing no chips in blind holes
• Bottoming chamfer with 2.5P allows threading close to the bottom of a blind hole
• High-speed steel construction provides toughness and wear resistance
• Titanium nitride coating reduces friction and extends service life
• 3B class of fit with H3 thread limit for close-tolerance 3-48 UNC threads
• Right-hand thread direction, 0.11 inch square drive for standard tap wrenches

Compatibility

Designed for blind hole threading in ductile materials where 3-48 UNC internal threads are required. Compatible with standard tap handles and machine tap holders accepting a 0.141-inch shank diameter and 0.11-inch square drive.

Installation Notes

Thread forming taps require a specific forming hole diameter - do not use standard drill-tap charts for cut taps. Consult BALAX or UNC forming tap charts for the correct forming drill size for 3-48 before machining. Apply appropriate tapping fluid for the workpiece material to reduce torque and tool wear. Secure the workpiece and use a calibrated torque-limiting tap wrench or machine feed to avoid tap breakage in small-diameter applications.