Value Collection JY4838694 Straight Flute Tap 12-32 Unef

Product Description

The VALUE COLLECTION JY4838694 is a straight flute bottoming tap designed for cutting 12-32 UNEF internal threads in blind holes and through holes where full thread depth close to the bottom is required. Manufactured from high-speed steel with a bright uncoated finish, it delivers consistent cutting performance across a range of ferrous and non-ferrous materials. The tap features 4 flutes, a 3B class of fit, and an H3 thread limit, providing controlled dimensional accuracy suited to precision threaded assemblies. Overall length is 2.375 inches. Right-hand thread direction. Intended for use by machinists, tool and die makers, and maintenance technicians.

This tap is suited for production and maintenance applications requiring 12-32 UNEF threads. The bottoming chamfer — typically 1 to 2 thread leads — allows threading to within a few threads of a blind hole bottom, making it the correct choice when a plug or taper tap cannot achieve adequate thread engagement depth. Typical applications include instrument components, thin-panel fastening, and precision mechanical assemblies where fine thread pitch and tight fit class are specified.

Key Features

• Bottoming chamfer for threading close to the bottom of blind holes
• 12-32 UNEF thread form for fine-pitch unified external fastener compatibility
• High-speed steel construction for durability across a range of workpiece materials
• H3 thread limit for consistent fit within 3B class of fit tolerance
• 4 straight flutes for chip clearance in through and blind hole applications
• Bright uncoated finish — suitable for use with standard cutting fluids

Compatibility

Designed as an OEM-style replacement or standard tooling selection for machines and fixtures requiring 12-32 UNEF bottoming taps with a 3B class of fit and H3 thread limit.

Installation Notes

Installation of this tap should be performed by a qualified machinist or maintenance technician using a properly aligned tap handle, machine spindle, or tapping head. Always secure the workpiece firmly and apply appropriate cutting fluid for the material being tapped. Back off periodically to break chips and clear flutes, particularly in deeper blind holes. Power down and lock out any machine before changing or inspecting tooling.