Value Collection JY4844197 Hand Tap 1/2-24 Uns Plug Hss

Product Description

The VALUE COLLECTION JY4844197 is a 1/2-24 UNS straight flute hand tap designed for threading operations in metalworking and machining applications. Built from high speed steel (HSS) with a bright, uncoated finish, this tap cuts right-hand internal threads to a Class 3B fit with an H3 thread limit, making it suitable for close-tolerance work. The plug chamfer — typically 3 to 5 threads of lead — allows easy starting in through-holes or partially threaded holes. With 4 straight flutes, this tap works effectively in a range of materials when used with appropriate cutting fluid. Overall length is 3.375 inches and the tap weighs 0.12 pounds. Intended for use by machinists, maintenance technicians, and tool-and-die professionals.

This tap is used wherever a 1/2-24 UNS internal thread is required, including general maintenance, repair, and original equipment manufacturing environments. The UNS (Unified National Special) thread form at 24 threads per inch is less common than standard UNC or UNF pitches, so this tap addresses specialty threading needs in mechanical assemblies, fluid fittings, and precision components. It is suited for bench work and manual tapping in drill presses or tapping fixtures where controlled feed is maintained. Bright finish is appropriate for use with cutting oils on ferrous and non-ferrous materials.

Key Features

• 1/2-24 UNS thread form for specialty pitch applications not covered by standard UNC or UNF taps
• High speed steel construction provides hardness and wear resistance for general-purpose tapping
• Plug chamfer with 3-5 lead threads allows easy entry in through-holes and open-end blind holes
• 4-flute straight flute geometry delivers balanced cutting and adequate chip clearance for most materials
• Class 3B fit with H3 thread limit ensures close-tolerance internal thread production
• Bright, uncoated finish compatible with standard cutting oils and tapping fluids

Compatibility

Designed as an OEM-style hand tap for any application requiring a 1/2-24 UNS right-hand internal thread to Class 3B tolerance.

Installation Notes

This tap is installed by machinists or maintenance technicians using a tap wrench, tapping fixture, or drill press with a tapping attachment. Always ensure the workpiece is securely clamped and the pilot hole is drilled to the correct tap drill diameter for a 1/2-24 thread before starting. Apply cutting fluid throughout the operation and back off periodically to break chips and prevent tap binding or breakage. Never force a tap in a blind hole without confirming adequate chip clearance.