Value Collection JY66556184 Straight Flute Tap 1/2-36 Uns

Product Description

The VALUE COLLECTION JY66556184 is a straight flute tap designed for cutting 1/2-36 UNS internal threads in a wide range of metalworking applications. Built from high-speed steel (HSS) with a bright, uncoated finish, this tap delivers consistent thread quality in both production and maintenance environments. The bottoming chamfer configuration allows threading to the bottom of blind holes, making it well suited for close-tolerance work where full thread depth is required. With 4 flutes and an H3 thread limit, it holds tight dimensional control and is classified for 3B fit, the standard close-tolerance class for most threaded fastener assemblies.

This tap is used in machining operations requiring UNS (Unified National Special) threads at a 1/2-inch diameter with 36 threads per inch. The 1/2-36 UNS pitch is a non-standard combination found in precision instrument work, firearm components, and specialty mechanical assemblies. It is installed by machinists and tool-and-die professionals using a standard tap wrench or machine tapper. Right-hand thread direction means it cuts with a conventional clockwise rotation. Overall length is 3-3/8 inches with a thread length of 1-21/32 inches.

Key Features

• Bottoming chamfer allows threading to the base of blind holes
• 4-flute design provides chip control and thread stability during cutting
• H3 thread limit ensures consistent tolerance control for 3B class of fit
• High-speed steel construction handles a broad range of workpiece materials
• Right-hand thread direction for standard clockwise tap operation
• Bright, uncoated finish suitable for use with cutting oil or tapping fluid

Compatibility

Designed for use in applications requiring 1/2-36 UNS right-hand internal threads with a 3B class of fit.

Installation Notes

This tap is installed by qualified machinists or tool-and-die technicians using a tap wrench, tapping head, or CNC machine spindle. Always secure the workpiece firmly and use an appropriate cutting fluid to extend tap life and improve thread finish. For blind-hole applications, clear chips frequently to prevent tap breakage. Follow applicable shop safety practices and ensure the spindle speed and feed rate are appropriate for the workpiece material.