Value Collection JY4870143 Straight Flute Tap 1-1/4-16 Uns

Product Description

The VALUE COLLECTION JY4870143 is a straight flute tap designed for cutting internal threads in ferrous and non-ferrous materials. Built from high-speed steel with a bright uncoated finish, this tap produces a 1-1/4-16 UNS right-hand thread to a 3B class of fit with an H4 thread limit. The plug chamfer style provides a balanced entry for through-hole and moderately deep blind-hole applications. With 6 flutes, the tap distributes cutting load evenly and offers good chip clearance in a range of materials. Machinists, tool and die makers, and maintenance technicians rely on this configuration for precise threading work in production and repair settings.

This tap is suited for threading operations that call for a 1-1/4-16 UNS thread form, commonly found in custom mechanical assemblies, fluid fittings, and industrial equipment where a unified national special thread pitch is specified. The plug chamfer makes it appropriate for general-purpose tapping on manual machines, CNC machining centers, and drill presses equipped with a tapping head or floating tap holder. The 4-inch overall length provides adequate reach for standard workpiece depths without excessive overhang.

Key Features

• 1-1/4-16 UNS thread form with right-hand direction for standard threading operations
• 3B class of fit and H4 thread limit for controlled tolerance threading
• 6-flute design distributes cutting forces and supports chip evacuation
• Plug chamfer style suits through-holes and moderately deep blind holes
• High-speed steel construction provides durability across a broad range of workpiece materials
• Bright uncoated finish allows direct visual inspection of tool condition

Compatibility

Designed as a standard replacement or production tap for applications requiring a 1-1/4-16 UNS internal thread in general machining, maintenance, and repair operations.

Installation Notes

This tap should be installed by qualified machinists or tooling technicians familiar with threading operations. Always ensure the workpiece is securely clamped and the tap is properly aligned with the pilot hole before beginning the threading cycle. Use appropriate cutting fluid for the workpiece material to extend tool life and improve thread finish. Inspect the tap for wear or chipping before each use and replace if damage is observed.