Value Collection JY4873147 Straight Flute Tap 1-7/16-16

Product Description

The VALUE COLLECTION JY4873147 is a straight flute tap designed for cutting internal threads in a 1-7/16-16 UNS thread form. Manufactured from high-speed steel with a bright/uncoated finish, this tap delivers the hardness and edge retention needed for threading steel, cast iron, and similar ferrous materials. The plug chamfer allows the tap to start threading several threads from the entry point, making it suitable for through-holes and blind holes with sufficient depth. Six flutes provide good chip clearance and cutting performance at standard threading speeds. Overall length is 4 inches, and the tool weighs 1.3 pounds.

This tap is intended for machine-shop and production threading operations where a 1-7/16-16 UNS specification is required. The right-hand thread direction and 3B class of fit make it appropriate for general-purpose fastening applications requiring a standard tolerance fit. The H4 thread limit designation indicates the tap is sized for use with standard H4 tolerance range threading, suitable for a variety of medium-tolerance threaded assemblies. Machinists and tool-room technicians working with UNS thread forms will find this tool suited to both manual tapping machines and CNC tapping operations.

Key Features

• 1-7/16-16 UNS thread form with right-hand thread direction
• 6 flutes for effective chip evacuation during threading
• Plug chamfer for versatile use in through-holes and sufficiently deep blind holes
• High-speed steel construction for durability across ferrous materials
• 3B class of fit with H4 thread limit for standard-tolerance threaded assemblies
• Bright/uncoated finish — no coating buildup to affect thread tolerance

Compatibility

Designed as an OEM-style replacement or direct-use threading tool for applications requiring a 1-7/16-16 UNS internal thread in standard 3B class of fit. Suitable for use with tapping heads, turret lathes, drill presses, and CNC machining centers capable of accepting this tap size.

Installation Notes

This tap should be installed and operated by qualified machinists familiar with threading tool setup and tapping speeds appropriate for high-speed steel tooling. Secure the tap in a properly sized tap holder or chuck before operation, and ensure the workpiece is firmly fixtured. Apply a suitable cutting fluid for the workpiece material to extend tool life and improve thread quality. Inspect the tap for wear or chipping before each use, and do not force the tap if resistance increases unexpectedly.