Value Collection JY4874202 Hand Tap 1-1/2-20 Uns Plug Hss

Product Description

The VALUE COLLECTION JY4874202 is a 1-1/2-20 UNS straight-flute hand tap designed for cutting internal threads in ferrous and non-ferrous materials. Built from high speed steel (HSS) with a bright uncoated finish, this tap delivers reliable performance in general-purpose threading applications. The plug chamfer style — with a standard lead-in of roughly 3 to 5 threads — makes it suitable for through-holes and blind holes where adequate thread clearance is available. With 6 flutes and a 3B class of fit at an H4 thread limit, it produces precise, consistent threads that meet UNS tolerance standards. Right-hand thread direction applies. Overall length is 4 inches.

This hand tap is intended for use in machine shop, maintenance, and production environments where 1-1/2-20 UNS internal threads are required. It is well-suited for manual tapping operations using a tap handle or tapping attachment, and is appropriate for threading steel, cast iron, aluminum, and similar workpiece materials. Machinists, tool and die makers, and maintenance technicians typically select this tap for repair threading and new-hole threading tasks in industrial and manufacturing settings.

Key Features

• 1-1/2-20 UNS thread specification for unified national special applications
• High speed steel construction for durability in a wide range of materials
• Bright uncoated finish — ready for use as supplied, no coating to chip or flake
• 6-flute straight-flute design promotes chip control and thread quality
• Plug chamfer for versatile use in through-holes and accessible blind holes
• 3B class of fit with H4 thread limit ensures consistent, tolerance-conforming threads

Compatibility

Designed as an OEM-style replacement or direct-use hand tap for any application requiring a right-hand 1-1/2-20 UNS internal thread in standard 3B fit tolerance.

Installation Notes

This tap is installed by machinists and maintenance technicians using a properly sized tap handle or tapping wrench. Always secure the workpiece before tapping and ensure the tap is started square to the hole to prevent breakage or thread misalignment. Apply appropriate cutting fluid for the workpiece material to extend tap life and improve thread finish. Never force a tap — back off periodically to break chips, especially in deeper holes.