Value Collection JY4861175 Hand Tap 1-1/16-14 Uns Hss

Product Description

The VALUE COLLECTION JY4861175 is a straight-flute hand tap designed for cutting 1-1/16-14 UNS internal threads in a variety of materials. It is ground from high speed steel (HSS) and left uncoated with a bright finish, suitable for general-purpose threading in machine shops, maintenance environments, and field repair applications. The plug chamfer — featuring approximately 3 to 5 threads of lead — allows the tap to start easily in through-holes or blind holes with sufficient depth. With four flutes and an H4 thread limit, this tap holds tight tolerances required for Class 3B fit applications. Overall length is 5.125 inches.

This tap is intended for manual hand-tapping operations using a tap wrench or T-handle. The 1-1/16-14 UNS thread form is a unified national special designation, meaning thread count and form follow unified standards but fall outside the standard UNC and UNF series. This makes the tap well-suited for replacement threading work on specialty fastener applications, fluid fittings, and custom mechanical assemblies where this specific thread combination is required. It is a single-tap purchase, packaged individually.

Key Features

• 1-1/16-14 UNS thread form for unified national special threading applications
• Plug chamfer provides 3 to 5 threads of lead for easy starting in through-holes and adequate-depth blind holes
• High speed steel construction offers hardness and wear resistance for threading steel, cast iron, and similar materials
• Four straight flutes for chip clearance in hand-tapping operations
• H4 thread limit holds Class 3B fit tolerances for precise thread engagement
• Bright uncoated finish — no coating buildup affecting thread geometry
• 5.125-inch overall length accommodates standard tap wrench chucks

Compatibility

Designed for use in applications requiring a 1-1/16-14 UNS internal thread. Suitable for hand-tapping operations where Class 3B fit and H4 thread limit are specified.

Installation Notes

This tap is installed by a machinist or maintenance technician using a tap wrench. The workpiece should be secured in a vise before tapping begins, and the correct tap drill diameter for a 1-1/16-14 UNS thread should be confirmed from a standard thread chart prior to drilling. Apply cutting fluid appropriate to the workpiece material to reduce heat and extend tap life. Advance the tap gradually and back off periodically to break chips and prevent tap breakage.