Value Collection MSC-04461182 5/16-18 Unc Plug Hand Tap Hss

Product Description

The VALUE COLLECTION MSC-04461182 is a 5/16-18 UNC straight flute hand tap designed for cutting right-hand internal threads in through holes and blind holes where chip clearance allows. Built from high speed steel (HSS) with a bright uncoated finish, this tap delivers reliable cutting performance across a range of materials including mild steel, aluminum, and plastics. The plug chamfer features a standard 3-5 thread lead, making it the go-to choice for starting and finishing threads in pre-drilled holes. Four flutes provide adequate chip clearance for hand tapping operations. The H2 thread limit designates a controlled oversize tolerance suitable for standard UNC thread fits.

This tap is suited for maintenance, repair, and fabrication work where 5/16-18 UNC threads are required. It is commonly used in general metalworking, machine shops, and field repair applications. The plug chamfer configuration works in both through holes and sufficiently deep blind holes. With an overall length of 2-23/32 inches and a thread length of 1 inch, it fits standard tap wrench drivers used in hand tapping operations by machinists, maintenance technicians, and trade professionals.

Key Features

• 5/16-18 UNC thread form with right-hand cutting direction
• Plug chamfer provides 3-5 thread lead for straightforward starting and finishing
• High speed steel construction for durability across common workpiece materials
• Bright uncoated finish — no coating buildup to affect thread tolerance
• H2 thread limit for controlled oversize fit on standard UNC thread applications
• 4-flute straight flute geometry suitable for hand tapping operations

Compatibility

Designed as a standard hand tap for use with conventional tap wrenches and T-handle drivers sized for 5/16-18 UNC thread cutting applications.

Installation Notes

Hand taps should be installed and driven by a qualified machinist or technician using a properly sized tap wrench. Always drill the correct tap drill diameter for 5/16-18 UNC before tapping, and ensure the hole is deburred. Apply cutting fluid appropriate for the workpiece material to reduce friction and extend tap life. Back the tap off periodically to break chips and prevent tap breakage, especially in blind hole applications.