Value Collection MSC-04470233 Tap Set 1/4-20 Unc Hss

Product Description

The VALUE COLLECTION MSC-04470233 is a 3-piece tap set configured for 1/4-20 UNC threads, designed for cutting internal threads in metalworking and mechanical assembly applications. Built from high-speed steel (HSS) with a bright, uncoated finish, the set delivers reliable thread cutting performance in a range of ferrous and non-ferrous materials. Each tap measures 2.5 inches overall length with a 1-inch thread length, and features a 4-flute geometry with a right-hand thread direction. The H3 thread limit designation indicates a tolerance class suited for standard thread-fit applications. This set is well suited for machinists, maintenance technicians, and trade professionals performing threaded hole work in the field or shop.

This tap set is appropriate for use in general manufacturing, HVAC equipment assembly, plumbing fixture fabrication, and maintenance repair operations where 1/4-20 UNC threaded holes are required. The right-hand configuration covers the most common thread direction encountered in standard fastener applications. The 3-piece progression — typically taper, plug, and bottoming — allows the user to start, advance, and finish threads in through-holes or blind holes. Suitable for use in drill press setups, tapping fixtures, or hand-tapping operations.

Key Features

• 1/4-20 UNC thread form — one of the most common fastener thread sizes in trade applications
• High-speed steel construction provides hardness and heat resistance for cutting steel, aluminum, and brass
• 4-flute design promotes chip evacuation and clean thread formation
• H3 thread limit for standard tolerance fits in production and repair work
• Bright, uncoated finish — no coating interference in applications with tight tolerance requirements
• 3-piece set covers taper, plug, and bottoming tap functions in a single package

Compatibility

Designed for cutting 1/4-20 UNC right-hand internal threads in metalworking, fabrication, and mechanical maintenance applications. Compatible with standard tap wrenches and tapping handles sized for 1/4-inch shank tooling.

Installation Notes

Use of these taps should follow standard threading practice: secure the workpiece firmly, use appropriate cutting fluid for the material being tapped, and align the tap perpendicular to the drilled hole surface before beginning. Apply steady, consistent pressure and back off periodically to break chips when tapping blind holes. Do not force a tap that has seized — back it out carefully to avoid breakage. Proper pilot hole sizing per UNC drill chart recommendations is required before tapping.