Value Collection MSC-04470316 Tap Set 1/4-28 Unf 3 Piece

Product Description

The VALUE COLLECTION MSC-04470316 is a 3-piece tap set designed for cutting 1/4-28 UNF internal threads in metal workpieces. Built from high-speed steel (HSS) with a bright, uncoated finish, this set handles standard unified fine-thread applications across maintenance, repair, and fabrication work. The 4-flute geometry provides clean chip evacuation and consistent thread form. Overall length is 2.5 inches, with a 1-inch thread length. Thread direction is right hand, and the thread limit is H3, making it suitable for general-purpose tapping in through-holes and blind holes where standard tolerance class fits are specified.

This tap set is intended for use in metalworking environments including machine shops, maintenance facilities, and field repair applications. It is suited for threading operations in ferrous and non-ferrous materials where 1/4-28 UNF fastener compatibility is required. The 3-piece set typically includes taper, plug, and bottoming taps, covering the full range of starting, intermediate, and finishing operations in a single kit. Machinists, millwrights, and maintenance technicians are the primary users of this type of set.

Key Features

• 1/4-28 UNF thread profile for unified fine-thread applications
• High-speed steel construction for durability across a range of metals
• 4-flute design promotes efficient chip removal during tapping
• H3 thread limit for standard general-purpose tolerance fits
• 2.5-inch overall length with 1-inch thread length
• Bright, uncoated finish — 3-piece set for taper, plug, and bottoming operations

Compatibility

Designed for use in any application requiring a 1/4-28 UNF right-hand internal thread, compatible with standard tap wrenches and tapping heads that accept straight-shank taps.

Installation Notes

Tapping operations should be performed by qualified machinists or maintenance technicians familiar with proper speeds, feeds, and cutting fluid selection for the workpiece material. Always secure the workpiece and use an appropriate tap wrench or machine holder to maintain axial alignment and prevent tap breakage. Apply cutting fluid throughout the operation to extend tap life and improve thread quality. Back the tap off periodically to break chips when working in blind holes.