Value Collection MSC-04427332 Straight Flute Tap 8-32 Unc

Product Description

The VALUE COLLECTION MSC-04427332 is a straight flute tap designed to cut internal threads in through-holes and blind holes where maximum thread depth is required. Manufactured from high-speed steel (HSS) with a bright, uncoated finish, this tap produces 8-32 UNC right-hand threads to a 2B class of fit. The bottoming chamfer — typically 1 to 2 thread leads — allows threading to the bottom of a blind hole, making it the right choice when full thread engagement close to the hole floor is critical. With an H3 thread limit, it holds tight tolerances suitable for standard commercial fastener applications. Licensed machinists, toolmakers, and maintenance mechanics use this tool in manual and machine tapping operations across fabrication, maintenance, and production environments.

This tap is suited for threading work in ferrous and non-ferrous metals, plastics, and similar machinable materials where an 8-32 UNC bottoming thread is specified. The straight flute geometry works best in through-holes or short blind holes where chip evacuation is not a primary concern. It is a common choice for bench work, drill press setups, and CNC tapping when paired with appropriate tapping fluid. The 0.75-inch thread length and 2.125-inch overall length fit standard tap holders and T-handle tap wrenches used in general machine shop and maintenance applications.

Key Features

• Bottoming chamfer allows threading to the base of blind holes for maximum thread engagement
• 4 straight flutes provide rigidity and consistent chip formation in short-chipping materials
• H3 thread limit maintains consistent 2B class of fit for standard UNC fastener compatibility
• High-speed steel construction resists wear across a broad range of machinable materials
• Bright, uncoated finish allows visual wear inspection during use
• Right-hand thread direction compatible with standard tapping equipment and tap holders

Compatibility

Designed as a standard replacement or supplemental tap for any application requiring 8-32 UNC internal threads with a bottoming chamfer and 2B class of fit. Fits standard tap holders, T-handle wrenches, and machine tap adapters sized for straight-shank taps in this diameter range.

Installation Notes

Tapping operations should be performed by qualified machinists or maintenance personnel following standard shop safety practices. Always use an appropriate cutting or tapping fluid to extend tool life and improve thread finish, especially in steel. Secure the workpiece firmly before tapping and align the tap perpendicular to the hole to avoid tap breakage. For hand tapping, advance the tap one half to one full turn forward and then reverse slightly to break chips before continuing.