Value Collection MSC-04475125 Straight Flute Tap 9/16-12

Product Description

The VALUE COLLECTION MSC-04475125 is a straight flute plug tap designed for cutting internal threads in through-holes and moderately deep blind holes. Sized at 9/16-12 UNC, it features 4 flutes and is manufactured from high-speed steel (HSS) with a bright, uncoated finish. The plug chamfer — typically 3 to 5 threads of taper — provides a balance between starting ease and thread engagement depth, making it the most common tap style for general-purpose threading work. With an overall length of 3-19/32 inches and a thread length of 1-21/32 inches, this tap is suitable for standard hand tapping and machine tapping applications.

This tap is intended for use in metalworking, maintenance, repair, and fabrication environments. The 9/16-12 UNC thread form is a coarse-pitch Unified National Coarse standard, widely used in structural fastening, machinery assembly, and repair threading across industrial and commercial settings. The H3 thread limit designation indicates a tolerance class suited for standard fits and is compatible with typical tapping operations in steel, cast iron, and similar machinable materials. It is installed by machinists, tool and die makers, and maintenance mechanics using a tap wrench or machine tapping setup.

Key Features

• 9/16-12 UNC thread size with coarse pitch for high-strength fastener applications
• 4-flute straight design provides rigidity and chip control in through-hole and shallow blind-hole tapping
• Plug chamfer (3-5 thread lead) balances starting ease with thread engagement
• High-speed steel construction offers durability across a range of machinable metals
• Bright uncoated finish suitable for use with cutting oil or tapping fluid
• H3 thread limit for standard tolerance fits in general-purpose threading

Compatibility

Designed for cutting 9/16-12 UNC internal threads in standard tapping applications across machinable metals. Fits standard tap wrenches and machine tap holders accepting the shank dimensions of a 9/16-12 size tap.

Installation Notes

This tap is installed by machinists or maintenance mechanics using a tap wrench for hand tapping or a drill press and CNC machine for machine tapping. Always use an appropriate cutting fluid or tapping oil to extend tool life and improve thread finish. Ensure the workpiece is securely clamped and the tap is started square to the drilled hole to prevent thread misalignment or tap breakage. Follow applicable shop safety procedures when operating tapping equipment.