Value Collection MSC-04503561 Spiral Point Tap 3-56 Unf

Product Description

The VALUE COLLECTION MSC-04503561 is a spiral point tap designed for threading 3-56 UNF holes in a wide range of materials. Spiral point geometry pushes chips forward ahead of the cutting edge, making this style well-suited for through-hole tapping operations where chip evacuation matters. The tap is manufactured from high speed steel (HSS) with a bright, uncoated finish and is ground to an H2 thread limit, which provides controlled oversize tolerance for reliable 2B class-of-fit threads. With 2 flutes and a plug chamfer, this tap requires sequential lead threads before reaching full depth, giving the operator positive cutting engagement from the start.

This tap is used in machine shop, maintenance, and light fabrication environments wherever 3-56 UNF threads are required. The plug chamfer makes it appropriate for through-hole applications in ferrous and non-ferrous metals, as well as plastics. It is commonly run in a CNC tapping cycle, a drill press with a floating tap holder, or hand-tapped with a tap wrench for repair work. The right-hand thread direction and standard shank geometry make it compatible with conventional tap holders and collet chucks used in most shop environments.

Key Features

• Spiral point design pushes chips forward for efficient through-hole tapping
• 3-56 UNF thread form with 2B class of fit for standard unified fine thread applications
• H2 thread limit provides controlled tolerance for consistent fit across production runs
• High speed steel construction offers good wear resistance across a range of workpiece materials
• Bright, uncoated finish suits general-purpose use and allows easy visual inspection of cutting edges
• Plug chamfer with 2 flutes provides positive cutting action from thread lead-in

Compatibility

Designed as a general-purpose spiral point tap for through-hole 3-56 UNF tapping operations using standard tap holders, collet chucks, and tap wrenches with a matching drive square.

Installation Notes

This tap is installed and operated by machinists and maintenance technicians. Always secure the workpiece firmly and ensure the tap is aligned perpendicular to the hole before beginning the threading operation. Use appropriate cutting fluid for the workpiece material to extend tap life and reduce the risk of tap breakage. Back off periodically when hand-tapping to break chips, and never force a tap that has seized in the hole.