Value Collection MSC-04619615 Spiral Flute Tap 1/2-13 Unc

Product Description

The VALUE COLLECTION MSC-04619615 is a spiral flute tap designed for cutting internal threads in through-holes and moderately deep blind holes where chip evacuation is critical. Built from high-speed steel (HSS) with a bright uncoated finish, it cuts a 1/2-13 UNC right-hand thread to a 3B class of fit. The 45-degree helix angle and fast flute style pull chips up and out of the hole during the tapping operation, reducing the risk of chip packing. With a modified bottoming chamfer, it can thread closer to the bottom of a blind hole than a standard plug tap while still offering controlled lead-in. Overall length is 3-3/8 inches and the part weighs 0.09 pounds.

This tap is suited for general machining, maintenance, and repair work on ferrous and non-ferrous materials where a 1/2-13 UNC thread is required. The H3 thread limit designation makes it appropriate for standard tolerance threading applications. It is commonly used in machine shops, fabrication environments, and field maintenance by machinists, tool-and-die workers, and industrial maintenance technicians working with manual tapping equipment or CNC machine tools running rigid tapping cycles.

Key Features

• 1/2-13 UNC thread form, 3B class of fit for standard tolerance internal threads
• 45-degree right-hand spiral flute geometry evacuates chips upward out of the hole
• Modified bottoming chamfer allows threading closer to blind hole floors than a plug tap
• H3 thread limit for consistent fit across standard tolerance applications
• High-speed steel construction provides hardness and wear resistance across a range of workpiece materials
• Bright uncoated finish suitable for use with cutting fluid on most common materials

Compatibility

Designed as a standard 1/2-13 UNC spiral flute tap compatible with manual tap wrenches and machine tap holders accepting the corresponding shank diameter for this tap size.

Installation Notes

Threading operations should be performed by a qualified machinist or maintenance technician. Always use an appropriate cutting fluid matched to the workpiece material to extend tool life and improve thread finish. Ensure the workpiece is securely fixtured and the tap is started square to the hole to prevent tap breakage. When using in a machine tapping application, confirm the spindle speed and feed rate are appropriate for the workpiece material and tap size before engaging.