Value Collection MSC-04609749 Spiral Flute Tap 8-32 Unc

Product Description

The VALUE COLLECTION MSC-04609749 is a spiral flute tap designed for cutting 8-32 UNC internal threads in blind holes and bottom-clearance applications. Built from high-speed steel (HSS) with a bright, uncoated finish, this tap features a 45-degree helix angle and a fast flute style that efficiently evacuates chips up and out of the hole during threading. The bottoming chamfer allows threading close to the base of a blind hole, making it the right choice when thread depth is critical. At 2.125 inches overall length, it fits standard tap holders used in manual and machine tapping setups.

This tap is suited for threading steel, aluminum, brass, and similar machinable materials in production and maintenance environments. The 3-flute spiral design provides good chip clearance in blind hole applications where straight flute taps would pack chips and risk breakage. Machinists, tool and die makers, and maintenance technicians reach for this style when tapping blind holes in fixture plates, machine components, and structural assemblies. The right-hand thread direction and right-hand flute orientation are consistent with standard clockwise rotation in a tap wrench or CNC tapping cycle.

Key Features

• Bottoming chamfer allows threading to near the bottom of blind holes
• 45-degree helix angle and fast flute style for efficient upward chip evacuation
• H3 thread limit holds 2B class of fit tolerances for standard fastener compatibility
• High-speed steel construction provides good toughness across a range of workpiece materials
• Bright, uncoated finish suits general-purpose threading without specialized lubricant requirements
• Right-hand thread and right-hand flute direction for conventional tapping setups

Compatibility

Designed as a general-purpose replacement or stock tap for standard 8-32 UNC blind hole threading operations using conventional tap holders, T-handle tap wrenches, or CNC tapping cycles configured for this thread size.

Installation Notes

This tap is installed and operated by a machinist or maintenance technician using a tap wrench, tapping fixture, or CNC machine tool. Always apply appropriate cutting fluid for the workpiece material before beginning the tapping cycle. Ensure the workpiece is securely clamped and the tap is properly aligned with the drilled pilot hole before applying torque to avoid tap breakage. Do not force the tap if resistance increases sharply — back off to clear chips before continuing.