Accupro T1640345 Spiral Point Tap 10-32 3 Flutes Hss-e

Product Description

The ACCUPRO T1640345 is a spiral point tap designed to cut right-hand internal threads in a 10-32 unified fine thread form. Built from HSS-E vanadium high speed steel and finished with a black oxide coating, it provides good wear resistance and heat tolerance during tapping operations. The plug chamfer geometry distributes cutting load across the first few threads, making it well suited for through-hole tapping applications. With 3 flutes and a spiral point design, the tap pushes chips forward ahead of the cut to reduce chip packing and help maintain clean thread formation. Licensed machinists and maintenance mechanics typically reach for this tap in production and repair work involving small-diameter fastener threads.

This tap targets through-hole threading in steel, aluminum, and other machinable metals at the 10-32 thread size, a thread form common in electronics enclosures, instrument panels, light-duty mechanical assemblies, and general MRO fastener applications. The H5 thread limit tolerance makes it appropriate for standard-fit threading where close dimensional control is required. It is sized for use in standard tap handles, tapping heads, or CNC and manual drill press setups where a 0.194-inch shank diameter is compatible.

Key Features

• 10-32 unified fine thread form for small-diameter through-hole applications
• HSS-E vanadium high speed steel construction for improved toughness and wear resistance over standard HSS
• Black oxide finish reduces friction at the cutting edge and provides mild corrosion resistance during storage
• Plug chamfer distributes cutting force gradually, reducing torque spike on entry
• Spiral point geometry pushes chips forward, keeping flutes clear in through-hole drilling
• H5 thread limit ensures dimensional accuracy for standard-fit threaded connections
• No coolant-through design — suitable for hand tapping and standard machine tapping with applied cutting fluid

Compatibility

Designed as an OEM-style replacement spiral point tap for 10-32 right-hand through-hole threading operations where an H5 thread limit and plug chamfer geometry are specified.

Installation Notes

Machinists and maintenance technicians should ensure the workpiece is securely fixtured and a correctly sized pilot hole is drilled before tapping. Apply appropriate cutting fluid for the workpiece material to extend tap life and improve thread finish quality. Use a calibrated torque handle or tapping head to avoid overloading the tap, as small-diameter taps are susceptible to breakage under sudden torque. Follow shop safety practices and wear appropriate eye protection when operating tapping equipment.