Guhring 9041270141400 Spiral Flute Pipe Tap 1/4-18 Nptf

Product Description

The GUHRING 9041270141400 is a spiral flute pipe tap designed for cutting 1/4-18 NPTF internal pipe threads in blind holes. Built from cobalt high-speed steel with a titanium nitride (TiN) coating, this tap delivers extended tool life in abrasive and hard materials. The 25-degree right-hand helix angle evacuates chips efficiently out of the hole during tapping, reducing the risk of chip packing in blind applications. The modified bottoming chamfer allows threading closer to the bottom of a blind hole than a standard taper or plug chamfer. With 5 flutes and a 14 mm shank diameter, it is suited for use in CNC machining centers and rigid tapping setups where consistent thread quality is required.

This tap is intended for blind hole threading in a range of materials including aluminum, gray cast iron, malleable iron, spheroidal iron, non-ferrous metals, and stainless steel. NPTF thread form produces a pressure-tight seal without the need for thread sealant, making it a standard choice in hydraulic, pneumatic, and fluid-system manifold work. Machinists and tool-and-die professionals typically apply this tap in production environments where repeatable NPTF thread quality is critical. It belongs to the GUHRING Series 4127 spiral flute pipe tap line.

Key Features

• 1/4-18 NPTF thread form for pressure-tight pipe connections without sealant
• Cobalt HSS construction with TiN coating for extended wear resistance
• 25-degree right-hand helix angle for upward chip evacuation in blind holes
• Modified bottoming chamfer enables threading close to the bottom of blind holes
• 5-flute geometry provides stable cutting action and improved thread finish
• 14 mm shank diameter compatible with standard machine tap holders and collets

Compatibility

Designed as a Series 4127 OEM-style spiral flute pipe tap for rigid tapping applications requiring 1/4-18 NPTF threads in blind holes across aluminum, cast iron, malleable iron, spheroidal iron, non-ferrous metals, and stainless steel workpieces.

Installation Notes

This tap is intended for use by machinists in CNC or manual rigid tapping setups. Ensure the spindle is powered down and locked out before changing or inspecting tooling. Use appropriate cutting fluid or coolant matched to the workpiece material to prevent premature tool wear, especially when tapping stainless steel. Do not exceed the tap's rated capacity or attempt to use it in through-hole applications where a taper pipe tap would be more appropriate.