Hertel R867348-S 3/4-14 Nptf Pipe Tap 5 Flute Hss

Product Description

The HERTEL R867348-S is an interrupted thread pipe tap designed to cut 3/4-14 NPTF (National Pipe Taper Fuel) threads in metal workpieces. The interrupted thread geometry alternates cutting teeth with gaps, reducing torque, improving chip evacuation, and lowering the risk of tap breakage in difficult materials. The 5-flute configuration and high speed steel construction make it well-suited for production tapping in ferrous and non-ferrous materials. The bright (uncoated) finish is standard for general-purpose HSS taps. Overall length is 3.25 inches. This tool is used by machinists, pipefitters, and maintenance technicians who need precision NPTF pipe thread tapping.

The R867348-S produces NPTF tapered pipe threads that provide a pressure-tight mechanical seal without sealant, making it appropriate for hydraulic, pneumatic, fuel, and fluid system connections. It is suited for job shop and production environments where interrupted thread geometry reduces the chip-packing and galling that can occur when tapping blind holes or tough alloys. Typical applications include threading ports in manifolds, hydraulic blocks, fittings, and pipe flanges.

Key Features

• 3/4-14 NPTF thread form produces pressure-tight tapered pipe threads
• Interrupted thread design reduces torque and improves chip clearance
• 5-flute geometry increases cutting edges for smoother thread finish
• High speed steel construction withstands heat generated in production tapping
• Bright finish suitable for use with a wide range of cutting fluids
• 3.25-inch overall length accommodates standard tap wrenches and machine holders

Compatibility

Designed for use in standard 3/4-14 NPTF tapping applications. Compatible with hand tap wrenches, drill press setups, and CNC tapping attachments that accept this shank size and overall length.

Installation Notes

Always secure the workpiece firmly and use an appropriate cutting fluid or tapping compound for the material being threaded. Ensure the tap is started square to the hole to prevent cross-threading or tap breakage. For machine tapping, use a floating tap holder to compensate for minor misalignment. Follow shop safety protocols and wear appropriate eye protection when operating tapping equipment.