Hertel R867374-S Bsp Pipe Tap 3/8-19 Rp Plug 4 Flute Hss

Product Description

The HERTEL R867374-S is a British Standard Pipe tap designed for cutting internal Rp (BSPRP) parallel pipe threads in metal workpieces. Sized at 3/8-19, it produces threads compliant with the British Standard Pipe Parallel specification, which is common in fluid and pneumatic system fittings. The plug chamfer allows the tap to start easily in a pre-drilled hole and progress through the full thread depth in a single pass. Manufactured from high speed steel with a bright finish, it delivers consistent performance across a range of ferrous and non-ferrous materials. The 4-flute geometry provides good chip control and thread form accuracy. Overall length is 2-9/16 inches with a thread length of 1-1/16 inches.

This tap is suited for machinists, pipefitters, and maintenance technicians working on hydraulic manifolds, pneumatic fittings, and fluid-line components that use BSPRP parallel thread connections. It is appropriate for both production and repair applications in industrial, HVAC, and mechanical service environments where BSP pipe thread standards are specified rather than NPT.

Key Features

• 3/8-19 Rp (BSPRP) parallel pipe thread form for BSP-standard fittings
• Plug chamfer for easy starting and full thread cutting in through or blind holes
• 4-flute design for efficient chip evacuation and consistent thread form
• High speed steel construction for durability across a range of materials
• Bright finish with no coating buildup, maintaining close dimensional tolerances
• Overall length of 2-9/16 inches accommodates standard tap wrenches and machine holders

Compatibility

Designed for use in any application requiring a 3/8-19 Rp (BSPRP) parallel internal pipe thread. Compatible with standard tap wrenches, T-handle drivers, and CNC or manual tapping heads accepting straight-shank tooling of the appropriate diameter.

Installation Notes

This tap should be installed by a qualified machinist or pipefitter familiar with BSP thread standards and proper tapping procedures. Always drill the correct tap drill size for 3/8-19 BSPRP before tapping, and use an appropriate cutting fluid to extend tool life and improve thread finish. Secure the workpiece firmly before starting the tap to prevent misalignment and thread damage. Do not force the tap if resistance increases suddenly; back off to clear chips and re-apply cutting fluid.