RUKO HGB DIN 5157 HSS-G 55° Rp 1 Hand Tap for Internal Pipe Threads

Plumbers and pipefitters use this hand tap to cut precise Rp 1 internal pipe threads in steel, non-ferrous metals, and plastics. The HSS-G high-speed steel body with ground flutes provides clean threading in manual operations with a tap wrench.

Key specifications

• Thread standard: DIN 5157 / ISO 7-1
• Thread type: Rp (parallel internal pipe thread)
• Nominal thread size: 1 inch
• Material: HSS-G high-speed steel
• Thread angle: 55° Whitworth
• Thread direction: right-hand
• Tool type: hand tap
• Overall length: 110 mm
• Shank diameter: 18 mm
• Square drive: 14.5 mm
• Threads per inch: 11
• Recommended core hole diameter: 30.29 mm
• Flute type: straight
• Number of flutes: 4
• Surface finish: ground
• Suitable materials: steel, non-ferrous metals, plastics

Why choose it

This tap is made from high-speed steel with a ground finish, ensuring durability and accurate thread profiles for internal pipe threading. The straight flutes and four-flute design allow efficient chip removal during manual operation.

Ideal use cases

• Cutting internal pipe threads in steel pipes
• Threading non-ferrous metal pipes
• Creating threads in plastic pipe fittings
• Manual threading with a tap wrench

Good to know

The tap conforms to DIN 5157 / ISO 7-1 standards for parallel internal pipe threads. It is designed for right-hand threading and requires a core hole diameter of 30.29 mm for Rp 1 threads.