RUKO HGB Hand Tap Set DIN 5157 HSS-G 1/2 inch x 14 TPI, 2-Piece

Precision-ground HSS-G hand tap set for G 1/2" parallel pipe threads, 14 TPI, manufactured to DIN 5157. The set includes taper and plug taps for through and blind holes in steels up to 800 N/mm², malleable cast iron, and non-ferrous metals.

Overview

This two-piece hand tap set cuts G 1/2" (BSPP) parallel pipe threads with 14 threads per inch. The taps are made from high-speed steel (HSS-G) and ground for accurate thread profiles and long tool life. The right-hand cutting direction suits manual tapping with standard tap wrenches.

What stands out

• Set contains taper tap (Vorschneider) and plug tap (Fertigschneider) for sequential threading.
• Ground HSS-G construction provides sharp cutting edges and wear resistance.
• Square shank design ensures secure grip in tap wrenches.
• Bright surface finish reduces chip adhesion.
• ISO 2 tolerance class for standard thread fit.

Technical details

• Thread standard: G (BSPP - British Standard Pipe Parallel)
• Nominal thread size: 1/2 inch
• Threads per inch: 14
• Manufacturing standard: DIN 5157
• Material: High Speed Steel (HSS-G)
• Manufacturing process: Ground
• Cutting direction: Right-hand
• Application: Through holes and blind holes
• Shank type: Square
• Surface finish: Bright
• Tolerance class: ISO 2
• Recommended material hardness: Up to 800 N/mm²
• Suitable materials: Unalloyed and alloyed steels, malleable cast iron, non-ferrous metals
• Coolant recommendation: Appropriate cutting oil or fluid
• Tool compatibility: Manual tap wrenches
• Packaging: Blister pack

Our verdict

A reliable HSS-G hand tap set for cutting precise G 1/2" pipe threads. The ground finish and DIN 5157 compliance make it suitable for professional use in maintenance and manufacturing.