RUKO HGB DIN 5157 HSS 55° Rp 3/8 handtap

Cutting precise parallel pipe threads by hand can be challenging, but the RUKO HGB DIN 5157 HSS 55° Rp 3/8 Hand Tap makes it straightforward. This finishing tap is engineered for creating BSPP threads in steel, cast iron, and non-ferrous metals, delivering clean, accurate results every time.

Who is it for

This tap is ideal for machinists, plumbers, and maintenance professionals who need to produce reliable 3/8 inch parallel pipe threads manually. It suits workshops and field service where a high-quality hand tap is essential.

Main features

• Conforms to DIN 5157 (ISO 7-1) for parallel pipe threads
• 55° flank angle with 19 TPI for standard BSPP threads
• Made from high-speed steel (HSS-G) with a bright finish for durability
• Straight flute design with 4 flutes for efficient chip removal
• Ground manufacturing process ensures precision

Specifications

• Thread standard: DIN 5157 (ISO 7-1)
• Thread type: Parallel pipe thread (Rp)
• Nominal thread size: 3/8 inch
• Pitch: 1.337 mm (19 TPI)
• Flank angle: 55°
• Material: High-speed steel (HSS-G)
• Application type: Hand tap
• Thread direction: Right-hand
• Overall length: 90 mm
• Thread length: 28 mm
• Shank diameter: 10 mm
• Square drive size: 8 mm
• Number of flutes: 4
• Cutting edge geometry: Straight flute
• Surface treatment: Bright finish
• Recommended material group: Steel, cast iron, non-ferrous metals
• Tolerance class: Medium
• Tap type: Finishing tap
• Equivalent standard: BSPP

Tips

Use a suitable tap wrench with an 8 mm square drive. Apply cutting oil to improve thread finish and tool life. For through holes, consider using a taper tap first to ease the cutting process.