RUKO HGB käsikierretappisarja DIN 5157 HSS-G G 1/8 x 28, 2 osaa

Hand tap set for cutting British Standard Pipe Parallel threads (G 1/8) with 28 threads per inch. The set includes a taper tap and a plug tap, both made from ground high-speed steel (HSS-G) for precise thread cutting in unalloyed and alloyed steels, malleable cast iron, non-ferrous metals, and plastics.

Advantages

Ground flutes and chamfers ensure clean thread profiles and long tool life. The set conforms to DIN 5157 and offers ISO 2 (6H) tolerance class for standard fits.

Suitable for

• Unalloyed and alloyed steels
• Malleable cast iron
• Non-ferrous metals
• Plastics

Key specifications

• Thread standard: G (BSPP)
• Nominal size: 1/8 inch
• Threads per inch: 28
• Material: HSS-G
• Manufacturing standard: DIN 5157
• Cutting direction: right-hand
• Tolerance class: ISO 2 (6H)
• Recommended core hole diameter: 8.8 mm
• Total length: 45 mm
• Thread length: 18 mm
• Shank diameter: 7 mm
• Square drive size: 5.5 mm
• Number of flutes: 3
• Set composition: taper tap and plug tap

Recommendations

Use with suitable cutting oil and tap wrench. Pre-drill with 8.8 mm drill bit for optimal thread engagement.