Somta Somta Series 571 - HSS Straight Flute Parallel Pipe Bottom (Finishing) Tap BSP-G 1/4 x 19 TPI

HSS Bottom Tap BSP-G 1/4’ x 19 – Somta Series 571

The SOMTA 5710643 – 1/4’ x 19 BSP-G HSS Bottom Tap is designed for producing full-depth, high-precision parallel pipe threads in blind holes. Ideal for sealing or pressure applications, this bottoming tap features a short chamfer that enables thread cutting close to the hole base. Crafted from premium High-Speed Steel (HSS), it provides excellent wear resistance and a long service life, making it suitable for tapping in steel, cast iron, brass, and non-ferrous alloys.

• Bottoming Chamfer (1-2 Threads) – Enables full-depth thread cutting in blind-hole applications.
• BSP-G Thread Form – British Standard Pipe Parallel thread, 1/4’ diameter with 19 TPI.
• Straight Flute Geometry – Promotes clean chip evacuation and consistent thread formation.
• High-Speed Steel (HSS) – Offers superior cutting edge retention and toughness under load.
• Bright Finish – Enhances surface finish and reduces friction during cutting.
• Hand or Machine Compatible – Suitable for manual tap wrenches, tapping arms, or CNC machines.

• Part No: 5710643
• Thread Size: 1/4’ x 19 TPI
• Thread Standard: BSP-G (British Standard Pipe – Parallel)
• Tap Type: Bottoming (short chamfer for blind holes)
• Flute Style: Straight flute
• Cutting Direction: Right-hand
• Material Finish: High-Speed Steel (HSS), Bright
• Standard: ISO 228 / BS 2779

• Optimized for Blind Holes – Short chamfer allows threading near the bottom of the hole.
• Reliable BSP Threading – Ensures leak-tight and dimensionally accurate pipe threads.
• Durable HSS Construction – Delivers consistent results even under repetitive use.
• Versatile Use – Suitable for general engineering, plumbing, and hydraulic system fabrication.

The SOMTA 5710643 is your go-to tool for producing precise, full-depth BSP parallel threads in blind-hole pipe fitting applications. Built to last, it’s trusted in workshops and production environments alike.