Somta Series 541 – HSS Bottom Tap UNC 1-3/8″ x 6 TPI

SKU: 5413493

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Sale price$493.10

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Only 2 units left

Description

HSS Bottom Tap UNC 1-3/8″ x 6 – Somta Series 541

The SOMTA 5413493 – 1-3/8″ x 6 UNC HSS Bottom Tap is a heavy-duty threading tool designed for precise thread cutting at full depth in blind holes. Manufactured from high-speed steel (HSS), it features a short chamfer ideal for threading close to the bottom of a drilled hole. Conforming to the Unified National Coarse (UNC) thread profile, this tap delivers accurate and clean threading performance in a wide variety of industrial and fabrication applications.

Key Features & Benefits

  • Bottoming Chamfer (1–2 Threads) – Optimized for threading to full depth in blind hole applications.
  • Unified National Coarse (UNC) – 1-3/8″ diameter with 6 TPI for coarse-thread fastener compatibility.
  • Straight Flute Geometry – Provides controlled chip flow and consistent cutting action.
  • High-Speed Steel (HSS) – Delivers superior durability and cutting efficiency under high-load conditions.
  • Bright Finish – Minimizes friction and promotes smoother threading.
  • Versatile Tapping – Suitable for use with tap wrenches, tapping machines, and other threading tools.

Technical Specifications

  • Part No: 5413493
  • Thread Size: 1-3/8″ x 6 TPI
  • Thread Standard: UNC – Unified National Coarse
  • Tap Type: Bottoming (short chamfer for blind holes)
  • Flute Style: Straight flute
  • Cutting Direction: Right-hand
  • Material Finish: High-Speed Steel (HSS), Bright
  • Standard: ANSI / Unified Inch

Why Choose the SOMTA 5413493 UNC Bottom Tap?

  • Maximum Thread Engagement – Reaches near the bottom of blind holes for strong thread integrity.
  • Coarse Thread Capability – Suited for applications requiring robust, high-load threads.
  • Reliable HSS Tooling – Built to withstand demanding industrial use over time.
  • Trusted by Professionals – Ideal for machining, repair, and heavy fabrication work.

The SOMTA 5413493 bottom tap is the professional's choice for accurate coarse-thread tapping in large-diameter blind holes. Engineered from tough HSS and designed for precision, it delivers consistent performance across steel, aluminum, and other machinable metals.

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