Description
HSS Bottom Tap UNC ½″ x 13 – Somta Series 541
The SOMTA 5411273 – ½″ x 13 UNC HSS Bottom Tap is a precision tool designed for cutting full-depth coarse threads in blind holes. With a bottoming chamfer (1–2 threads), it allows threading close to the base of the hole. Manufactured from high-speed steel (HSS), this tap is engineered for durability and consistent thread quality in steel, aluminum, cast iron, and non-ferrous materials. It conforms to Unified National Coarse (UNC) thread standards, making it a reliable choice for general-purpose and structural threading tasks.
Key Features Benefits
- Bottoming Chamfer – Enables full thread formation in blind holes with minimal clearance.
- UNC Thread Standard – ½″ x 13 TPI for standard coarse-threaded connections.
- Straight Flute Geometry – Delivers controlled chip flow and clean cutting action.
- High-Speed Steel (HSS) – Ensures tool strength, wear resistance, and extended life.
- Bright Finish – Reduces friction and improves thread surface finish.
- Hand or Machine Use – Suitable for manual tapping or powered equipment.
Technical Specifications
- Part No: 5411273
- Thread Size: ½″ x 13 TPI
- Thread Standard: UNC – Unified National Coarse
- Tap Type: Bottoming
- Chamfer: 1–2 threads
- Flute Style: Straight flute
- Cutting Direction: Right-hand
- Material: High-Speed Steel (HSS)
- Finish: Bright
- Standard: ANSI / Unified Inch
Why Choose the SOMTA 5411273 UNC Bottom Tap?
- Ideal for Blind Hole Tapping – Short chamfer design ensures maximum thread depth.
- Durable HSS Build – Withstands demanding applications and materials.
- Accurate Coarse Threading – Meets ANSI UNC standards for dependable fit.
- Versatile Usage – Perfect for workshops, structural assembly, and general engineering use.
The SOMTA 5411273 bottom tap provides reliable, full-depth threading in blind holes for standard ½″ UNC applications. Its robust design and clean-cutting performance make it a go-to tool for professionals in manufacturing, maintenance, and fabrication.
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