Description
HSS Second (Intermediate) Short Hand Tap No.6 UNF
The SOMTA 5510352 – No.6 HSS Second (Intermediate) Short Hand Tap is a precision-manufactured tool for general-purpose hand tapping applications. Built to ISO 529 standards and crafted from high-speed steel (HSS), this tap delivers accurate Unified Fine (UNF) threads with a standard 60° flank angle. Featuring a straight flute design and right-hand cutting direction, it performs reliably in both through-hole and blind-hole tapping scenarios. As the second stage in a traditional 3-piece hand tap set, this intermediate tap supports smooth and progressive thread formation across various workshop and maintenance tasks.
Key Features & Benefits
- UNF Thread Form – Unified Fine Thread for precise and secure fastener engagement.
- Second Tap (Intermediate) – Mid-sequence tap for refining threads after initial cutting with a taper tap.
- High-Speed Steel (HSS) – Provides superior wear resistance, edge retention, and durability.
- Straight Flute Design – Efficient chip clearance ideal for hand tapping.
- 60° Flank Angle – Produces standard-compliant UNF threads with reliable performance.
- ISO 2 / 2B Tolerance – Supports common thread fit applications in general-purpose use.
- Right-Hand Cutting – Compatible with standard tap wrenches and clockwise cutting motion.
- Blind & Through Hole Capability – Suitable for a wide range of tapping tasks.
- Manual Tapping – Optimized for hand use in professional workshop or repair settings.
Technical Specifications
- Part No: 5510352
- Tap Size: No.6 UNF
- Nominal Diameter: 3.51 mm
- Threads Per Inch (TPI): 40
- Overall Length (l1): 50 mm
- Thread Length (l2): 13 mm
- Shank Diameter (d1): 3.55 mm
- Square Size (a): 2.8 mm
- Number of Flutes: 3
- Thread Angle: 60°, UNF Form
- Material: High-Speed Steel (HSS)
- Flute Type: Straight Flute
- Standard: ISO 529
- Tolerance: ISO 2 / 2B
- Cutting Direction: Right-Hand
- Application: General-Purpose Hand Tapping
Why Choose the SOMTA 5510352 Second Tap?
- Precision Threading – Ensures high-quality threads in metalworking, repair, and fabrication environments.
- Efficient Intermediate Tap – Ideal for continuing thread formation between taper and bottom taps.
- Long-Lasting HSS Build – Maintains performance under repeated manual use.
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