Description
HSS Second (Intermediate) Short Hand Tap 1/4" UNF
The SOMTA 5510642 - 1/4" HSS Second (Intermediate) Short Hand Tap is a precision tool designed for general-purpose hand tapping in both workshop and maintenance environments. Compliant with ISO 529 standards and manufactured from high-speed steel (HSS), this tap produces Unified Fine (UNF) threads with a 60° flank angle and ISO 2 / 2B tolerance. The straight flute design supports reliable chip removal, and the right-hand cutting action ensures compatibility with standard tapping procedures. As the second tap in a 3-piece sequence, it is intended for continued thread forming after the taper stage. This listing is for one individual second (intermediate) tap only.
Key Features & Benefits
- UNF Thread Form – Unified Fine Thread standard for accurate, high-precision threading.
- Second Tap (Intermediate) – Used after the taper tap to refine thread depth and shape.
- High-Speed Steel (HSS) – Delivers excellent wear resistance and long-lasting cutting performance.
- Straight Flute Design – Promotes effective chip clearance during hand operations.
- 60° Flank Angle – Ensures consistent and industry-compliant thread profiles.
- ISO 2 / 2B Tolerance – Suitable for general internal thread applications and standard fitment.
- Right-Hand Cutting – Designed for use with clockwise-operated tap wrenches.
- Compatible with Blind & Through Holes – Offers flexibility in varied tapping scenarios.
- Manual Tapping – Engineered specifically for hand use across professional tasks.
Technical Specifications
- Part No: 5510642
- Tap Size: 1/4" UNF
- Threads Per Inch (TPI): 28
- Overall Length (l1): 66 mm
- Thread Length (l2): 19 mm
- Shank Diameter (d1): 6.3 mm
- Square Size (a): 5.0 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 5510642 Second Tap?
- Reliable Intermediate Threading – Designed to ensure smooth thread progression between taper and bottom taps.
- Built from Durable HSS – Delivers longevity and consistent performance over repeated use.
- Versatile Manual Tapping – Works effectively across both blind and through-hole applications.
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