Somta Somta Series 551 - HSS Short Hand Tap 9/16" UNF Second (Intermediate)

HSS Second (Intermediate) Short Hand Tap 9/16” UNF

The SOMTA 5511432 – 9/16” HSS Second (Intermediate) Short Hand Tap is a robust and precision-engineered tool designed for general-purpose hand tapping. Manufactured to ISO 529 standards and crafted from high-speed steel (HSS), this tap delivers accurate Unified Fine (UNF) threads with a 60o flank angle and ISO 2 / 2B tolerance. It features a straight flute design and right-hand cutting direction, making it suitable for both blind-hole and through-hole tapping. As the second tap in a 3-piece set, it’s used for advancing thread formation after taper tapping. This listing is for one individual second (intermediate) tap only.

• UNF Thread Form – Unified Fine Thread standard ensures accurate, fine-pitch threading.
• Second Tap (Intermediate) – Mid-stage tap used to continue cutting threads after the taper tap.
• High-Speed Steel (HSS) – Offers excellent strength, wear resistance, and cutting durability.
• Straight Flute Design – Provides efficient chip evacuation during hand tapping.
• 60o Flank Angle – Conforms to standard UNF thread profiles for secure fastener fit.
• ISO 2 / 2B Tolerance – Suitable for general internal thread applications and standard fitment.
• Right-Hand Cutting – Operates with standard clockwise tap wrenches.
• Blind & Through Hole Tapping – Versatile tap suitable for varied workshop and repair scenarios.
• Designed for Manual Use – Optimized for precise hand tapping applications.

• Part No: 5511432
• Tap Size: 9/16” UNF
• Threads Per Inch (TPI): 18
• Overall Length (l1): 90 mm
• Thread Length (l2): 25 mm
• Shank Diameter (d1): 11.2 mm
• Square Size (a): 9.0 mm
• Number of Flutes: 4
• Thread Angle: 60o, 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

• Accurate Thread Advancement – Ideal for refining threads between taper and bottoming stages.
• Durable High-Speed Steel – Built for longevity in workshop and maintenance applications.
• Versatile Manual Tapping – Reliable in both through-hole and blind-hole threading operations.