Somta Series 551 - HSS Short Hand Tap No.10 UNF Second (Intermediate)

HSS Second (Intermediate) Short Hand Tap No.10 UNF

The SOMTA 5510482 – No.10 HSS Second (Intermediate) Short Hand Tap is a precision-engineered tool built for general-purpose hand tapping. Crafted from high-speed steel (HSS) and manufactured to ISO 529 standards, this tap produces Unified Fine (UNF) threads with a 60° flank angle and ISO 2 / 2B tolerance. Its straight flute design ensures effective chip removal, while the right-hand cutting action enables smooth operation in both through-hole and blind-hole applications. Designed as the second tap in a 3-piece set, it is used to further develop threads after the taper tap stage. This listing is for one individual second (intermediate) tap only.

Key Features & Benefits

• UNF Thread Form – Unified Fine Thread for high-precision mechanical applications.
• Second Tap (Intermediate) – Mid-stage tap used after the taper tap for refined thread shaping.
• High-Speed Steel (HSS) – Offers outstanding wear resistance and tool longevity.
• Straight Flute Design – Ensures clean chip evacuation during manual tapping.
• 60° Flank Angle – Delivers standard-compliant thread geometry.
• ISO 2 / 2B Tolerance – Suitable for general-purpose internal thread fits.
• Right-Hand Cutting – Designed for use with standard clockwise tapping tools.
• Through & Blind Hole Tapping – Versatile solution for a range of tapping scenarios.
• Manual Use – Optimized for controlled hand tapping in workshops and repair environments.

Technical Specifications

• Part No: 5510482
• Tap Size: No.10 UNF
• Nominal Diameter: 4.83 mm
• Threads Per Inch (TPI): 32
• Overall Length (l1): 58 mm
• Thread Length (l2): 16 mm
• Shank Diameter (d1): 5.0 mm
• Square Size (a): 4.0 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 5510482 Second Tap?

• Clean, Controlled Thread Formation – Ideal for progressing thread cuts after the taper stage.
• Durable HSS Construction – Built to perform in demanding hand-tapping operations.
• Versatile Use – Performs well in both blind and through-hole tapping tasks.