Somta Somta Series 551 - HSS Short Hand Tap 5/16" UNF Second (Intermediate)

HSS Second (Intermediate) Short Hand Tap 5/16” UNF

The SOMTA 5510792 – 5/16” HSS Second (Intermediate) Short Hand Tap is a professional-grade tool designed for general-purpose hand tapping. Manufactured to ISO 529 standards and constructed from high-speed steel (HSS), this tap delivers precise Unified Fine (UNF) threads with a 60o flank angle. It features a straight flute design and right-hand cutting direction, making it suitable for both blind and through-hole applications. This intermediate tap is intended to be used after a taper tap in a 3-piece set, supporting smooth, accurate thread progression. This listing is for one individual second (intermediate) tap only.

• UNF Thread Form – Unified Fine Thread for consistent, high-precision fastenings.
• Second Tap (Intermediate) – Mid-sequence tap used to refine threads after the initial taper tap.
• High-Speed Steel (HSS) – Offers excellent durability, edge retention, and wear resistance.
• Straight Flute Design – Ensures reliable chip evacuation during manual tapping.
• 60o Flank Angle – Produces standard UNF thread profiles with precision.
• ISO 2 / 2B Tolerance – Suitable for general-purpose internal threading with standard fit.
• Right-Hand Cutting – For clockwise tapping with conventional tools.
• Blind & Through Hole Compatible – Effective in a range of common threading tasks.
• Designed for Manual Use – Optimized for hand tapping in workshop and repair environments.

• Part No: 5510792
• Tap Size: 5/16” UNF
• Threads Per Inch (TPI): 24
• Overall Length (l1): 69 mm
• Thread Length (l2): 19 mm
• Shank Diameter (d1): 8 mm
• Square Size (a): 6.3 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

• Precision UNF Threading – Ensures high-quality results in mechanical and assembly applications.
• Efficient Intermediate Operation – Facilitates clean, progressive thread cutting between taper and bottom taps.
• Robust HSS Design – Suitable for repeated manual use in demanding workshop settings.