RUKO HGB-Set-DIN352-HSS-60°-5/16x Hand Tap Set, UNC 5/16-18, 3 Pieces, HSS, DIN 352

Cutting internal threads by hand in through or blind holes can be slow and error-prone without a matched set of taps. This RUKO HGB set solves that with three taps in taper, second, and bottoming styles, so you can start threads easily and finish them to full depth.

Who is it for

Machinists, metalworkers, and maintenance technicians who need reliable UNC threads in steel, cast iron, or non-ferrous metals.

Main features

• Set of 3 hand taps: taper, second, and bottoming for progressive thread cutting
• Thread standard: UNC 5/16 inch, 18 threads per inch, 60° thread angle
• Made from high-speed steel (HSS) for durability and heat resistance
• Complies with DIN 352 for hand tap dimensions and tolerances
• Straight flutes and square drive shank for use with standard tap wrenches
• Bright uncoated finish for general-purpose threading

Specifications

• Tool type: Hand tap set
• Material: High-speed steel (HSS)
• Standard: DIN 352
• Thread standard: UNC (Unified National Coarse)
• Nominal thread diameter: 5/16 inch
• Threads per inch (TPI): 18
• Thread angle: 60°
• Number of taps in set: 3 (taper, second, bottoming)
• Cutting direction: Right-hand
• Flute type: Straight flute
• Surface finish: Bright (uncoated)
• Shank type: Square drive
• Shank size (square): Approx. 6.3 mm
• Recommended material group: Steels up to 800 N/mm², cast iron, non-ferrous metals
• Application: Through holes and blind holes

Tips

Always use a suitable cutting fluid when tapping steel to extend tap life and improve thread finish. For blind holes, start with the taper tap, then the second, and finish with the bottoming tap to cut threads close to the bottom.