RUKO HGB-III DIN 352 HSS-E Machine Tap Set M3 x 0.50 mm Left-Hand 3-Piece

This hand tap set cuts left-hand metric threads with a 60° flank angle, providing a complete solution for threading blind and through holes in tough materials. The set includes taper, plug, and bottoming taps, allowing you to start threads easily and finish them to the bottom of blind holes.

Advantages

Manufactured from HSS-E high-speed steel with cobalt, these taps offer high wear resistance and heat hardness for demanding applications. The bright finish reduces friction and improves chip evacuation. The set conforms to DIN 352, ensuring dimensional accuracy and compatibility with standard tool holders.

Suitable for

• Cutting left-hand metric threads in steel, stainless steel, and non-ferrous metals
• Threading blind holes where bottoming taps are required
• Repairing or creating left-hand threads in maintenance and manufacturing

Key specifications

• Thread size: M3 x 0.50 mm
• Thread direction: Left-hand (LH)
• Standard: DIN 352
• Material: HSS-E (High-Speed Steel with Cobalt)
• Number of pieces: 3 (taper, plug, bottoming)
• Overall length: 45 mm
• Thread length: 11 mm
• Shank diameter: 3.5 mm
• Square drive size: 2.7 mm
• Surface treatment: Bright (uncoated)

Recommendations

Use with a suitable tap wrench and cutting fluid for best results. For left-hand threads, ensure the machine spindle rotates counterclockwise.