KWB 443304 set maschi a mano M4 x 0,7 mm DIN 352 HSS, 3 pezzi

Cutting clean internal threads by hand in metal or plastic can be frustrating without the right set of taps. This KWB 3-piece hand tap set solves that problem by providing the three essential taps—taper, plug, and bottoming—for producing accurate M4 x 0.7 mm metric threads in through holes and blind holes.

Who is it for

This set is for machinists, metalworkers, maintenance technicians, and serious DIYers who need to create or repair M4 threads in steel, cast iron, non-ferrous metals, or plastics. It suits both workshop use and on-site repairs where a full threading kit is impractical.

Main features

• Three-piece set: taper tap (No. 1), plug tap (No. 2), and bottoming tap (No. 3) for progressive thread cutting.
• Metric M4 thread with 0.7 mm pitch, conforming to DIN 352.
• Made from high-speed steel (HSS) for durability and long tool life.
• Bright finish and square shank for secure holding in a tap wrench.
• Right-hand cutting direction for standard clockwise threading.

Specifications

• Thread size: M4
• Thread pitch: 0.7 mm
• Material: High-speed steel (HSS)
• Standard: DIN 352
• Number of pieces: 3
• Cutting direction: Right-hand
• Shank type: Square
• Surface finish: Bright
• Tolerance class: ISO 2 (6H)
• Suitable materials: Steel, cast iron, non-ferrous metals, plastics

Tips

Use cutting oil when tapping metals to reduce friction and improve thread finish. Start with the taper tap, then progress to the plug and bottoming taps as needed. For blind holes, clear chips frequently to avoid tap breakage.