Specifications:Thread Tap: Thread Size: 4-40 UNC; Thread Length: 18mm / 0.71"; Square Shank Size: 2.5mm / 0.1"; Overall Length: 51.5mm / 2.03"; Tolerance Grade: 2B; Material: High Speed SteelRound Die: Thread Size: 4-40 UNC; Outside Diameter (OD): 20mm / 0.79"; Thickness: 5mm / 0.2"; Accuracy class: 6g; Material: Tool Steel (9CrSi)Die Stock: Size: 20mm x 5mm / 0.79" x 0.2" (D*H); Fit Capacity: 11mm-20mm (M3-M4); Overall Length: 175mm / 6.9"; Material: Cast IronDescriptions:The round die is suitable for re-threading existing threads in hard materials like metal, or making new male threads in soft material like plastic. Good for general purpose threading.The high-speed steel tap can make or repair female threads, great for general purpose applications. Machine tap is with high hardness and toughness for wear resistance.
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