2Pcs Tap And Die Set 5/16-18 UNC Left Hand Screw Tap & Round Die Thread Tools

1pcs Thread Tap: Thread Size: 5/16-18 UNC (Left Hand); Square Shank Width: 5mm / 0.2"; Thread Length: 22mm / 0.87"; Total Length: 69mm / 2.72"; Accuracy: 2B 1pcs Round Die: Thread Size: 5/16-18 UNC (Left Hand); Outside Diameter: 25mm / 0.98", Thickness: 9mm / 0.35"Descriptions: 6542 high-speed steel taps offer high hardness, good toughness, wear resistance, and excellent cutting performance. 9SiCr alloy tool steel die provides excellent hardness, toughness and wear resistance for durability. Tap and die set can accurately cut, correct or clean threads. Straight flute tap process through holes or shallow blind holes and remove chips downward. Round die is suitable for threads on rods, bolts, screws, pipes and shafts, or just remove bolts and threaded rods. Widely used for most metals, iron, copper, zinc, alloy steel, abrasive steel, stainless steel, etc.. Tap & die with clear threads without burrs, left hand tapping direction. Thread die designed with conical lock hole, strong locking force and no loosening. Uncoated tools feature just the base substrate, great for a wide range of applications. Die is used with die stock wrench (not included). The fastening screw in the middle of the wrench should be inserted into the slot of the die and tightened. Machine tap is used in drill presses, tapping machines, CNC and milling machines. Apply appropriate cutting lubricant or oil for higher quality threads and more durable tap & die. Tips: Control speed according to material hardness. The higher the hardness, the slower the speed. The force must be uniform in tapping operations. Drill the holes with a twist drill bit first, then tap with a thread tap. The tapping angle should be 90 degrees vertical and stable.