uxcell Metric Tap & Drill Bit Set, 2pcs M4 x 0.7 Spiral Point Thread Taps Titanium Coated and 2pcs 3.3mm Twist Drill Bits Roasted Yellow, Screw Tapping Threading Tools

Descriptions:Thread tap adopts spiral point and straight flute design, with clear threads and no burrs. Screw tap provides downward chip removal, fast and precise tapping, suitable for through-hole threads. Machine tap is used in drill presses, tapping, CNC and milling machines. Not recommended for hand use and electric drill tapping.Twist drill bit adopts a spiral flute chip space design to remove chips quickly and cleanly. Cutting edges provide neat and smooth cuts. Use an appropriate lubricant (such as cutting fluid or oil) to reduce friction and heat build-up.M35 cobalt high-speed steel drill bits offer improved hardness, wear resistance, and higher strength. 6542 (M2) high speed steel taps offer excellent heat resistance, high hardness and good toughness for durability and service life. Roasted yellow finish on drill bit effectively removes oxidation on the metal surface, and increases its corrosion resistance. Titanium coated tap has enhanced hardness, corrosion and rust resistance, heat resistance, and reduces friction.Tap and drill bit set is widely for cast iron, aluminum, stainless steel, carbon steel, aluminum alloy, bronze and hard plastics. Use with tapping oil to get higher quality threads and more durable taps. The force must be uniform in tapping operations.Tips:Drill holes with a twist drill bit first, then tap with a thread tap. The tapping angle should be 90 degrees vertical and stable. The higher the hardness, the slower the speed. Fast speed with small torque; slow speed with high torque.The tapping depth should not exceed 1.5 times the diameter of the tap (for example, the diameter M5x0.8 about 5mm, the depth should not exceed 7.5mm.)

• Metric Tap & Drill Bit Set: Tap thread size: M4 x 0.7 (right hand); twist drill bit size: 3.3mm (right hand). 6542 (M2) high speed steel taps offer high hardness and good toughness for durability and service life. M35 cobalt high speed steel drill bits offer improved hardness, wear resistance, and higher strength.
• Wide Applications: Thread tap and drill bit kit can create new threads or re-thread damaged or jammed threads. Spiral Point Tap is suitable for through-hole threads. Used for cast iron, aluminum, stainless steel, carbon steel, aluminum alloy, bronze and hard plastics.
• Features: Thread Tap: Spiral point and straight flute design, clear threads and no burrs, downward chip removal, fast and precise tapping. Machine tap is used in drill presses, tapping machines. Not recommended for hand use and electric drill tapping. Twist Drill Bit: Spiral flute chip space design to remove chips quickly and cleanly. Provide neat and smooth cuts.
• Finish: Roasted yellow finish on drill bit effectively removes oxidation on the metal surface, and increases its corrosion resistance. Titanium coated tap has enhanced hardness, corrosion and rust resistance, heat resistance, and reduces friction. Use with tapping oil to get higher quality threads and more durable taps. Use an appropriate lubricant to reduce friction and heat build-up.
• Tips: Drill holes with a twist drill bit first, then tap with a thread tap. The tapping angle should be 90 degrees vertical and stable. The higher the hardness, the slower the speed. Fast speed with small torque; slow speed with high torque. The tapping depth should not exceed 1.5 times the diameter of the tap.