uxcell Thread Milling Taps, 1/4-20 UNC High Speed Steel (HSS) 3 Straight Flutes Machine Screw Thread Threading Tap, 4" Length (Extra Long)

Key features

• Tap Size: Thread size: 1/4-20 UNC; total length: 100mm / 4" (approx.); accuracy class: H2. Straight flute design, downward chip removal. Right hand thread cutting, clear threads, fast tapping with accuracy.
• High Speed Steel: High speed steel tool has high hardness and toughness, wear resistance, heat resistance. Features just the base substrate without any coatings, good for general purpose thread tapping.
• Applications: Suitable for processing through holes or shallow blind holes . Used for drilling and tapping aluminum, stainless steel, copper, hard plastics, etc.. Use with tapping oil to get higher quality threads and more durable taps.
• Easy to Use: Used on drilling machines, tapping machines, CNC and milling machines. Recommended feed rate: general steel: 6-15m/min; harder steel: 5-10m/min; stainless steel: 2-7m/min; cast iron: 8-10m/min.
• Tips: Machine taps are suggested to be used with tap collets with overload protection. Hand use or electric drills use is not recommended. Please add coolant when tapping and apply anti-rust oil for maintenance after use to prolong the service life.

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