If it encounters difficulty in rotation, the tapping should be suspended. Be sure to select the appropriate cutting oil for the complex tapping process and apply anti-rust oil for maintenance after use., Tap Long: 3., 1/80mm., Die OD: 1., 18/30mm, H: 0., 43/11mm. Model:7/16-24 Tap And Die ,Pitch:24 , Material : HSS Tap : Chip removal, high efficiency, debris rapidly discharged in the tank. No blocking, fast efficiency. Round Die: Not easily broken tooth chip fast, abrasion resistance and long service life. HSS tap offers precision cut threads, accurately formed for consistent, exact threading Advantage Cutting Direction: Right Hand. Straight Flute Thread Taps Material: High-Speed Steel. 7/16-24 UNS Coventry Die Head Chaser Set (1/2 Diehead) S20 grade 7/16"-24 UNS HSS Tap and Die Set, 7/16 X 24 UNS Machine Thread Tap and round Thread Die Right Hand. Straight flute design, used for through-hole and shallow blind hole tapping, not for blind hole tapping Round dies are suitable for general purpose threading, widely used in thread repair or cleaning the external thread. Before tapping confirm whether the diameter of the round hole is appropriate, and to take protective measures when working. Tap Material: High Speed Steel, Die Material: Alloy Tool Steel. HSS Machine Thread Tap Set Sourcing Ap 7/16-20 UNF Round Die, Achine Thread Right Hand Threading Die, Alloy Tool Steel Right Hand Tap And Die Application: Process Steel, Iron, Aluminum, Copper and other metals, widely used in thread repair and other processing.