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Dormer's Shark-Line range of material specific taps offer increased performance and accuracy over standard HSS taps. Manufactured from powder metallurgy cobalt steel (HSS-E-PM), each tap features a colored ring denoting recommendation for use on specific materials:
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White Ring Taps for Cast Iron
- Straight flute design for threading of through and blind holes in short chipping materials
- Thread forms available: UNC, UNF, M, MF
- Semi-bottoming & full-bottoming chamfers available (C=2-3 threads) (E=1.5-2 threads)
- TiAlN top coating for excellent performance and tool life
- Codes: E814, E914, E815, E915 (UNC-UNF)
- Codes: E630, E770, E631, E771 (M-MF)
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Blue Ring Taps for Stainless Steel
- Spiral point and spiral flute (40°) options
- Spiral flutes feature back taper for chip evacuation, reducing chipping and torque when tap reverses
- Thread forms available: UNC, UNF, M & MF
- Available in 2B or 3B Class of Fit
- Super B (TiAlN + WC/C) coating with edge treatment
- Codes: E813, E913, E629, E769 (spiral point)
- Codes: E812, E912, E629, E768 (spiral flute)
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Red Ring Taps for Alloy Steel
- Spiral point and spiral flute (45°) options
- Spiral flutes feature special flute geometry to prevent nest formation of chips, reducing risk of re-cutting chips on reversal
- Thread forms available: UNC, UNF, M MF
- TiAlN-Top coating with edge treatment
- Codes: E811, E911, E627, E767 (spiral point)
- Codes: E810, E910, E626, E766 (spiral flute)
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Yellow Ring Taps for Low Alloy Steel
- Spiral point and spiral flute (40°) options
- TiAIN-Top coating with edge treatment
- Thread forms available: UNC, UNF, M, MF
- Spiral flute features special flute geometry which prevents nest formation of chips, reducing risk of re-cutting chips on reversal
- Codes: E809, E909, E625, E765 (spiral point)
- Codes: E808, E908, E624, E764 (spiral flute)
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