Y Y ER/L-TR External Trapeze Shaped X X DIN 103 Laydown Threading l l Inserts for Feed Screws di di External right-hand shown NUT Dimensions 30° Tough 1  Hard THREADING SCREW Designation di Pitch l X Y IC228 IC50M IC250 IC508 IC908 IC1007 16ER/L 1.5 TR 9.52 1.50 16.00 1.0 1.1 • • • 16ER/L 2 TR 9.52 2.00 16.00 1.0 1.3 • • • 16ER/L 3 TR 9.52 3.00 16.00 1.3 1.5 • • • • • • 22ER/L 4 TR 12.70 4.00 22.00 1.8 1.9 • • • 22ER/L 5 TR 12.70 5.00 22.00 2.0 2.4 • • • • 22ER 6 TR 12.70 6.00 22.00 2.0 2.4 • 22UERL 6 TR 12.70 6.00 22.00 2.0 11.0 • • • • 22UERL 7 TR 12.70 7.00 22.00 2.3 11.0 • • 22UERL 8 TR 12.70 8.00 22.00 2.5 11.0 • 27ER/L 6 TR 15.88 6.00 27.00 2.3 2.7 • • 27ER/L 7 TR 15.88 7.00 27.00 2.2 2.6 • 27UERL 8 TR 15.88 8.00 27.00 2.5 13.7 • • • 27UERL 9 TR 15.88 9.00 27.00 3.0 13.7 • • 27UERL 10 TR (1) 15.88 10.00 27.00 3.2 13.7 • • • For Insert Identification System, see page 489 • DIN 103 04/1977,1502901/1977 Class 7e. • For technical information and detailed cutting data, see pages 536-546 (1) One cutting edge only For tools, see pages: C#-SER/L (530) • SER-D (530) • SER/L (529) Y Y IR/L-TR X X l Internal Trapeze Shaped DIN 103 l Laydown Threading Inserts for Feed Screws di di Internal left-hand shown NUT Dimensions 30° Tough 1  Hard SCREW Designation di Pitch l X Y IC228 IC50M IC250 IC508 IC908 08IR 1.5 TR (1) 4.76 1.50 8.00 0.6 0.6 • 08UIRL 2 TR 4.76 2.00 8.00 0.9 4.0 • 16IR 1.5 TR 9.52 1.50 16.00 1.0 1.1 • 16IR/L 2 TR 9.52 2.00 16.00 1.0 1.3 • • • 16IR/L 3 TR 9.52 3.00 16.00 1.3 1.5 • • • • • 22IR/L 4 TR 12.70 4.00 22.00 1.8 1.9 • • • 22IR/L 5 TR 12.70 5.00 22.00 2.0 2.4 • • • 22IR/L 6 TR 12.70 6.00 22.00 2.0 2.4 • • • • 22UIRL 6 TR 12.70 6.00 22.00 2.0 11.0 • • • 22UIRL 7 TR 12.70 7.00 22.00 2.3 11.0 • • 27IR/L 6 TR 15.88 6.00 27.00 2.3 2.7 • • 27IL 7 TR 15.88 7.00 27.00 2.2 2.6 • 27UIRL 8 TR 15.88 8.00 27.00 2.5 13.7 • • • • 27UIRL 9 TR 15.88 9.00 27.00 3.0 13.7 • • 27UIRL 10 TR (2) 15.88 10.00 27.00 3.2 13.7 • • For Insert Identification System, see page 489 • Tolerance: Class 7H • For technical information and detailed cutting data, see pages 536-546 (1) Single threading corner (2) One cutting edge only For tools, see pages: SIR/L (531) 518 ISCAR