Threading Inserts ISO METRIC INTERNAL ISO 965-1:1999-11 DIN13 : 2005-08 B B A A ISO NUT 1/4P 60° L L 1/8P ISO SCREW I.C. I.C. MULTITOOTH STANDARD STANDARD PITCH CATALOG NUMBER DIMENSIONS RIGHT HAND LEFT HAND L I.C. A B MM mm 3.5 ISO 3.5 IR22 ISO 3.5 IL22 1.6 2.3 4.0 ISO 4.0 IR22 ISO 4.0 IL22 1.6 2.3 4.5 ISO 4.5 IR22 ISO 4.5 IL22 22 12.70 1.7 2.4 5.0 ISO 5.0 IR22 ISO 5.0 IL22 1.7 2.5 5.5 ISO 5.5 IR27 ISO 5.5 IL27 1.8 2.4 27 15.875 6.0 ISO 6.0 IR27 ISO 6.0 IL27 1.9 2.6 MULTITOOTH PITCH DIMENSIONS CATALOG NUMBER TEETH ANVIL RIGHT HAND L MM mm I.C. A B 1.0 3 ISO1.0 3M IR16 1.6 2.6 IS16M 16 9.525 1.5 2 ISO1.5 2M IR16 1.6 2.4 1.5 3 ISO1.5 3M IR22 2.2 3.8 2.0 2 ISO2.0 2M IR22 2.1 2.9 IS22M 22 12.70 2.0 3 ISO2.0 3M IR22 3.0 4.9 3.0 2 ISO3.0 2M IR27 IS27M 27 15.875 2.8 4.4 11