Threading Inserts PARTIAL PROFILE 55° INTERNAL B A 55 NUT 55° L 55 SCREW I.C. PITCH RANGE CATALOG NUMBER DIMENSIONS MM TPI RIGHT HAND LEFT HAND Lmm I.C. A B 0.5-1.25 48-20 A55 IR06 A55 IL06 06 4.00 0.5 0.6 0.5-1.5 48-16 A55 IR08 A55 IL08 08 5.00 0.5 0.7 0.5-1.5 48-16 A55 IR11 A55 IL11 11 6.35 0.8 0.9 0.5-1.5 48-16 A55 IR16 A55 IL16 0.8 0.9 1.75-3.0 14-8 G55 IR16 G55 IL16 16 9.525 1.2 1.7 0.5-3.0 48-8 AG55 IR16 AG55 IL16 1.2 1.7 3.5-5.0 7-5 N55 IR22 N55 IL22 22 12.70 1.7 2.5 5.5-6.0 4.5-4 Q55 IR27 Q55 IL27 27 15.875 2.1 3.0 FULL PROFILE THREAD Full profile insert cuts thread profile including all three thread INSERT diameters. Separate insert required for every pitch 5