Threading Inserts ACME INTERNAL ANSI/ASME 1.5-1988 B A ACME NUT 29° I.C. L ACME SCREW PITCH CATALOG NUMBER DIMENSIONS TPI RIGHT HAND LEFT HAND L mm I.C. A B 16 ACME 16 IR11 ACME 16 IL11 11 6.35 1.0 1.1 16 ACME 16 IR16 ACME 16 IL16 1.0 1.1 14 ACME 14 IR16 ACME 14 IL16 1.0 1.2 12 ACME 12 IR16 ACME 12 IL16 1.1 1.2 10 ACME 10 IR16 ACME 10 IL16 16 9.525 1.3 1.4 8 ACME 8 IR16 ACME 8 IL16 1.4 1.5 6 ACME 6 IR16 ACME 6 IL16 1.4 1.5 6 ACME 6 IR22 ACME 6 IL22 1.8 2.1 5 ACME 5 IR22 ACME 5 IL22 22 12.70 2.0 2.3 4 ACME 4 IR22 ACME 4 IL22 2.1 2.4 4 ACME 4 IR27 ACME 4 IL27 27 15.875 2.4 2.6 35