Threading Inserts BSPT INTERNAL B.S. 21: 1985 B A BSPT NUT R 0.137P 27.5° 27.5° L R 0.137P 1°47' 90° BSPT SCREW I.C. PITCH CATALOG NUMBER DIMENSIONS TPI RIGHT HAND LEFT HAND Lmm I.C. A B 28 BSPT 28 IR06 BSPT 28 IL06 06 4.00 0.7 0.5 28 BSPT 28 IR08 BSPT 28 IL08 0.7 0.6 08 5.00 19 BSPT 19 IR08 BSPT 19 IL08 0.7 0.7 28 BSPT 28 IR11 BSPT 28 IL11 0.8 0.9 19 BSPT 19 IR11 BSPT 19 IL11 11 6.35 0.8 0.9 14 BSPT 14 IR11 BSPT 14 IL11 0.9 1.0 28 BSPT 28 IR16 BSPT 28 IL16 0.6 0.6 19 BSPT 19 IR16 BSPT 19 IL16 0.8 0.9 16 9.525 14 BSPT 14 IR16 BSPT 14 IL16 1.0 1.2 11 BSPT 11 IR16 BSPT 11 IL16 1.1 1.5 27