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THREAD SIZE DRILL SIZE % OF THREAD --- THREAD SIZE DRILL SIZE % of THREAD 2-56 51 74% --- M3x0.5 40 70% 2-56 50 62% --- M3x0.5 2.5mm 68% 3-48 5/64 70% --- M3x0.5 39 64% 3-48 47 69% --- M3.5x0.6 33 72% 4-40 44 74% --- M3.5x0.6 2.9mm 68% 4-40 43 65% --- M3.5x0.6 32 63% 5-40 39 71% --- M4x0.7 3.25mm 74% 5-40 38 65% --- M4x0.7 30 73% 6-32 36 71% --- M4x0.7 3.3mm 69% 6-32 35 63% --- M5x0.8 4.2mm 69% 6-32 34 60% --- M5x0.8 19 68% 8-32 29 62% --- M6x1 10 76% 10-24 26 74% --- M6x1 9 70% 10-24 25 69% --- M6x1 5mm 70% 10-24 24 64% --- M6x1 8 65% 10-32 22 73% --- M7x1 A 74% 10-32 21 68% --- M7x1 15/64 73% 10-32 20 64% --- M7x1 6mm 70% 1/4-20 8 73% --- M7x1 8 66% 1/4-20 7 70% --- M8x1 7mm 69% 1/4-20 6 65% --- M8x1 J 66% 1/4-28 3 72% --- M8x1.25 6.7mm 74% 1/4-28 7/32 59% --- M8x1.25 17/64 71% 5/16-18 F 72% --- M8x1.25 6.75mm 71% 5/16-18 G 66% --- M8x1.25 H 70% 5/16-18 H 59% --- M8x1.25 6.8mm 68% 5/16-24 I 67% --- M10x1.25 8.7mm 73% 5/16-24 J 58% --- M10x1.25 11/32 71% 3/8-16 5/16 72% --- M10x1.25 8.75mm 70% 3/8-16 O 68% --- M10x1.5 8.4mm 76% 3/8-16 P 59% --- M10x1.5 Q 75% 3/8-24 Q 71% --- M10x1.5 8.5mm 71% 3/8-24 R 58% --- M12x1.25 27/64 72% 7/16-14 U 70% --- M12x1.25 10.75mm 70% 7/16-14 3/8 62% --- M12x1.75 10.25mm 72% 7/16-20 W 72% --- M12x1.75 Y 71% 7/16-20 25/64 65% --- M12x1.75 13/32 69% 1/2-13 27/64 73% --- M14x1.5 12.5mm 71% 1/2-13 7/16 58% --- M14x2 15/32 76% 1/2-20 29/64 65% --- M14x2 12mm 72% 5/8-11 35/64 62% --- M16x1.5 14.5mm 71% 5/8-18 37/64 58% --- M16x2 35/64 76% 3/4-10 21/32 68% --- M16x2 14mm 72% 3/4-16 11/16 71% --- M18x1.5 16.5mm 70% --- --- --- --- M18x2.5 39/64 74% --- --- --- --- M18x2.5 15.5mm 73%
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