Aurora Bearing Product Catalog 319

www.aurorabearing.com • Fax 630-859-0971 124 ENGINEERING INFORMATION STEEL DESIGNATION CROSS REFERENCE TABLE ALUMINUM DESIGNATION CROSS REFERENCE TABLE Thread size Root Dia. Size or Number Decimal Equiv. Screw Thread Commercial Tap Drills TAP DRILL SIZES FOR INCH THREADS 6-32 10-32 1/4-28 5/16-24 3/8-24 7/16-20 1/2-13 1/2-20 5/8-11 5/8-18 3/4-16 7/8-14 1-12 1-14 1 1/4-12 1 1/2-12 1 3/4-12 2-12 0.0834 0.1469 0.2036 0.2584 0.3209 0.3726 0.4001 0.4351 0.5069 0.5528 0.6688 0.7822 0.8918 0.9072 1.1418 1.3918 1.6050 1.8557 36 22 3 I Q 25/64 27/64 29/64 17/32 37/64 11/16 13/16 59/64 15/16 1 11/64 1 27/64 1 21/32 1 29/32 0.1065 0.1570 0.2130 0.2720 0.3320 0.3906 0.4219 0.4531 0.5312 0.5781 0.6875 0.8125 0.9219 0.9375 1.1719 1.4219 1.6563 1.9063 TAP DRILL SIZE METRIC THREADS THREAD SIZE/TAP METRIC DRILL SIZE M3 X 0.5 M5 X 0.8 M6 X 1.0 M8 X 1.0 M8 X 1.25 M10 X 1.25 M10 X 1.5 M12 X 1.25 M12 X 1.75 M14 X 1.5 M14 X 2.0 M16 X 1.5 M16 X 2.0 M18 X 1.5 M20 X 1.5 M20 X 2.5 M22 X 1.5 M24 X 2.0 M30 X 2.0 2.50 4.20 5.00 7.00 6.80 8.80 8.50 10.80 10.20 12.50 12.00 14.50 14.00 16.50 18.50 17.50 20.50 22.00 28.0 These tables above are to be used as a guides only. Consult the appropriate reference to determine best size based on fit requirements, materials used, etc. USA BRITAIN EU CHINA GERMANY ITALY JAPAN AA B.S. DIN 17007 GB DIN 1700 UNI JIS 2014 H15 3.1255 LD20 AlCuSiMn “P-AlCu4,4SiMnMg” A2014 2024 2L97/98 3.1355 LY12 AlCuMg2 “P-AlCu4,5MgMn” A2024 6061 H20 3.3211 LD30 AlMg1SiCu P-AlMg1SiCu A6061 7075 2L95/96 3.4365 LC9 AlZnMgCu1.5 “P-AlZn5,8MgCu” A7075 USA BRITAIN EU CHINA GERMANY ITALY JAPAN AISI B.S. 970 EN GB DIN UNI JIS 1015 040A15 32C 15 Ck15 C15 S15C 1018 080A15 32B 20Mn C16.8 1C15 S18C 1022 120M19 20Mn5 G22Mn3 S20C 1045 080A47 43B 45 C45 C45 S45C 1144 212M44 Y40Mn 45S20 CF44SMn28 SUM43 1215 230M07 1B Y13 9SMn36 SUM23 4130 708A30 25CrMo4 25CrMo4 25CrMo4 SCM420 4140 708M40 19 42CrMo 41CrMo4 41CrMo4 SCM440 4340 817M40 24 40CrNiMoA 34CrNiMo6 35NiCrMo6 KB SNCM447 52100 534A99 31 GCr15 100Cr6 100Cr6 SUJ2 303 303S21 X8CrNiS18-9 Y1Cr18Ni9 X10CrNiS18-9 X10CrNiS 18 09 SUS303 410 410S21 56A 1Cr13 X15Cr13 SUS410 440C A-1b 9Cr18 X105CrMo17 SUS440C 17-4 X5CrNiCuNb1714 SUS80 These tables are to be used as a guides to assist in finding comparable metal designations only. True interchange can be determined only by comparing chemical composition, mechanical properties, and manufacturing technologies.

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