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Geometric Dimensioning and Tolerancing for Mechanical Design Part 14
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Tham khảo tài liệu 'geometric dimensioning and tolerancing for mechanical design part 14', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Appendix TABLE A-1 Oversize Diameters in Drilling Drill diameter inch Amount oversize inch Average max. Mean Average min. 1 16 .0020 .0015 .0010 1 8 .0045 .0030 .0010 1 4 .0065 .0040 .0025 1 2 .0080 .0050 .0030 3 4 .0080 .0050 .0030 1 .0090 .0070 .0040 Machinery s Handbook Revised 21st Edition Industrial Press Inc. 247 Copyright 2006 by Gene R. Cogorno. Click here for terms of use. 248 Appendix TABLE A-2 Machine and Cap Screw Sizes Fastener Nominal size Decimal diameter A Clearance hole LMC 8 .1640 .244 .204 10 .1900 .305 .247 A L 1 4 .2500 .425 .337 5 16 .3125 .484 .398 TP 3 8 .3750 .544 .460 7 16 .4375 .603 .520 1 2 .5000 .725 .612 5 8 .6250 .906 .765 3 4 .7500 1.088 .919 X 4 .1120 .176 .144 Socket head Ị 1 6 .1380 .218 .178 cap screws . A H-H- 8 .1640 .262 .213 10 .1900 .303 .246 1 T 1 4 .2500 .365 .307 5 16 .3125 .457 .384 3 8 .3750 .550 .462 L1 r 7 16 .4375 .642 .540 1 1 1 1 1 2 .5000 .735 .617 5 8 6250 .921 .773 3 4 .7500 1.107 .928 Round head Y 4 .1120 .1380 .193 .152 .189 machine z o0Tao A t 8 .1640 .287 .226 10 .1900 .334 .262 A 1 4 .2500 .443 .346 T 5 16 .3125 .557 .434 3 8 .3750 .670 .522 7 16 .4375 .707 .572 1 2 .5000 .766 .633 LJ 5 8 .6250 .944 .784 3 4 .7500 1.185 .967 Clearance Hole 0 @ LMC is calculated with the formula Fastener Fastener head 2. Appendix 249 TABLE A-3 Number Letter and Fractional Drill Sizes Drill no. Fract. Deci. Drill no. Fract. Deci. Drill no. Fract. Deci. Fract. Deci. 60 .0400 29 .1360 B .238 7 16 .438 59 .0410 9 64 .1400 C .242 29 64 .453 58 .0420 28 .1410 D .246 15 32 .469 57 .0430 27 .1440 1 4 .250 31 64 .484 56 .0465 26 .1470 E .250 1 2 .500 3 64 .0469 25 .1500 F .257 33 64 .516 55 .0520 24 .1520 G .261 17 32 .531 54 .0550 23 .1540 17 64 .266 35 64 .547 53 .0595 5 32 .1560 H .266 9 16 .562 1 16 .0625 22 .1570 I .272 37 64 .578 52 .0635 21 .1590 J .277 19 32 .594 51 .0670 20 .1610 9 32 .281 39 64 .609 50 .0700 19 .1660 K .281 5 8 .625 49 .0730 18 .1700 L .290 41 64 .641 48 .0760 11 64 .1720 M .295 21 32 .656 5 64 .0781 17 .