(Part A) Machinerys Handbook 31st Edition Pages 1-1484

Table 6b. British Standard Fundamental Deviations for Holes BS 4500:1969

Grade

Values for delta ( D ) d

Nominal Sizes, mm

≤ 7

>7 Fundamental (Upper) Deviation ES

Grade

P to ZC

Over

V X … –20 … –28 … –34 … –40

ZA ZB ZC 3

4 5 6 0 0 0 1.5 1 3 1.5 2 3 2 3 3 2 3 3 2 3 4 2 3 4 3 4 5 3 4 5 3 5 6 3 5 6 4 5 7 4 5 7 4 6 7 4 6 7 4 6 7 4 6 9 4 6 9 4 6 9 4 7 9 4 7 9 5 7 11 5 7 11 5 7 13 5 7 13

… –18 … –23 … –28 … –33 … –33 … –41

… –26 … –35 … –42 … –50 … –60

0 4 6 7 7 8 8 9 9

0 6 7 9 9

… 3

– 6 –12 –15 –18 –18 –22 –22 –26 –26 –32 –32 –37 –37 –43 –43 –43 –50 –50 –50 –56 –56

–10 –15 –19 –23 –23 –28 –28 –34 –34 –41 –43 –51 –54 –63

–14 –19 –23 –28 –28 –35 –35 –43 –43 –53 –59 –71

–32 –42 –52 –64

–40 –50 –67

–60 0 –80 1 –97 1

3 6

10 14 18 24 30 40 50 65 80

–90 –130 1

–39 –47 –55 –68 –81

–45 –54 –64 –80 –97

–77 –108 –150 1 –98 –136 –188 1.5

12 12 14 14 16 16 19 19 23 23 23 26 26 26 29 29 32 32 34 34

–63 –75 –94

–73

–41 –48 –54 –66

–48 –60 –70 –87

–88 –118 –160 –218 1.5 –112 –148 –200 –274 1.5 –136 –180 –242 –325 1.5 –172 –226 –300 –405 2 –210 –274 –360 –480 2 –258 –335 –445 –585 2 –310 –400 –525 –690 2 –365 –470 –620 –800 3 –415 –535 –700 –900 3 –465 –600 –780 –1000 3 –520 –670 –880 –1150 3 –575 –740 –960 –1250 3 –640 –820 –1050 –1350 3 –710 –920 –1200 –1550 4 –790 –1000 –1300 –1700 4 –900 –1150 –1500 –1800 4

–114 –144 –174 –214 –254 –300 –340 –380 –425 –470 –520 –580 –650 –730

11 11 13 13 15 15 15 17 17 17 20 20 21 21 23 23

–102 –122 –120 –146 –146 –178 –172 –210 –202 –248 –228 –280 –252 –310 –284 –350 –310 –385 –340 –425 –385 –475 –425 –525 –475 –590 –530 –660 –595 –740

Same deviation as for grades above 7 increased by D

–75 –102 –91 –124

100 120 140 160 180 200 225 250 280 315 355 400 450 500

100 120 140 160 180 200 225 250 280 315 355 400 450

–79 –104 –144 –92 –122 –170

–65 –100 –134 –190 –68 –108 –146 –210 –77 –122 –166 –226 –80 –130 –180 –258 –84 –140 –196 –284 –94 –158 –218 –315 –98 –170 –240 –350

–62 –108 –190 –268 –390 –62 –114 –208 –294 –435 –68 –126 –232 –330 –490 –68 –132 –252 –360 –540

–820 –1000 –1300 –1650 –2100 4 –920 –1100 –1450 –1850 –2400 5

–660 –820 –1000 –1250 –1600 –2100 –2600 5

The dimensions are given in 0.001 mm, except the nominal sizes, which are in millimeters.

Made with FlippingBook - Share PDF online