| 
      
        | Steel Ball Dimensional Precision |  
        |  |  |  |  |  |  |  
        | Grade | VDWL Lot Dia Varation | Gauge Interval | Preferred Gauge | Sub gauge Interval | Sub gauge |  
        | 3 | 0.13 | 0.50 | (-5,
,-0.5,0,+0.5
,+5) | 0.10 | -0.2-0.1+0.1+0.2 |  
        | 5 | 0.25 | 1.00 | (-5,
,-1,0,+1
,+5) | 0.20 | -0.4,-0.2,0,+0.2,+0.4 |  
        | 10 | 0.50 | 1.00 | (-9,
,-1,0,+1
,+9) | 0.20 | -0.4,-0.2,0+0.2,+0.4 |  
        | 16 | 0.80 | 2.00 | (-10,
,-2,0,+2
,+10) | 0.40 | -0.8,-0.4,0,+0.4,+0.8 |  
        | 20 | 1.00 | 2.00 | (-10,
,-2,0,+2
,+10) | 0.40 | -0.8,-0.4,0,+0.4,+0.9 |  
        | 28 | 1.40 | 2.00 | (-12,
,-2,0,+2
,+12) | 0.40 | -0.8,-0.4,0,+0.4,+0.10 |  
        | 40 | 2.00 | 4.00 | (-16,
,-4,0,+4
,+16) | 0.80 | -1.6,-0.8,0,+0.8,+1.6 |  
        | 60 | 3.00 | 5.00 | (-20,
,-5,0,+5
,+20) | 1.00 | -2,-1,0,+1,+2 |  
        | 100 | 5.00 | 10.00 | (-40,
,-10,0,+10
,+40) | 2.00 | -4,-2,0,+2,+4 |  
        | 200 | 10.00 | 15.00 | (-60,
,-15,0,+15
,+60) | 3.00 | -6,-3,0,+3,+6 |  
      
        | Steel
        Ball Geometric Precision  |  
        |  |  |  |  |  
        | Grade | VDWL Lot Dia Varation | ?Sph Deviation From Sphericai From | Surface Roughness |  
        | 3 | 0.08 | 0.08 | 0.012 |  
        | 5 | 0.13 | 0.13 | 0.02 |  
        | 10 | 0.25 | 0.25 | 0.025 |  
        | 16 | 0.40 | 0.40 | 0.032 |  
        | 20 | 0.50 | 0.50 | 0.04 |  
        | 28 | 0.70 | 0.70 | 0.05 |  
        | 40 | 1.00 | 1.00 | 0.08 |  
        | 60 | 1.50 | 1.50 | 0.1 |  
        | 100 | 2.50 | 2.50 | 0.125 |  
        | 200 | 5.00 | 5.00 | 0.2 |  
      
        | Diameter |  |  |  
        | inch | mm | kgs per 1000pcs | No. of Ball per kg |  
        |  |  |  |  |  
        | - | 0.5000 | 0.0005 | 1960784.31 |  
        | - | 0.6800 | 0.0013 | 781250.00 |  
        | - | 0.8000 | 0.0021 | 478468.90 |  
        | - | 1.0000 | 0.0041 | 245098.04 |  
        | - | 1.2000 | 0.0071 | 141843.97 |  
        | - | 1.3000 | 0.0089 | 111982.08 |  
        | - | 1.4000 | 0.0124 | 80645.16 |  
        | 1/6 | 1.5875 | 0.0160 | 62500.00 |  
        | - | 1.7500 | 0.0218 | 45871.56 |  
        | - | 2.0000 | 0.0326 | 30674.85 |  
        | 3/32 | 2.3812 | 0.0550 | 18181.82 |  
        | - | 2.5000 | 0.6370 | 1569.86 |  
        | - | 3.0000 | 0.1100 | 9090.91 |  
        | 1/8 | 3.1750 | 0.1300 | 7692.31 |  
        | - | 3.5000 | 0.1700 | 5882.35 |  
        | 5/32 | 3.9688 | 0.2500 | 4000.00 |  
        | - | 4.0000 | 0.2600 | 3846.15 |  
        | 3/16 | 4.7625 | 0.4400 | 2272.73 |  
        | - | 5.0000 | 0.5100 | 1960.78 |  
        | 13/64 | 5.1594 | 0.5600 | 1785.71 |  
        | 7/32 | 5.5562 | 0.6990 | 1430.62 |  
        | 15/64 | 5.9531 | 0.8600 | 1162.79 |  
        | - | 6.0000 | 0.8800 | 1136.36 |  
        | 1/4 | 6.3500 | 1.0400 | 961.54 |  
        | - | 6.5000 | 1.1190 | 893.66 |  
        | 17/64 | 6.7469 | 1.2500 | 800.00 |  
        | 9/32 | 7.1438 | 1.4900 | 671.14 |  
        | 5/16 | 7.9375 | 2.0400 | 490.20 |  
        | - | 8.0000 | 2.0900 | 478.47 |  
        | - | 8.5000 | 2.5000 | 400.00 |  
        | 11/32 | 8.7312 | 2.7100 | 369.00 |  
        | - | 9.0000 | 2.9700 | 336.70 |  
        | 3/8 | 9.5250 | 3.5200 | 284.09 |  
        | - | 10.0000 | 4.0800 | 245.10 |  
        | 13/32 | 10.3188 | 4.4800 | 223.21 |  
        | - | 11.0000 | 5.4200 | 184.50 |  
        | 7/16 | 11.1125 | 5.5600 | 179.86 |  
        | - | 11.5000 | 6.2200 | 160.77 |  
        | 29/64 | 11.5094 | 6.2200 | 160.77 |  
        | 15/32 | 11.9062 | 6.8800 | 145.35 |  
        | - | 12.0000 | 7.0400 | 142.05 |  
        | 31/64 | 12.3031 | 7.6000 | 131.58 |  
        | 1/2 | 12.7000 | 8.3500 | 119.76 |  
        | 17/32 | 13.4938 | 10.0000 | 100.00 |  
        | - | 14.0000 | 11.1800 | 89.45 |  
        | 9/16 | 14.2875 | 11.9000 | 84.03 |  
        | 19/32 | 15.8120 | 14.0000 | 71.43 |  
        | 5/8 | 15.8750 | 16.3000 | 61.35 |  
        | - | 16.0000 | 16.6900 | 59.92 |  
        | 21/32 | 16.6688 | 18.9000 | 52.91 |  
        | - | 17.0000 | 20.2000 | 49.50 |  
        | 11/16 | 17.4625 | 21.7000 | 46.08 |  
        | 23/32 | 18.2562 | 24.8000 | 40.32 |  
        | - | 19.0000 | 27.9600 | 35.77 |  
        | 3/4 | 19.0500 | 28.2000 | 35.46 |  
        | 25/32 | 19.8438 | 31.9000 | 31.35 |  
        | 13/16 | 20.6375 | 35.8000 | 27.93 |  
        | - | 21.0000 | 37.7500 | 26.49 |  
        | 27/32 | 21.4313 | 40.1000 | 24.94 |  
        | 7/8 | 22.2250 | 44.8000 | 22.32 |  
        | - | 23.0000 | 49.5900 | 20.17 |  
        | 29/32 | 23.0188 | 49.8000 | 20.08 |  
        | 15/16 | 23.8125 | 55.1000 | 18.15 |  
        | - | 24.0000 | 56.3400 | 17.75 |  
        | 31/32 | 24.6063 | 60.8000 | 16.45 |  
        | - | 25.0000 | 63.6800 | 15.70 |  
        | 1 | 25.4000 | 66.8000 | 14.97 |  
        | 1 1/32 | 26.1938 | 73.3000 | 13.64 |  
        | 1 1/16 | 26.9875 | 80.2000 | 12.47 |  
        | 1 3/32 | 27.7812 | 87.4000 | 11.44 |  
        | - | 28.0000 | 89.4700 | 11.18 |  
        | 1 1/8 | 28.5750 | 95.2000 | 10.50 |  
        | 1 3/16 | 30.1625 | 112.0000 | 8.93 |  
        | 1 1/4 | 31.7500 | 131.0000 | 7.63 |  
        | - | 32.0000 | 133.6000 | 7.49 |  
        | 1 5/16 | 33.3375 | 151.1000 | 6.62 |  
        | - | 34.0000 | 160.2000 | 6.24 |  
        | 1 3/8 | 34.9250 | 174.0000 | 5.75 |  
        | - | 35.0000 | 174.7500 | 5.72 |  
        | 1 13/32 | 35.7188 | 184.0000 | 5.43 |  
        | 1 7/16 | 36.5125 | 198.0000 | 5.05 |  
        | 1 15/32 | 37.3062 | 216.0000 | 4.63 |  
        | 1 1/2 | 38.1000 | 225.0000 | 4.44 |  
        | 1 9/16 | 39.6875 | 255.0000 | 3.92 |  
        | - | 40.0000 | 260.0000 | 3.85 |  
        | 1 5/8 | 41.2750 | 287.0000 | 3.48 |  
        | - | 42.0000 | 302.0000 | 3.31 |  
        | 1 11/16 | 42.8625 | 321.2000 | 3.11 |  
        | 1 3/4 | 44.4500 | 358.3000 | 2.79 |  
        | - | 45.0000 | 371.4000 | 2.69 |  
        | 1 7/8 | 47.6250 | 440.5000 | 2.27 |  
        | - | 48.0000 | 450.7000 | 2.22 |  
        | 2 | 50.8000 | 534.8000 | 1.87 |  |