British standard O Rings.

All of these sizes are available in a wide variety of materials.

Standard Materials
 
Our standard materials are available on an Ex/Stock basis from our Central England base.
 
NBR70 (Nitrile)
SealXpress Ref : N70
FPM75 (Viton)
SealXpress Ref : V75
EP70 (Nordel)
SealXpress Ref : EP70
SIL70 (Silicone)
SealXpress Ref : S70
 
 
Other Materials
 
These materials are available upon request, please ask for information.
 
CR (Neoprene)
FVMQ (Fluorosilicone)
HNBR (Hydrogenated Nitrile)
NR (Natural Rubber)
TFE/P (AFLAS)
PTFE (Virgin)
FEP encapsulated
AU/EU (Polyurethane)
PFA encapsulated
FFKM (Kalrez)



  Nominal Size (in.) Actual Size (in.) Actual Size (mm.)
BS No. I.D. O.D. W. I.D. W. I.D. W.
BS001 1/32 3/32 1/32 .029±.004 .040±.003 0.74±0.10 1.02±0.08
BS002 3/64 9/64 3/64 .042±.004 .050±.003 1.07±0.10 1.27±0.08
BS003 1/16 3/16 1/16 .056±.004 .060±.003 1.42±0.10 1.52±0.08
BS004 5/64 13/64 1/16 .070±.005 .070±.003 1.78±0.13 1.78±0.08
BS005 3/32 7/32 1/16 .101±.005 .070±.003 2.57±0.13 1.78±0.08
BS006 1/8 1/4 1/16 .114±.005 .070±.003 2.90±0.13 1.78±0.08
BS007 5/32 9/32 1/16 .145±.005 .070±.003 3.68±0.13 1.78±0.08
BS008 3/16 5/16 1/16 .176±.005 .070±.003 4.47±0.13 1.78±0.08
BS009 7/32 11/32 1/16 .208±.005 .070±.003 5.28±0.13 1.78±0.08
BS010 1/4 3/8 1/16 .239±.005 .070±.003 6.07±0.13 1.78±0.08
BS011 5/16 7/16 1/16 .301±.005 .070±.003 7.65±0.13 1.78±0.08
BS012 3/8 1/2 1/16 .364±.005 .070±.003 9.25±0.13 1.78±0.08
BS013 7/16 9/16 1/16 .426±.005 .070±.003 10.82±0.13 1.78±0.08
BS014 1/2 5/8 1/16 .489±.005 .070±.003 12.42±0.13 1.78±0.08
BS015 9/16 11/16 1/16 .551±.007 .070±.003 14.00±0.18 1.78±0.08
BS016 5/8 3/4 1/16 .614±.009 .070±.003 15.60±0.23 1.78±0.08
BS017 11/16 13/16 1/16 .676±.009 .070±.003 17.17±0.23 1.78±0.08
BS018 3/4 7/8 1/16 .739±.009 .070±.003 18.77±0.23 1.78±0.08
BS019 13/16 15/16 1/16 .801±.009 .070±.003 20.35±0.23 1.78±0.08
BS020 7/8 1 1/16 .864±.009 .070±.003 21.95±0.23 1.78±0.08
BS021 15/16 1-1/16 1/16 .926±.009 .070±.003 23.52±0.23 1.78±0.08
BS022 1 1-1/8 1/16 .989±.010 .070±.003 25.12±0.25 1.78±0.08
BS023 1-1/16 1-3/16 1/16 1.051±.010 .070±.003 26.70±0.25 1.78±0.08
BS024 1-1/8 1-1/4 1/16 1.114±.010 .070±.003 28.30±0.25 1.78±0.08
BS025 1-3/16 1-5/16 1/16 1.176±.011 .070±.003 29.87±0.28 1.78±0.08
BS026 1-1/4 1-3/8 1/16 1.239±.011 .070±.003 31.47±0.28 1.78±0.08
BS027 1-5/16 1-7/16 1/16 1.301±.011 .070±.003 33.05±0.28 1.78±0.08
BS028 1-3/8 1-1/2 1/16 1.364±.013 .070±.003 34.65±0.33 1.78±0.08
BS029 1-1/2 1-5/8 1/16 1.489±.013 .070±.003 37.82±0.33 1.78±0.08
BS030 1-5/8 1-3/4 1/16 1.614±.013 .070±.003 41.00±0.33 1.78±0.08
BS031 1-3/4 1-7/8 1/16 1.739±.015 .070±.003 44.17±0.38 1.78±0.08
BS032 1-7/8 2 1/16 1.864±.015 .070±.003 47.35±0.38 1.78±0.08
BS033 2 2-1/8 1/16 1.989±.018 .070±.003 50.52±0.46 1.78±0.08
BS034 2-1/8 2-1/4 1/16 2.114±.018 .070±.003 53.70±0.46 1.78±0.08
BS035 2-1/4 2-3/8 1/16 2.239±.018 .070±.003 56.87±0.46 1.78±0.08
BS036 2-3/8 2-1/2 1/16 2.364±.018 .070±.003 60.05±0.46 1.78±0.08
BS037 2-1/2 2-5/8 1/16 2.489±.018 .070±.003 63.22±0.46 1.78±0.08
BS038 2-5/8 2-3/4 1/16 2.614±.020 .070±.003 66.40±0.51 1.78±0.08
BS039 2-3/4 2-7/8 1/16 2.739±.020 .070±.003 69.57±0.51 1.78±0.08
BS040 2-7/8 3 1/16 2.864±.020 .070±.003 72.75±0.51 1.78±0.08
BS041 3 3-1/8 1/16 2.989±.024 .070±.003 75.92±0.61 1.78±0.08
BS042 3-1/4 3-3/8 1/16 3.239±.024 .070±.003 82.27±0.61 1.78±0.08
BS043 3-1/2 3-5/8 1/16 3.489±.024 .070±.003 88.62±0.61 1.78±0.08
BS044 3-3/4 3-7/8 1/16 3.739±.027 .070±.003 94.97±0.69 1.78±0.08
BS045 4 4-1/8 1/16 3.989±.027 .070±.003 101.32±0.69 1.78±0.08
BS046 4-1/4 4-3/8 1/16 4.239±.030 .070±.003 107.67±0.76 1.78±0.08
BS047 4-1/2 4-5/8 1/16 4.489±.030 .070±.003 114.02±0.76 1.78±0.08
BS048 4-3/4 4-7/8 1/16 4.739±.030 .070±.003 120.37±0.76 1.78±0.08
BS049 5 5-1/8 1/16 4.989±.037 .070±.003 126.72±0.94 1.78±0.08
BS050 5-1/4 5-3/8 1/16 5.239±.037 .070±.003 133.07±0.94 1.78±0.08
BS102 1/16 1/4 3/32 .049±.005 .103±.003 1.24±0.13 2.62±0.08
BS103 3/32 9/32 3/32 .081±.005 .103±.003 2.06±0.13 2.62±0.08
BS104 1/8 5/16 3/32 .112±.005 .103±.003 2.84±0.13 2.62±0.08
BS105 5/32 11/32 3/32 .143±.005 .103±.003 3.63±0.13 2.62±0.08
BS106 3/16 3/8 3/32 .174±.005 .103±.003 4.42±0.13 2.62±0.08
BS107 7/32 13/32 3/32 .206±.005 .103±.003 5.23±0.13 2.62±0.08
BS108 1/4 7/16 3/32 .237±.005 .103±.003 6.02±0.13 2.62±0.08
BS109 5/16 1/2 3/32 .299±.005 .103±.003 7.59±0.13 2.62±0.08
BS110 3/8 9/16 3/32 .362±.005 .103±.003 9.19±0.13 2.62±0.08
BS111 7/16 5/8 3/32 .424±.005 .103±.003 10.77±0.13 2.62±0.08
BS112 1/2 11/16 3/32 .487±.005 .103±.003 12.37±0.13 2.62±0.08
BS113 9/16 3/4 3/32 .549±.007 .103±.003 13.94±0.18 2.62±0.08
BS114 5/8 13/16 3/32 .612±.009 .103±.003 15.54±0.23 2.62±0.08
BS115 11/16 7/8 3/32 .674±.009 .103±.003 17.12±0.23 2.62±0.08
BS116 3/4 15/16 3/32 .737±.009 .103±.003 18.72±0.23 2.62±0.08
BS117 13/16 1 3/32 .799±.010 .103±.003 20.30±0.25 2.62±0.08
BS118 7/8 1-1/16 3/32 .862±.010 .103±.003 21.89±0.25 2.62±0.08
BS119 15/16 1-1/8 3/32 .924±.010 .103±.003 23.47±0.25 2.62±0.08
BS120 1 1-3/16 3/32 .987±.010 .103±.003 25.07±0.25 2.62±0.08
BS121 1-1/16 1-1/4 3/32 1.049±.010 .103±.003 26.64±0.25 2.62±0.08
BS122 1-1/8 1-5/16 3/32 1.112±.010 .103±.003 28.24±0.25 2.62±0.08
BS123 1-3/16 1-3/8 3/32 1.174±.012 .103±.003 29.82±0.30 2.62±0.08
BS124 1-1/4 1-7/16 3/32 1.237±.012 .103±.003 31.42±0.30 2.62±0.08
BS125 1-5/16 1-1/2 3/32 1.299±.012 .103±.003 32.99±0.30 2.62±0.08
BS126 1-3/8 1-9/16 3/32 1.362±.012 .103±.003 34.59±0.30 2.62±0.08
BS127 1-7/16 1-5/8 3/32 1.424±.012 .103±.003 36.17±0.30 2.62±0.08
BS128 1-1/2 1-11/16  3/32 1.487±.012 .103±.003 37.77±0.30 2.62±0.08
BS129 1-9/16 1-3/4 3/32 1.549±.015 .103±.003 39.34±0.38 2.62±0.08
BS130 1-5/8 1-13/16 3/32 1.612±.015 .103±.003 40.94±0.38 2.62±0.08
BS131 1-11/16  1-7/8 3/32 1.674±.015 .103±.003 42.52±0.38 2.62±0.08
BS132 1-3/4 1-15/16 3/32 1.737±.015 .103±.003 44.12±0.38 2.62±0.08
BS133 1-13/16 2 3/32 1.799±.015 .103±.003 45.69±0.38 2.62±0.08
BS134 1-7/8 2-1/16 3/32 1.862±.015 .103±.003 47.30±0.38 2.62±0.08
BS135 1-15/16 2-1/8 3/32 1.925±.017 .103±.003 48.90±0.43 2.62±0.08
BS136 2 2-3/16 3/32 1.987±.017 .103±.003 50.47±0.43 2.62±0.08
BS137 2-1/16 2-1/4 3/32 2.050±.017 .103±.003 52.07±0.43 2.62±0.08
BS138 2-1/8 2-5/16 3/32 2.112±.017 .103±.003 53.64±0.43 2.62±0.08
BS139 2-3/16 2-3/8 3/32 2.175±.017 .103±.003 55.25±0.43 2.62±0.08
BS140 2-1/4 2-7/16 3/32 2.237±.017 .103±.003 56.82±0.43 2.62±0.08
BS141 2-5/16 2-1/2 3/32 2.300±.020 .103±.003 58.42±0.51 2.62±0.08
BS142 2-3/8 2-9/16 3/32 2.362±.020 .103±.003 59.99±0.51 2.62±0.08
BS143 2-7/16 2-5/8 3/32 2.425±.020 .103±.003 61.60±0.51 2.62±0.08
BS144 2-1/2 2-11/16 3/32 2.487±.020 .103±.003 63.17±0.51 2.62±0.08
BS145 2-9/16 2-3/4 3/32 2.550±.020 .103±.003 64.77±0.51 2.62±0.08
BS146 2-5/8 2-13/16 3/32 2.612±.020 .103±.003 66.34±0.51 2.62±0.08
BS147 2-11/16 2-7/8 3/32 2.675±.022 .103±.003 67.95±0.56 2.62±0.08
BS148 2-3/4 2-15/16 3/32 2.737±.022 .103±.003 69.52±0.56 2.62±0.08
BS149 2-13/16 3 3/32 2.800±.022 .103±.003 71.12±0.56 2.62±0.08
BS150 2-7/8 3-1/16 3/32 2.862±.022 .103±.003 72.69±0.56 2.62±0.08
BS151 3 3-3/16 3/32 2.987±.024 .103±.003 75.87±0.61 2.62±0.08
BS152 3-1/4 3-7/16 3/32 3.237±.024 .103±.003 82.22±0.61 2.62±0.08
BS153 3-1/2 3-11/16 3/32 3.487±.024 .103±.003 88.57±0.61 2.62±0.08
BS154 3-3/4 3-15/16 3/32 3.737±.028 .103±.003 94.92±0.71 2.62±0.08
BS155 4 4-3/16 3/32 3.987±.028 .103±.003 101.27±0.71 2.62±0.08
BS156 4-1/4 4-7/16 3/32 4.237±.030 .103±.003 107.62±0.76 2.62±0.08
BS157 4-1/2 4-11/16 3/32 4.487±.030 .103±.003 113.97±0.76 2.62±0.08
BS158 4-3/4 4-15/16 3/32 4.737±.030 .103±.003 120.32±0.76 2.62±0.08
BS159 5 5-3/16 3/32 4.987±.035 .103±.003 126.67±0.89 2.62±0.08
BS160 5-1/4 5-7/16 3/32 5.237±.035 .103±.003 133.02±0.89 2.62±0.08
BS161 5-1/2 5-11/16 3/32 5.487±.035 .103±.003 139.37±0.89 2.62±0.08
BS162 5-3/4 5-15/16 3/32 5.737±.035 .103±.003 145.72±0.89 2.62±0.08
BS163 6 6-3/16 3/32 5.987±.035 .103±.003 152.07±0.89 2.62±0.08
BS164 6-1/4 6-7/16 3/32 6.237±.040 .103±.003 158.42±1.02 2.62±0.08
BS165 6-1/2 6-11/16 3/32 6.487±.040 .103±.003 164.77±1.02 2.62±0.08
BS166 6-3/4 6-15/16 3/32 6.737±.040 .103±.003 171.12±1.02 2.62±0.08
BS167 7 7-3/16 3/32 6.987±.040 .103±.003 177.47±1.02 2.62±0.08
BS168 7-1/4 7-7/16 3/32 7.237±.045 .103±.003 183.82±1.14 2.62±0.08
BS169 7-1/2 7-11/16 3/32 7.487±.045 .103±.003 190.17±1.14 2.62±0.08
BS170 7-3/4 7-15/16 3/32 7.737±.045 .103±.003 196.52±1.14 2.62±0.08
BS171 8 8-3/16 3/32 7.987±.045 .103±.003 202.87±1.14 2.62±0.08
BS172 8-1/4 8-7/16 3/32 8.237±.050 .103±.003 209.22±1.27 2.62±0.08
BS173 8-1/2 8-11/16 3/32 8.487±.050 .103±.003 215.57±1.27 2.62±0.08
BS174 8-3/4 8-15/16 3/32 8.737±.050 .103±.003 221.92±1.27 2.62±0.08
BS175 9 9-3/16 3/32 8.987±.050 .103±.003 228.27±1.27 2.62±0.08
BS176 9-1/4 9-7/16 3/32 9.237±.055 .103±.003 234.62±1.40 2.62±0.08
BS177 9-1/2 9-11/16 3/32 9.487±.055 .103±.003 240.97±1.40 2.62±0.08
BS178 9-3/4 9-15/16 3/32 9.737±.055 .103±.003 247.32±1.40 2.62±0.08
BS201 3/16 7/16 1/8 .171±.005 .139±.004 4.34±0.13 3.53±0.10
BS202 1/4 1/2 1/8 .234±.005 .139±.004 5.94±0.13 3.53±0.10
BS203 5/16 9/16 1/8 .296±.005 .139±.004 7.52±0.13 3.53±0.10
BS204 3/8 5/8 1/8 .359±.005 .139±.004 9.12±0.13 3.53±0.10
BS205 7/16 11/16 1/8 .421±.005 .139±.004 10.69±0.13 3.53±0.10
BS206 1/2 3/4 1/8 .484±.005 .139±.004 12.29±0.13 3.53±0.10
BS207 9/16 13/16 1/8 .546±.007 .139±.004 13.87±0.17 3.53±0.10
BS208 5/8 7/8 1/8 .609±.009 .139±.004 15.47±0.23 3.53±0.10
BS209 11/16 15/16 1/8 .671±.009 .139±.004 17.04±0.23 3.53±0.10
BS210 3/4 1 1/8 .734±.010 .139±.004 18.64±0.25 3.53±0.10
BS211 13/16 1-1/16 1/8 .796±.010 .139±.004 20.22±0.25 3.53±0.10
BS212 7/8 1-1/8 1/8 .859±.010 .139±.004 21.82±0.25 3.53±0.10
BS213 15/16 1-3/16 1/8 .921±.010 .139±.004 23.39±0.25 3.53±0.10
BS214 1 1-1/4 1/8 .984±.010 .139±.004 25.00±0.25 3.53±0.10
BS215 1-1/16 1-5/16 1/8 1.046±.010 .139±.004 26.57±0.25 3.53±0.10
BS216 1-1/8 1-3/8 1/8 1.109±.012 .139±.004 28.17±0.30 3.53±0.10
BS217 1-3/16 1-7/16 1/8 1.171±.012 .139±.004 29.74±0.30 3.53±0.10
BS218 1-1/4 1-1/2 1/8 1.234±.012 .139±.004 31.34±0.30 3.53±0.10
BS219 1-5/16 1-9/16 1/8 1.296±.012 .139±.004 32.92±0.30 3.53±0.10
BS220 1-3/8 1-5/8 1/8 1.359±.012 .139±.004 34.52±0.30 3.53±0.10
BS221 1-7/16 1-11/16 1/8 1.421±.012 .139±.004 36.09±0.30 3.53±0.10
BS222 1-1/2 1-3/4 1/8 1.484±.015 .139±.004 37.69±0.38 3.53±0.10
BS223 1-5/8 1-7/8 1/8 1.609±.015 .139±.004 40.87±0.38 3.53±0.10
BS224 1-3/4 2 1/8 1.734±.015 .139±.004 44.04±0.38 3.53±0.10
BS225 1-7/8 2-1/8 1/8 1.859±.018 .139±.004 47.22±0.46 3.53±0.10
BS226 2 2-1/4 1/8 1.984±.018 .139±.004 50.39±0.46 3.53±0.10
BS227 2-1/16 2-3/8 1/8 2.109±.018 .139±.004 53.57±0.46 3.53±0.10
BS228 2-1/4 2-1/2 1/8 2.234±.020 .139±.004 56.74±0.50 3.53±0.10
BS229 2-3/8 2-5/8 1/8 2.359±.020 .139±.004 59.92±0.50 3.53±0.10
BS230 2-1/2 2-3/4 1/8 2.484±.020 .139±.004 63.09±0.50 3.53±0.10
BS231 2-5/8 2-7/8 1/8 2.609±.020 .139±.004 66.27±0.50 3.53±0.10
BS232 2-3/4 3 1/8 2.734±.024 .139±.004 69.44±0.61 3.53±0.10
BS233 2-7/8 3-1/8 1/8 2.859±.024 .139±.004 72.62±0.61 3.53±0.10
BS234 3 3-1/4 1/8 2.984±.024 .139±.004 75.79±0.61 3.53±0.10
BS235 3-1/8 3-3/8 1/8 3.109±.024 .139±.004 78.97±0.61 3.53±0.10
BS236 3-1/4 3-1/2 1/8 3.234±.024 .139±.004 82.14±0.61 3.53±0.10
BS237 3-3/8 3-5/8 1/8 3.359±.024 .139±.004 85.32±0.61 3.53±0.10
BS238 3-1/2 3-3/4 1/8 3.484±.024 .139±.004 88.49±0.61 3.53±0.10
BS239 3-5/8 3-7/8 1/8 3.609±.028 .139±.004 91.67±0.71 3.53±0.10
BS240 3-3/4 4 1/8 3.734±.028 .139±.004 94.84±0.71 3.53±0.10
BS241 3-7/8 4-1/8 1/8 3.859±.028 .139±.004 98.02±0.71 3.53±0.10
BS242 4 4-1/4 1/8 3.984±.028 .139±.004 101.19±0.71 3.53±0.10
BS243 4-1/8 4-3/8 1/8 4.109±.028 .139±.004 104.37±0.71 3.53±0.10
BS244 4-1/4 4-1/2 1/8 4.234±.030 .139±.004 107.54±0.76 3.53±0.10
BS245 4-3/8 4-5/8 1/8 4.359±.030 .139±.004 110.72±0.76 3.53±0.10
BS246 4-1/2 4-3/4 1/8 4.484±.030 .139±.004 113.89±0.76 3.53±0.10
BS247 4-5/8 4-7/8 1/8 4.609±.030 .139±.004 117.07±0.76 3.53±0.10
BS248 4-3/4 5 1/8 4.734±.030 .139±.004 120.24±0.76 3.53±0.10
BS249 4-7/8 5-1/8 1/8 4.859±.035 .139±.004 123.42±0.89 3.53±0.10
BS250 5 5-1/4 1/8 4.984±.035 .139±.004 126.59±0.89 3.53±0.10
BS251 5-1/8 5-3/8 1/8 5.109±.035 .139±.004 129.77±0.89 3.53±0.10
BS252 5-1/4 5-1/2 1/8 5.234±.035 .139±.004 132.94±0.89 3.53±0.10
BS253 5-3/8 5-5/8 1/8 5.359±.035 .139±.004 136.12±0.89 3.53±0.10
BS254 5-1/2 5-3/4 1/8 5.484±.035 .139±.004 139.29±0.89 3.53±0.10
BS255 5-5/8 5-7/8 1/8 5.609±.035 .139±.004 142.47±0.89 3.53±0.10
BS256 5-3/4 6 1/8 5.734±.035 .139±.004 145.65±0.89 3.53±0.10
BS257 5-7/8 6-1/8 1/8 5.859±.035 .139±.004 148.82±0.89 3.53±0.10
BS258 6 6-1/4 1/8 5.984±.035 .139±.004 151.99±0.89 3.53±0.10
BS259 6-1/4 6-1/2 1/8 6.234±.040 .139±.004 158.34±1.02 3.53±0.10
BS260 6-1/2 6-3/4 1/8 6.484±.040 .139±.004 164.69±1.02 3.53±0.10
BS261 6-3/4 7 1/8 6.734±.040 .139±.004 171.04±1.02 3.53±0.10
BS262 7 7-1/4 1/8 6.984±.040 .139±.004 177.39±1.02 3.53±0.10
BS263 7-1/4 7-1/2 1/8 7.234±.045 .139±.004 183.74±1.14 3.53±0.10
BS264 7-1/2 7-3/4 1/8 7.484±.045 .139±.004 190.09±1.14 3.53±0.10
BS265 7-3/4 8 1/8 7.734±.045 .139±.004 196.44±1.14 3.53±0.10
BS266 8 8-1/4 1/8 7.984±.045 .139±.004 202.79±1.14 3.53±0.10
BS267 8-1/4 8-1/2 1/8 8.234±.050 .139±.004 209.14±1.27 3.53±0.10
BS268 8-1/2 8-3/4 1/8 8.484±.050 .139±.004 215.49±1.27 3.53±0.10
BS269 8-3/4 9 1/8 8.734±.050 .139±.004 221.84±1.27 3.53±0.10
BS270 9 9-1/4 1/8 8.984±.050 .139±.004 228.19±1.27 3.53±0.10
BS271 9-1/4 9-1/2 1/8 9.234±.055 .139±.004 234.54±1.40 3.53±0.10
BS272 9-1/2 9-3/4 1/8 9.484±.055 .139±.004 240.89±1.40 3.53±0.10
BS273 9-3/4 10 1/8 9.734±.055 .139±.004 247.24±1.40 3.53±0.10
BS274 10 10-1/4 1/8 9.984±.055 .139±.004 253.59±1.40 3.53±0.10
BS275 10-1/2 10-3/4 1/8 10.484±.065 .139±.004 266.29±1.40 3.53±0.10
BS276 11 11-1/4 1/8 10.984±.065 .139±.004 278.99±1.65 3.53±0.10
BS277 11-1/2 11-3/4 1/8 11.484±.065 .139±.004 291.69±1.65 3.53±0.10
BS278 12 12-1/4 1/8 11.984±.065 .139±.004 304.39±1.65 3.53±0.10
BS279 13 13-1/4 1/8 12.984±.065 .139±.004 329.79±1.65 3.53±0.10
BS280 14 14-1/4 1/8 13.984±.065 .139±.004 355.19±1.65 3.53±0.10
BS281 15 15-1/4 1/8 14.984±.065 .139±.004 380.59±1.65 3.53±0.10
BS282 16 16-1/4 1/8 15.955±.075 .139±.004 405.26±1.91 3.53±0.10
BS283 17 17-1/4 1/8 16.955±.080 .139±.004 430.66±2.03 3.53±0.10
BS284 18 18-1/4 1/8 17.955±.085 .139±.004 456.06±2.16 3.53±0.10
BS309 7/16 13/16 3/16 .412±.005 .210±.005 10.46±0.13 5.33±0.13
BS310 1/2 7/8 3/16 .475±.005 .210±.005 12.07±0.13 5.33±0.13
BS311 9/16 15-16 3/16 .537±.007 .210±.005 13.64±0.18 5.33±0.13
BS312 5/8 1 3/16 .600±.009 .210±.005 15.24±0.23 5.33±0.13
BS313 11-16 1-1/16 3/16 .662±.009 .210±.005 16.81±0.23 5.33±0.13
BS314 3/4 1-1/8 3/16 .725±.010 .210±.005 18.42±0.25 5.33±0.13
BS315 13/16 1-3/6 3/16 .787±.010 .210±.005 19.99±0.25 5.33±0.13
BS316 7/8 1-1/4 3/16 .850±.010 .210±.005 21.59±0.25 5.33±0.13
BS317 15/16 1-5/16 3/16 .912±.010 .210±.005 23.16±0.25 5.33±0.13
BS318 1 1-3/8 3/16 .975±.010 .210±.005 24.77±0.25 5.33±0.13
BS319 1-1/16 1-7/16 3/16 1.037±.010 .210±.005 26.34±0.25 5.33±0.13
BS320 1-1/8 1-1/2 3/16 1.100±.012 .210±.005 27.94±0.30 5.33±0.13
BS321 1-3/16 1-9/16 3/16 1.162±.012 .210±.005 29.51±0.30 5.33±0.13
BS322 1-1/4 1-5/8 3/16 1.225±.012 .210±.005 31.12±0.30 5.33±0.13
BS323 1-5/16 1-11/16 3/16 1.287±.012 .210±.005 32.69±0.30 5.33±0.13
BS324 1-3/8 1-3/4 3/16 1.350±.012 .210±.005 34.29±0.30 5.33±0.13
BS325 1-1/2 1-7/8 3/16 1.475±.015 .210±.005 37.47±0.38 5.33±0.13
BS326 1-5/8 2 3/16 1.600±.015 .210±.005 40.64±0.38 5.33±0.13
BS327 1-3/4 2-1/8 3/16 1.725±.015 .210±.005 43.82±0.38 5.33±0.13
BS328 1-7/8 2-1/4 3/16 1.850±.015 .210±.005 46.99±0.38 5.33±0.13
BS329 2 2-3/8 3/16 1.975±.018 .210±.005 50.17±0.46 5.33±0.13
BS330 2-1/8 2-1/2 3/16 2.100±.018 .210±.005 53.34±0.46 5.33±0.13
BS331 2-1/4 2-5/8 3/16 2.225±.018 .210±.005 56.52±0.46 5.33±0.13
BS332 2-3/8 2-3/4 3/16 2.350±.018 .210±.005 59.69±0.46 5.33±0.13
BS333 2-1/2 2-7/8 3/16 2.475±.020 .210±.005 62.87±0.51 5.33±0.13
BS334 2-5/8 3 3/16 2.600±.020 .210±.005 66.04±0.51 5.33±0.13
BS335 2-3/4 3-1/8 3/16 2.725±.020 .210±.005 69.22±0.51 5.33±0.13
BS336 2-7/8 3-1/4 3/16 2.850±.020 .210±.005 72.39±0.51 5.33±0.13
BS337 3 3-3/8 3/16 2.975±.024 .210±.005 75.57±0.61 5.33±0.13
BS338 3-1/8 3-1/2 3/16 3.100±.024 .210±.005 78.74±0.61 5.33±0.13
BS339 3-1/4 3-5/8 3/16 3.225±.024 .210±.005 81.92±0.61 5.33±0.13
BS340 3-3/8 3-3/4 3/16 3.350±.024 .210±.005 85.09±0.61 5.33±0.13
BS341 3-1/2 3-7/8 3/16 3.475±.024 .210±.005 88.27±0.61 5.33±0.13
BS342 3-5/8 4 3/16 3.600±.028 .210±.005 91.44±0.71 5.33±0.13
BS343 3-3/4 4-1/8 3/16 3.725±.028 .210±.005 94.62±0.71 5.33±0.13
BS344 3-7/8 4-1/4 3/16 3.850±.028 .210±.005 97.79±0.71 5.33±0.13
BS345 4 4-3/8 3/16 3.975±.028 .210±.005 100.97±0.71 5.33±0.13
BS346 4-1/8 4-1/2 3/16 4.100±.028 .210±.005 104.14±0.71 5.33±0.13
BS347 4-1/4 4-5/8 3/16 4.225±.030 .210±.005 107.32±0.76 5.33±0.13
BS348 4-3/8 4-3/4 3/16 4.350±.030 .210±.005 110.49±0.76 5.33±0.13
BS349 4-1/2 4-7/8 3/16 4.475±.030 .210±.005 113.67±0.76 5.33±0.13
BS350 4-5/8 5 3/16 4.600±.030 .210±.005 116.84±0.76 5.33±0.13
BS351 4-3/4 5-1/8 3/16 4.725±.030 .210±.005 120.02±0.76 5.33±0.13
BS352 4-7/8 5-1/4 3/16 4.850±.030 .210±.005 123.19±0.76 5.33±0.13
BS353 5 5-3/8 3/16 4.975±.037 .210±.005 126.37±0.94 5.33±0.13
BS354 5-1/8 5-1/2 3/16 5.100±.037 .210±.005 129.54±0.94 5.33±0.13
BS355 5-1/4 5-5/8 3/16 5.225±.037 .210±.005 132.72±0.94 5.33±0.13
BS356 5-3/8 5-3/4 3/16 5.350±.037 .210±.005 135.89±0.94 5.33±0.13
BS357 5-1/2 5-7/8 3/16 5.475±.037 .210±.005 139.07±0.94 5.33±0.13
BS358 5-5/8 6 3/16 5.600±.037 .210±.005 142.24±0.94 5.33±0.13
BS359 5-3/4 6-1/8 3/16 5.725±.037 .210±.005 145.42±0.94 5.33±0.13
BS360 5-7/8 6-1/4 3/16 5.850±.037 .210±.005 148.59±0.94 5.33±0.13
BS361 6 6-3/8 3/16 5.975±.037 .210±.005 151.77±0.94 5.33±0.13
BS362 6-1/4 6-5/8 3/16 6.225±.040 .210±.005 158.12±1.02 5.33±0.13
BS363 6-1/2 6-7/8 3/16 6.475±.040 .210±.005 164.47±1.02 5.33±0.13
BS364 6-3/4 7-1/8 3/16 6.725±.040 .210±.005 170.82±1.02 5.33±0.13
BS365 7 7-3/8 3/16 6.975±.040 .210±.005 177.17±1.02 5.33±0.13
BS366 7-1/4 7-5/8 3/16 7.225±.045 .210±.005 183.52±1.14 5.33±0.13
BS367 7-1/2 7-7/8 3/16 7.475±.045 .210±.005 189.87±1.14 5.33±0.13
BS368 7-3/4 8-1/8 3/16 7.725±.045 .210±.005 196.22±1.14 5.33±0.13
BS369 8 8-3/8 3/16 7.975±.045 .210±.005 202.57±1.14 5.33±0.13
BS370 8-1/4 8-5/8 3/16 8.225±.050 .210±.005 208.92±1.27 5.33±0.13
BS371 8-1/2 8-7/8 3/16 8.475±.050 .210±.005 215.27±1.27 5.33±0.13
BS372 8-3/4 9-1/8 3/16 8.725±.050 .210±.005 221.62±1.27 5.33±0.13
BS373 9 9-3/8 3/16 8.975±.050 .210±.005 227.97±1.27 5.33±0.13
BS374 9-1/4 9-5/8 3/16 9.225±.055 .210±.005 234.32±1.40 5.33±0.13
BS375 9-1/2 9-7/8 3/16 9.475±.055 .210±.005 240.67±1.40 5.33±0.13
BS376 9-3/4 10-1/8 3/16 9.725±.055 .210±.005 247.02±1.40 5.33±0.13
BS377 10 10-3/8 3/16 9.975±.055 .210±.005 253.37±1.40 5.33±0.13
BS378 10-1/2 10-7/8 3/16  10.475±.060 .210±.005 266.07±1.52 5.33±0.13
BS379 11 11-3/8 3/16 10.975±.060 .210±.005 278.77±1.52 5.33±0.13
BS380 11-1/2 11-7/8 3/16 11.475±.065 .210±.005 291.47±1.65 5.33±0.13
BS381 12 12-3/8 3/16 11.975±.065 .210±.005 304.17±1.65 5.33±0.13
BS382 13 13-3/8 3/16 12.975±.065 .210±.005 329.57±1.65 5.33±0.13
BS383 14 14-3/8 3/16 13.975±.070 .210±.005 354.97±1.78 5.33±0.13
BS384 15 15-3/8 3/16 14.975±.070 .210±.005 380.37±1.78 5.33±0.13
BS385 16 16-3/8 3/16 15.955±.075 .210±.005 405.26±1.91 5.33±0.13
BS386 17 17-3/8 3/16 16.955±.080 .210±.005 430.66±2.03 5.33±0.13
BS387 18 18-3/8 3/16 17.955±.085 .210±.005 456.06±2.16 5.33±0.13
BS388 19 19-3/8 3/16 18.955±.090 .210±.005 481.41±2.29 5.33±0.13
BS389 20 20-3/8 3/16 19.955±.095 .210±.005 506.81±2.41 5.33±0.13
BS390 21 21-3/8 3/16 20.955±.095 .210±.005 532.21±2.41 5.33±0.13
BS391 22 22-3/8 3/16 21.955±.100 .210±.005 557.61±2.54 5.33±0.13
BS392 23 23-3/8 3/16 22.940±.105 .210±.005 582.68±2.67 5.33±0.13
BS393 24 24-3/8 3/16 23.940±.110 .210±.005 608.08±2.79 5.33±0.13
BS394 25 25-3/8 3/16 24.940±.115 .210±.005 633.48±2.92 5.33±0.13
BS395 26 26-3/8 3/16 25.940±.120 .210±.005 658.88±3.05 5.33±0.13
BS425 4-1/2 5 1/4 4.475±.033 .275±.006 113.67±0.84 6.99±0.15
BS426 4-5/8 5-1/8 1/4 4.600±.033 .275±.006 116.84±0.84 6.99±0.15
BS427 4-3/4 5-1/4 1/4 4.725±.033 .275±.006 120.02±0.84 6.99±0.15
BS428 4-7/8 5-3/8 1/4 4.850±.033 .275±.006 123.19±0.84 6.99±0.15
BS429 5 5-1/2 1/4 4.975±.037 .275±.006 126.37±0.94 6.99±0.15
BS430 5-1/8 5-5/8 1/4 5.100±.037 .275±.006 129.54±0.94 6.99±0.15
BS431 5-1/4 5-3/4 1/4 5.225±.037 .275±.006 132.72±0.94 6.99±0.15
BS432 5-3/8 5-7/8 1/4 5.350±.037 .275±.006 135.89±0.94 6.99±0.15
BS433 5-1/2 6 1/4 5.475±.037 .275±.006 139.07±0.94 6.99±0.15
BS434 5-5/8 6-1/8 1/4 5.600±.037 .275±.006 142.24±0.94 6.99±0.15
BS435 5-3/4 6-1/4 1/4 5.725±.037 .275±.006 145.42±0.94 6.99±0.15
BS436 5-7/8 6-3/8 1/4 5.850±.037 .275±.006 148.59±0.94 6.99±0.15
BS437 6 6-1/2 1/4 5.975±.037 .275±.006 151.77±0.94 6.99±0.15
BS438 6-1/4 6-3/4 1/4 6.225±.040 .275±.006 158.12±1.02 6.99±0.15
BS439 6-1/2 7 1/4 6.475±.040 .275±.006 164.47±1.02 6.99±0.15
BS440 6-3/4 7-1/4 1/4 6.725±.040 .275±.006 170.82±1.02 6.99±0.15
BS441 7 7-1/2 1/4 6.975±.040 .275±.006 177.17±1.02 6.99±0.15
BS442 7-1/4 7-3/4 1/4 7.225±.045 .275±.006 183.52±1.14 6.99±0.15
BS443 7-1/2 8 1/4 7.475±.045 .275±.006 189.87±1.14 6.99±0.15
BS444 7-3/4 8-1/4 1/4 7.725±.045 .275±.006 196.22±1.14 6.99±0.15
BS445 8 8-1/2 1/4 7.975±.045 .275±.006 202.57±1.14 6.99±0.15
BS446 8-1/2 9 1/4 8.475±.055 .275±.006 215.27±1.40 6.99±0.15
BS447 9 9-1/2 1/4 8.975±.055 .275±.006 227.97±1.40 6.99±0.15
BS448 9-1/2 10 1/4 9.475±.055 .275±.006 240.67±1.40 6.99±0.15
BS449 10 10-1/2 1/4 9.975±.055 .275±.006 253.37±1.40 6.99±0.15
BS450 10-1/2 11 1/4 10.475±.060 .275±.006 266.07±1.52 6.99±0.15
BS451 11 11-1/2 1/4 10.975±.060 .275±.006 278.77±1.52 6.99±0.15
BS452 11-1/2 12 1/4 11.475±.060 .275±.006 291.47±1.52 6.99±0.15
BS453 12 12-1/2 1/4 11.975±.060 .275±.006 304.17±1.52 6.99±0.15
BS454 12-1/2 13 1/4 12.475±.060 .275±.006 316.87±1.52 6.99±0.15
BS455 13 13-1/2 1/4 12.975±.060 .275±.006 329.57±1.52 6.99±0.15
BS456 13-1/2 14 1/4 13.457±.070 .275±.006 342.27±1.78 6.99±0.15
BS457 14 14-1/2 1/4 13.975±.070 .275±.006 354.97±1.78 6.99±0.15
BS458 14-1/2 15 1/4 14.475±.070 .275±.006 367.67±1.78 6.99±0.15
BS459 15 15-1/2 1/4 14.975±.070 .275±.006 380.37±1.78 6.99±0.15
BS460 15-1/2 16 1/4 15.475±.070 .275±.006 393.07±1.78 6.99±0.15
BS461 16 16-1/2 1/4 15.955±.075 .275±.006 405.26±1.91 6.99±0.15
BS462 16-1/2 17 1/4 16.455±.075 .275±.006 417.96±1.91 6.99±0.15
BS463 17 17-1/2 1/4 16.955±.080 .275±.006 430.66±2.03 6.99±0.15
BS464 17-1/2 18 1/4 17.455±.085 .275±.006 443.36±2.16 6.99±0.15
BS465 18 18-1/2 1/4 17.955±.085 .275±.006 456.06±2.16 6.99±0.15
BS466 18-1/2 19 1/4 18.455±.085 .275±.006 468.76±2.16 6.99±0.15
BS467 19 19-1/2 1/4 18.955±.090 .275±.006 481.46±2.29 6.99±0.15
BS468 19-1/2 20 1/4 19.455±.090 .275±.006 494.16±2.29 6.99±0.15
BS469 20 20-1/2 1/4 19.955±.095 .275±.006 506.86±2.41 6.99±0.15
BS470 21 21-1/2 1/4 20.955±.095 .275±.006 532.26±2.41 6.99±0.15
BS471 22 22-1/2 1/4 21.955±.100 .275±.006 557.66±2.54 6.99±0.15
BS472 23 23-1/2 1/4 22.940±.105 .275±.006 582.68±2.67 6.99±0.15
BS473 24 24-1/2 1/4 23.940±.110 .275±.006 608.08±2.79 6.99±0.15
BS474 25 25-1/2 1/4 24.940±.115 .275±.006 633.48±2.92 6.99±0.15
BS475 26 26-1/2 1/4 25.940±.120  .275±.006  658.88±3.05  6.99±0.15
BS901   3/32   .185±.005 .056±.003 4.70±0.13 1.42±0.08
BS902   1/8   .239±.005 .064±.003 6.07±0.13 1.63±0.08
BS903   3/16   .301±.005 .064±.003 7.65±0.13 1.63±0.08
BS904   1/4   .351±.005 .072±.003 8.92±0.13 1.83±0.08
BS905   5/16   .414±.005 .072±.003 10.52±0.13 1.83±0.08
BS906   3/8   .468±.005 .078±.003 11.89±0.13 1.98±0.08
BS907   7/16   .530±.007 .082±.003 13.46±0.18 2.08±0.08
BS908   1/2   .644±.009 .087±.003 16.36±0.23 2.21±0.08
BS909   9/16   .706±.009 .097±.003 17.93±0.23 2.46±0.08
BS910   5/8   .755±.009 .097±.003 19.18±0.23 2.46±0.08
BS911   11/16   .863±.009 .116±.004 21.92±0.23 2.95±0.10
BS912   3/4   .924±.009 .116±.004 23.47±0.23 2.95±0.10
BS913   13/16   .986±.010 .116±.004 25.04±0.26 2.95±0.10
BS914   7/8   1.047±.010 .116±.004 26.59±0.26 2.95±0.10
BS916   1   1.171±.010 .116±.004 29.74±0.26 2.95±0.10
BS918   1-1/8   1.355±.012 .116±.004 34.42±0.30 2.95±0.10
BS920   1-1/4   1.475±.014 .116±.004 37.47±0.36 3.00±0.10
BS924   1-1/2   1.720±.014 .116±.004 43.69±0.36 3.00±0.10
BS928   1-3/4   2.090±.018 .116±.004 53.09±0.46 3.00±0.10
BS932   2   2.337±.018 .116±.004 59.36±0.46 3.00±0.10