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Unit:inch

Extra-duty Helical Spring - Lock Washers

ASME/ANSI B 18.21.1 (T3) - 1999

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美标ASME/ANSI B18.21.1 (T3) - 1999 ASME/AN Extra-duty Helical Spring - Lock Washers
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 *Models with different eras.

Size
2# 3# 4# 5# 6# 8# 10# 12# 1/4 5/16 3/8
d max
min
dc max
h min
n min
n1 min
0.094 0.107 0.120 0.133 0.148 0.174 0.200 0.227 0.260 0.322 0.385
0.088 0.101 0.114 0.127 0.141 0.167 0.193 0.220 0.252 0.314 0.377
0.208 0.239 0.253 0.300 0.314 0.375 0.434 0.497 0.533 0.619 0.738
0.027 0.034 0.034 0.045 0.045 0.057 0.068 0.080 0.084 0.108 0.123
0.053 0.062 0.062 0.079 0.079 0.096 0.112 0.130 0.132 0.143 0.170
0.037 0.043 0.043 0.055 0.055 0.067 0.078 0.091 0.092 0.100 0.119
Size
7/16 1/2 9/16 5/8 11/16 3/4 13/16 7/8 15/16 1 1-1/16
d max
min
dc max
h min
n min
n1 min
0.450 0.512 0.574 0.641 0.704 0.766 0.832 0.894 0.958 1.024 1.087
0.440 0.502 0.564 0.628 0.691 0.753 0.816 0.878 0.941 1.003 1.066
0.836 0.935 1.035 1.151 1.252 1.355 1.458 1.571 1.684 1.794 1.905
0.143 0.162 0.182 0.202 0.221 0.241 0.261 0.285 0.308 0.330 0.352
0.186 0.204 0.223 0.242 0.260 0.279 0.298 0.322 0.345 0.366 0.389
0.130 0.143 0.156 0.169 0.182 0.195 0.209 0.225 0.241 0.256 0.272
Size
1-1/8 1-3/16 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-5/8 1-3/4 1-7/8 2
d max
min
dc max
h min
n min
n1 min
1.153 1.217 1.280 1.344 1.408 1.472 1.534 1.663 1.789 1.914 2.039
1.129 1.192 1.254 1.317 1.379 1.442 1.504 1.633 1.758 1.883 2.008
2.013 2.107 2.222 2.327 2.429 2.530 2.627 2.784 2.902 3.027 3.156
0.375 0.396 0.417 0.438 0.458 0.478 0.496 0.496 0.526 0.526 0.526
0.411 0.431 0.452 0.472 0.491 0.509 0.526 0.526 0.532 0.532 0.532
0.288 0.302 0.316 0.330 0.344 0.356 0.368 0.368 0.372 0.372 0.372

Alternative history

ANSI/ASME B 18.21.1 - 1999 ANSI/ASME B 18.21.1 - 2009 ASME 18.21.1 - 2009(R2016)
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