
Fornecedores de Anilhas de pressão helicoidais, tamanhos em polegadas
Este produto é regulamentado pelas seguintes normas:
ASME B18.21.1 TABLE 1 ASME B18.21.1 TABLE 2 ASME B18.21.1 TABLE 3 ASME B18.21.1 TABLE 4
Dados técnicos
Anilhas de pressão helicoidais, tamanhos em polegadas


Este produto é regulamentado pelas seguintes normas:
Standard ASME B18.21.1 TABLE 1
Anilhas de pressão helicoidais, série regularInformações restritas aos usuários inscritos: Login | Registre-se agora para uma prova gratuita de 14 dias.
Dimensions in inches: source ASME B18.21.1 -2009-Table 1 Regular series | |||||||
Nominal washer size | A max | A min | B max | T mean section thickness (t1+t)/2 | W min | ||
No.2 (0.086) | 0.094 | 0.088 | 0.172 | 0.020 | 0.035 | ||
No.3 (0.099) | 0.107 | 0.101 | 0.195 | 0.025 | 0.040 | ||
No.4 (0.112) | 0.120 | 0.114 | 0.209 | 0.025 | 0.040 | ||
No.5 (0.125) | 0.133 | 0.127 | 0.236 | 0.031 | 0.047 | ||
No.6 (0.138) | 0.148 | 0.141 | 0.250 | 0.031 | 0.047 | ||
No.8 (0.164) | |||||||
No.10 (0.190) | |||||||
No.12 (0.216) | |||||||
1/4- (0.250) | |||||||
5/16- (0.3125) | |||||||
3/8- (0.375) | |||||||
7/16-(0.4375) | |||||||
1/2- (0.5) | |||||||
9/16- (0.5625) | |||||||
5/8- (0.625) | |||||||
11/16- (0.6875) | |||||||
3/4- (0.75) | |||||||
13/16-(0.8125) | |||||||
7/8- (0.875) | |||||||
15/16 (0.9375) | |||||||
1- (1) | |||||||
1-1/16 (1.0625) | |||||||
1-1/8 (1.125) | |||||||
1-3/16 (1.875) | |||||||
1- 1/4 (1.25) | |||||||
1 - 5/16 (1.3125) | |||||||
1 - 3/8 (1.375) | |||||||
1 - 7/16 (1.4375) | |||||||
1 - 1/2 (1.5) | |||||||
1 - 5/8 (1.625) | |||||||
1 - 3/4 (1.75) | |||||||
1 - 7/8 (1.875) | |||||||
2 (2) | |||||||
2 - 1/4 (2.5) | |||||||
2 - 1/2 (2.5) | |||||||
2 - 3/4 (2.75) | |||||||
3 (3) |
Standard ASME B18.21.1 TABLE 2
Anilhas de pressão helicoidais, série pesadaInformações restritas aos usuários inscritos: Login | Registre-se agora para uma prova gratuita de 14 dias.
Dimensions in inches: source ASME B18.21.1 -2009-Table 2 Heavy series | |||||||
Nominal Washer Size | A max | A min | B max | T mean section thickness (t1+t)/2 | W min | ||
No.2 (0.086) | 0.094 | 0.088 | 0.182 | 0.025 | 0.040 | ||
No.3 (0.099) | 0.107 | 0.101 | 0.209 | 0.031 | 0.047 | ||
No.4 (0.112) | 0.120 | 0.114 | 0.223 | 0.031 | 0.047 | ||
No.5 (0.125) | 0.133 | 0.127 | 0.252 | 0.040 | 0.055 | ||
No.6 (0.138) | 0.148 | 0.141 | 0.266 | 0.040 | 0.055 | ||
No.8 (0.164) | |||||||
No.10 (0.190) | |||||||
No.12 (0.216) | |||||||
1/4 - (0.250) | |||||||
5/16 - (0.3125) | |||||||
3/8 - (0.375) | |||||||
7/16 -(0.4375) | |||||||
1/2 - (0.5) | |||||||
9/16 - (0.5625) | |||||||
5/8 - (0.625) | |||||||
11/16 - (0.6875) | |||||||
3/4 - (0.75) | |||||||
13/16 -(0.8125) | |||||||
7/8 - (0.875) | |||||||
15/16 - (0.9375) | |||||||
1 - (1) | |||||||
1-1/16 (1.0625) | |||||||
1-1/8 (1.125) | |||||||
1-3/16 (1.875) | |||||||
1- 1/4 (1.25) | |||||||
1 - 5/16 (1.3125) | |||||||
1 - 3/8 (1.375) | |||||||
1 - 7/16 (1.4375) | |||||||
1 - 1/2 (1.5) | |||||||
1 - 5/8 (1.625) | |||||||
1 - 3/4 (1.75) | |||||||
1 - 7/8 (1.875) | |||||||
2 (2) | |||||||
2 - 1/4 (2.5) | |||||||
2 - 1/2 (2.5) | |||||||
2 - 3/4 (2.75) | |||||||
3 (3) |
Standard ASME B18.21.1 TABLE 3
Anilhas de pressão helicoidais série extra-dutyInformações restritas aos usuários inscritos: Login | Registre-se agora para uma prova gratuita de 14 dias.
Dimensions in inches: source ASME B18.21.1 -2009-Table 3 Extra-duty series | |||||||
Nominal washer size | A max | A min | B max | T mean section thickness (t1+t)/2 | W min | ||
No.2 (0.086) | 0.094 | 0.088 | 0.208 | 0.027 | 0.053 | ||
No.3 (0.099) | 0.107 | 0.101 | 0.239 | 0.034 | 0.062 | ||
No.4 (0.112) | 0.120 | 0.114 | 0.253 | 0.034 | 0.062 | ||
No.5 (0.125) | 0.133 | 0.127 | 0.300 | 0.045 | 0.079 | ||
No.6 (0.138) | 0.148 | 0.141 | 0.314 | 0.045 | 0.079 | ||
No.8 (0.164) | |||||||
No.10 (0.190) | |||||||
No.12 (0.216) | |||||||
1/4 - (0.250) | |||||||
5/16 - (0.3125) | |||||||
3/8 - (0.375) | |||||||
7/16 -(0.4375) | |||||||
1/2 - (0.5) | |||||||
9/16 - (0.5625) | |||||||
5/8 - (0.625) | |||||||
11/16 - (0.6875) | |||||||
3/4 - (0.75) | |||||||
13/16 -(0.8125) | |||||||
7/8 - (0.875) | |||||||
15/16 (0.9375) | |||||||
1 - (1) | |||||||
1-1/16 (1.0625) | |||||||
1-1/8 (1.125) | |||||||
1-3/16 (1.875) | |||||||
1- 1/4 (1.25) | |||||||
1 - 5/16 (1.3125) | |||||||
1 - 3/8 (1.375) | |||||||
1 - 7/16 (1.4375) | |||||||
1 - 1/2 (1.5) | |||||||
1 - 5/8 (1.625) | |||||||
1 - 3/4 (1.75) | |||||||
1 - 7/8 (1.875) | |||||||
2 (2) |
Standard ASME B18.21.1 TABLE 4
Anilhas de pressão helicoidais, colarinho altoInformações restritas aos usuários inscritos: Login | Registre-se agora para uma prova gratuita de 14 dias.
Dimensions in inches: source ASME B18.21.1 -2009- Table 4 High Collar | |||||||
Nominal washer size | A max | A min | B max | T mean section thickness (t1+t)/2 | W min | ||
No.4 (0.112) | 0.120 | 0.114 | 0.173 | 0.022 | 0.022 | ||
No.5 (0.125) | 0.133 | 0.127 | 0.202 | 0.030 | 0.030 | ||
No.6 (0.138) | 0.148 | 0.141 | 0.216 | 0.030 | 0.030 | ||
No.8 (0.164) | |||||||
No.10 (0.190) | |||||||
1/4 - (0.250) | |||||||
5/16 - (0.3125) | |||||||
3/8 - (0.375) | |||||||
7/16 -(0.4375) | |||||||
1/2 - (0.5) | |||||||
5/8 - (0.625) | |||||||
3/4 - (0.75) | |||||||
7/8 - (0.875) | |||||||
1 - (1) | |||||||
1-1/8 (1.125) | |||||||
1- 1/4 (1.25) | |||||||
1 - 3/8 (1.375) | |||||||
1 - 1/2 (1.5) | |||||||
1 - 3/4 (1.75) | |||||||
2 - (2) | |||||||
2 - 1/4 (2.5) | |||||||
2 - 1/2 (2.5) | |||||||
2 - 3/4 (2.75) | |||||||
3 - (3) |
Detalhes
Anilhas de pressão helicoidais, tamanhos em polegadas


Dimensions in inches: source ASME B18.21.1 -2009-Table 1 Regular series
|
|||||||
Nominal washer size |
A max
|
A min |
B max
|
T
mean
section thickness
(t1+t)/2
|
W min
|
||
No.2 (0.086)
|
0.094 | 0.088 | 0.172 | 0.020 | 0.035 | ||
No.3 (0.099)
|
0.107 | 0.101 | 0.195 | 0.025 | 0.040 | ||
No.4 (0.112)
|
0.120 | 0.114 | 0.209 | 0.025 | 0.040 | ||
No.5 (0.125)
|
0.133 | 0.127 | 0.236 | 0.031 | 0.047 | ||
No.6 (0.138)
|
0.148 | 0.141 | 0.250 | 0.031 | 0.047 | ||
No.8 (0.164)
|
0.174 | 0.167 | 0.293 | 0.040 | 0.055 | ||
No.10 (0.190)
|
0.2 | 0.193 | 0.334 | 0.047 | 0.062 | ||
No.12 (0.216)
|
0.227 | 0.220 | 0.377 | 0.056 | 0.070 | ||
1/4- (0.250)
|
0.26 | 0.252 | 0.487 | 0.062 | 0.109 | ||
5/16- (0.3125)
|
0.322 | 0.314 | 0.583 | 0.078 | 0.125 | ||
3/8- (0.375)
|
0.385 | 0.377 | 0.680 | 0.094 | 0.141 | ||
7/16-(0.4375)
|
0.45 | 0.44 | 0.776 | 0.109 | 0.156 | ||
1/2- (0.5)
|
0.641 | 0.628 | 1.073 | 0.156 | 0.203 | ||
9/16- (0.5625)
|
0.574 | 0.564 | 0.965 | 0.141 | 0.188 | ||
5/8- (0.625)
|
0.641 | 0.628 | 1.073 | 0.156 | 0.203 | ||
11/16- (0.6875)
|
0.704 | 0.691 | 1.170 | 0.172 | 0.219 | ||
3/4- (0.75)
|
0.766 | 0.753 | 1.265 | 0.188 | 0.234 | ||
13/16-(0.8125)
|
0.832 | 0.816 | 1.363 | 0.203 | 0.250 | ||
7/8- (0.875)
|
0.894 | 0.878 | 1.459 | 0.219 | 0.266 | ||
15/16 (0.9375) | 0.958 | 0.941 | 1.556 | 0.234 | 0.281 | ||
1- (1)
|
1.024
|
1.003 |
1.656
|
0.25
|
0.297
|
||
1-1/16 (1.0625) | 1.087 | 1.066 | 1.751 | 0.266 | 0.312 | ||
1-1/8 (1.125) | 1.153 | 1.129 | 1.847 | 0.281 | 0.328 | ||
1-3/16 (1.875) | 1.217 | 1.192 | 1.943 | 0.297 | 0.344 | ||
1- 1/4 (1.25) | 1.280 | 1.254 | 2.036 | 0.312 | 0.359 | ||
1 - 5/16 (1.3125) | 1.344 | 1.317 | 2.133 | 0.328 | 0.375 | ||
1 - 3/8 (1.375) | 1.408 | 1.379 | 2.219 | 0.344 | 0.391 | ||
1 - 7/16 (1.4375) | 1.472 | 1.442 | 2.234 | 0.359 | 0.406 | ||
1 - 1/2 (1.5) | 1.534 | 1.504 | 2.419 | 0.375 | 0.422 | ||
1 - 5/8 (1.625) | 1.663 | 1.663 | 2.553 | 0.389 | 0.424 | ||
1 - 3/4 (1.75) | 1.798 | 1.758 | 2.679 | 0.389 | 0.424 | ||
1 - 7/8 (1.875) | 1.914 | 1.833 | 2.811 | 0.422 | 0.427 | ||
2 (2) | 20.39 | 2.008 | 2.936 | 0.422 | 0.427 | ||
2 - 1/4 (2.5) | 2.293 | 2.262 | 3.221 | 0.440 | 0.442 | ||
2 - 1/2 (2.5) | 2.543 | 2.512 | 3.471 | 0.440 | 0.442 | ||
2 - 3/4 (2.75) | 2.793 | 2.762 | 3.824 | 0.458 | 0.491 | ||
3 (3) | 3.043 | 3.012 | 4.074 | 0.458 | 0.491 |
![]() |
|||||||
Dimensions in inches: source ASME B18.21.1 -2009-Table 2 Heavy series
|
|||||||
Nominal Washer Size |
A max
|
A min |
B max
|
T
mean
section thickness
(t1+t)/2
|
W min
|
||
No.2 (0.086)
|
0.094 | 0.088 | 0.182 | 0.025 | 0.040 | ||
No.3 (0.099)
|
0.107 | 0.101 | 0.209 | 0.031 | 0.047 | ||
No.4 (0.112)
|
0.120 | 0.114 | 0.223 | 0.031 | 0.047 | ||
No.5 (0.125)
|
0.133 | 0.127 | 0.252 | 0.040 | 0.055 | ||
No.6 (0.138)
|
0.148 | 0.141 | 0.266 | 0.040 | 0.055 | ||
No.8 (0.164)
|
0.174 | 0.167 | 0.307 | 0.047 | 0.062 | ||
No.10 (0.190)
|
0.2 | 0.193 | 0.350 | 0.056 | 0.070 | ||
No.12 (0.216)
|
0.227 | 0.220 | 0.391 | 0.063 | 0.077 | ||
1/4 - (0.250)
|
0.26 | 0.252 | 0.489 | 0.077 | 0.110 | ||
5/16 - (0.3125)
|
0.322 | 0.314 | 0.593 | 0.097 | 0.130 | ||
3/8 - (0.375)
|
0.385 | 0.377 | 0.688 | 0.115 | 0.145 | ||
7/16 -(0.4375)
|
0.45 | 0.44 | 0.784 | 0.133 | 0.160 | ||
1/2 - (0.5)
|
0.512 | 0.502 | 0.879 | 0.151 | 0.176 | ||
9/16 - (0.5625)
|
0.574 | 0.564 | 0.975 | 0.170 | 0.193 | ||
5/8 - (0.625)
|
0.641 | 0.628 | 1.087 | 0.189 | 0.210 | ||
11/16 - (0.6875)
|
0.704 | 0.691 | 1.186 | 0.207 | 0.227 | ||
3/4 - (0.75)
|
0.766 | 0.753 | 1.285 | 0.226 | 0.244 | ||
13/16 -(0.8125)
|
0.832 | 0.816 | 1.387 | 0.246 | 0.262 | ||
7/8 - (0.875)
|
0.894 | 0.878 | 1.489 | 0.266 | 0.281 | ||
15/16 - (0.9375) | 0.958 | 0.941 | 1.59 | 0.284 | 0.298 | ||
1 - (1)
|
1.024
|
1.003 |
1.7
|
0.306
|
0.319
|
||
1-1/16 (1.0625) | 1.087 | 1.066 | 1.803 | 0.326 | 0.338 | ||
1-1/8 (1.125) | 1.153 | 1.129 | 1.903 | 0.345 | 0.356 | ||
1-3/16 (1.875) | 1.217 | 1.192 | 2.001 | 0.364 | 0.373 | ||
1- 1/4 (1.25) | 1.280 | 1.254 | 2.104 | 0.384 | 0.393 | ||
1 - 5/16 (1.3125) | 1.344 | 1.317 | 2.203 | 0.403 | 0.410 | ||
1 - 3/8 (1.375) | 1.408 | 1.379 | 2.301 | 0.422 | 0.427 | ||
1 - 7/16 (1.4375) | 1.472 | 1.442 | 2.396 | 0.440 | 0.442 | ||
1 - 1/2 (1.5) | 1.534 | 1.504 | 2.491 | 0.458 | 0.458 | ||
1 - 5/8 (1.625) | 1.663 | 1.663 | 2.694 | 0.458 | 0.491 | ||
1 - 3/4 (1.75) | 1.798 | 1.758 | 2.820 | 0.458 | 0.491 | ||
1 - 7/8 (1.875) | 1.914 | 1.833 | 2.945 | 0.458 | 0.491 | ||
2 (2) | 2.039 | 2.008 | 3.144 | 0.496 | 0.526 | ||
2 - 1/4 (2.5) | 2.293 | 2.262 | 3.398 | 0.496 | 0.526 | ||
2 - 1/2 (2.5) | 2.543 | 2.512 | 3.648 | 0.496 | 0.526 | ||
2 - 3/4 (2.75) | 2.793 | 2.762 | 3.910 | 0.526 | 0.532 | ||
3 (3) | 3.043 | 3.012 | 4.160 | 0.526 | 0.532 |
![]() |
|||||||
Dimensions in inches: source ASME B18.21.1 -2009-Table 3 Extra-duty series
|
|||||||
Nominal washer size |
A max
|
A min |
B max
|
T
mean section thickness
(t1+t)/2
|
W min
|
||
No.2 (0.086)
|
0.094 | 0.088 | 0.208 | 0.027 | 0.053 | ||
No.3 (0.099)
|
0.107 | 0.101 | 0.239 | 0.034 | 0.062 | ||
No.4 (0.112)
|
0.120 | 0.114 | 0.253 | 0.034 | 0.062 | ||
No.5 (0.125)
|
0.133 | 0.127 | 0.300 | 0.045 | 0.079 | ||
No.6 (0.138)
|
0.148 | 0.141 | 0.314 | 0.045 | 0.079 | ||
No.8 (0.164)
|
0.174 | 0.167 | 0.375 | 0.057 | 0.096 | ||
No.10 (0.190)
|
0.2 | 0.193 | 0.434 | 0.068 | 0.112 | ||
No.12 (0.216)
|
0.227 | 0.220 | 0.497 | 0.080 | 0.130 | ||
1/4 - (0.250)
|
0.26 | 0.252 | 0.533 | 0.084 | 0.132 | ||
5/16 - (0.3125)
|
0.322 | 0.314 | 0.619 | 0.108 | 0.143 | ||
3/8 - (0.375)
|
0.385 | 0.377 | 0.738 | 0.123 | 0.170 | ||
7/16 -(0.4375)
|
0.45 | 0.44 | 0.836 | 0.143 | 0.186 | ||
1/2 - (0.5)
|
0.512 | 0.502 | 0.935 | 0.162 | 0.204 | ||
9/16 - (0.5625)
|
0.574 | 0.564 | 1.035 | 0.182 | 0.223 | ||
5/8 - (0.625)
|
0.641 | 0.628 | 1.151 | 0.202 | 0.242 | ||
11/16 - (0.6875)
|
0.704 | 0.691 | 1.252 | 0.221 | 0.260 | ||
3/4 - (0.75)
|
0.766 | 0.753 | 1.355 | 0.241 | 0.279 | ||
13/16 -(0.8125)
|
0.832 | 0.816 | 1.458 | 0.261 | 0.298 | ||
7/8 - (0.875)
|
0.894 | 0.878 | 1.751 | 0.285 | 0.322 | ||
15/16 (0.9375) | 0.958 | 0.941 | 1.684 | 0.308 | 0.345 | ||
1 - (1)
|
1.024
|
1.003 |
1.794
|
0.330
|
0.366
|
||
1-1/16 (1.0625) | 1.087 | 1.066 | 1.905 | 0.352 | 0.389 | ||
1-1/8 (1.125) | 1.153 | 1.129 | 2.013 | 0.375 | 0.411 | ||
1-3/16 (1.875) | 1.217 | 1.192 | 2.107 | 0.396 | 0.431 | ||
1- 1/4 (1.25) | 1.280 | 1.254 | 2.222 | 0.417 | 0.452 | ||
1 - 5/16 (1.3125) | 1.344 | 1.317 | 2.327 | 0.438 | 0.472 | ||
1 - 3/8 (1.375) | 1.408 | 1.379 | 2.429 | 0.458 |
0.491 |
||
1 - 7/16 (1.4375) | 1.472 | 1.442 | 2.530 | 0.478 | 0.509 | ||
1 - 1/2 (1.5) | 1.534 | 1.504 | 2.627 | 0.496 | 0.526 | ||
1 - 5/8 (1.625) | 1.663 | 1.663 | 2.784 | 0.496 | 0.526 | ||
1 - 3/4 (1.75) | 1.798 | 1.758 | 2.902 | 0.526 | 0.532 | ||
1 - 7/8 (1.875) | 1.914 | 1.883 | 3.027 | 0.526 | 0.532 | ||
2 (2) | 2.039 | 2.008 | 3.156 | 0.526 | 0.532 |
![]() |
|||||||
Dimensions in inches: source ASME B18.21.1 -2009- Table 4 High Collar
|
|||||||
Nominal washer size |
A max
|
A min |
B max
|
T
mean
section thickness
(t1+t)/2
|
W min
|
||
No.4 (0.112)
|
0.120 | 0.114 | 0.173 | 0.022 | 0.022 | ||
No.5 (0.125)
|
0.133 | 0.127 | 0.202 | 0.030 | 0.030 | ||
No.6 (0.138)
|
0.148 | 0.141 | 0.216 | 0.030 | 0.030 | ||
No.8 (0.164)
|
0.174 | 0.167 | 0.267 | 0.047 | 0.042 | ||
No.10 (0.190)
|
0.2 | 0.193 | 0.294 | 0.047 | 0.042 | ||
1/4 - (0.250)
|
0.26 | 0.252 | 0.363 | 0.078 | 0.047 | ||
5/16 - (0.3125)
|
0.322 | 0.314 | 0.457 | 0.093 | 0.062 | ||
3/8 - (0.375)
|
0.385 | 0.377 | 0.55 | 0.125 | 0.076 | ||
7/16 -(0.4375)
|
0.45 | 0.44 | 0.644 | 0.140 | 0.090 | ||
1/2 - (0.5)
|
0.512 | 0.502 | 0.733 | 0.172 | 0.103 | ||
5/8 - (0.625)
|
0.641 | 0.628 | 0.917 | 0.203 | 0.125 | ||
3/4 - (0.75)
|
0.766 | 0.753 | 1.105 | 0.218 | 0.154 | ||
7/8 - (0.875)
|
0.894 | 0.878 | 1.291 | 0.234 | 0.182 | ||
1 - (1)
|
1.024
|
1.003 |
1.478
|
0.25
|
0.208
|
||
1-1/8 (1.125) | 1.153 | 1.129 | 1.663 | 0.313 | 0.236 | ||
1- 1/4 (1.25) | 1.280 | 1.254 | 1.790 | 0.313 | 0.236 | ||
1 - 3/8 (1.375) | 1.408 | 1.379 | 2.031 | 0.375 | 0.292 | ||
1 - 1/2 (1.5) | 1.534 | 1.504 |
2.159 |
0.375 | 0.292 | ||
1 - 3/4 (1.75) | 1.798 | 1.758 | 2.596 | 0.469 | 0.383 | ||
2 - (2) | 2.039 | 2.008 | 2.846 | 0.469 | 0.383 | ||
2 - 1/4 (2.5) | 2.293 | 2.262 | 3.345 | 0.508 | 0.508 | ||
2 - 1/2 (2.5) | 2.543 | 2.512 | 3.595 | 0.508 | 0.508 | ||
2 - 3/4 (2.75) | 2.793 | 2.762 | 4.095 | 0.633 | 0.633 | ||
3 - (3) | 3.043 | 3.012 | 4.035 | 0.633 | 0.633 |
Lista completa de fornecedores de Anilhas de pressão helicoidais, tamanhos em polegadas

Founded in 1969, Buora D.P.U. is a distributor certified following ISO 9001.
The company offers the complete range of high strength fasteners, ready on stock, both coarse and fine pitches with metric and inch threads.
Distributor of prestigious brands such as UNBRAKO and NORD-LOCK, for Buora D.P.U. the service always comes first, therefore there is not minimum quantity required.
Distributor of inch sized fasteners, oil and gas fasteners and turned special screws
Manufacturer of non-standard flat washers, shims and precision metal stampings, inch sizes for North America market
Biggest factory in China producing stainless steel washers.
Fat washers, spring washers, tooth lock washers and stamping parts.
Materials: 316L ,316S33,1.4462.
We offer logistics and inventory management and integrated supply chain management services covering a wide market of OEM fasteners (KanBan), MRO and Personal Protective Equipment (Vending Machine).
Manufacturer specialized in washers. Production of 200,000 washers/day.
Flat, spring, toothed, square and wave washers, etc...
Manufacturer of special cold and hot forged nuts and bolts: Metric, UNF, UNC, BSF & BSW (Whitworth) threadforms
Manufacturer specialized in all kinds of Plain Washers, Spring and wire washers, Circlips, Copper washers, Aluminum washers, Star washers, Conical star washers, Serrated washers, Conical washers, Spherical washers.