External Type
Recommended to provide maximum tortorsional resistance.lw31-1
Internal Type
Recommended where appearance or possible snagging are important considerations.lw31-2
  • Use with large diameter screw and bolt heads when extreme torques are not required.
  • Spans oversized and elongated holes.

External Type

Nominal
Washer
Size		 Hole Dia. Min. Hole Dia. Max. Rim
Width		 Outside Dia. Min. Outside Dia. Max. Thickness WCL Part
Number		 Cross
Reference
6 0.142 0.15 0.05 0.37 0.381 0.022 EXT-0135-01-00 1106-01
8 0.168 0.176 0.093 0.494 0.506 0.02 EXT0164-05-00 1108-05
10 0.195 0.204 0.079 0.494 0.506 0.025 EXT0190-07-00 1110-07
1/4 0.256 0.267 0.196 0.882 0.898 0.045 EXT0250-04-00 1114-04
1/4 0.256 0.267 0.121 0.68 0.695 0.039 EXT0250-09-00 1114-09
1/4 0.256 0.267 0.196 0.882 0.898 0.039 EXT0250-16-00 1114-16
5/16 0.32 0.332 0.089 0.68 0.695 0.035 EXT0312-02-00 1118-02
3/8 0.384 0.398 0.13 0.882 0.898 0.039 EXT0375-06-00 1120-06
3/8 0.384 0.398 0.281 1.24 1.26 0.035 EXT0375-09-00 1120-09
1/2 0.512 0.529 0.307 1.38 1.41 0.055 EXT0500-01-00 1124-01
1-1/4 1.269 1.293 0.158 2.172 2.202 0.062 EXT1250-01-00 1140-01
5853 1.56 1.58 0.148 2.359 2.392 0.094 EXT1562-01-00 1145-01

Internal Type

Nominal
Washer
Size		 Hole Dia. Min. Hole Dia. Max. Rim
Width		 Outside Dia. Min. Outside Dia. Max. Thickness WCL Part
Number		 Cross
Reference
6 0.142 0.15 0.044 0.307 0.317 0.025 INT-0138-06-00 1206-06
8 0.168 0.176 0.12 0.494 0.506 0.017 INT-0164-08-00 1208-08
10 0.195 0.204 0.087 0.495 0.505 0.025 INT-0190-01-00 1210-01
10 0.195 0.204 0.186 0.743 0.758 0.02 INT-0190-10-00 1210-10
1/4 0.256 0.267 0.213 0.806 0.818 0.025 INT-0250-07-00 1214-07
1/4 0.256 0.267 0.12 0.618 0.632 0.025 INT-0250-09-00 1214-09
5/16 0.32 0.332 0.137 0.74 0.76 0.045 INT-0312-05-00 1218-05
3/8 0.384 0.398 0.28 1.147 1.166 0.035 INT-0375-06-00 1220-06
2 2.01 2.03 0.219 2.865 2.9 0.062 INT-2000-01-00 1252-01