Plain Periphery Type
Recommended where surfaces should not be marred or snagging could be a problemlw30-1
Toothed Periphery Type
Recommended to prevent shifting.
 
 lw30-2
Flat Rim Type
Recommended for electrical applications or when fastening to plastic or other special materials.lw30-3
  • Use where force and resiliency; are needed when fastening in soft of thin materials.
  • Distributes load over wide area.
  • Spans oversize or elongated holes.
  • Internal teeth lock into bolt head or nut to prevent backoff rotation.

Plain Periphery Type

Nominal
Washer Size		 Hole Dia. Min. Hole Dia. Max. Outside Dia. Min. Outside Dia. Max. Thickness Minimum
Height		 WCL Part
Number		 Cross
Reference
4 0.116 0.123 0.372 0.383 0.025 0.064 DSPP-0112-06-01 4704-06-01
6 0.142 0.15 0.372 0.383 0.02 0.055 DSPP-0138-06-01 4706-06-01
8 0.176 0.168 0.372 0.383 0.022 0.045 DSPP-0164-06-01 4708-06-01
10 0.195 0.204 0.372 0.383 0.022 0.050 DSPP-0190-06-01 4710-06-01
10 0.195 0.204 0.495 0.505 0.025 0.065 DSPP-0190-08-01 4710-08-01
10 0.195 0.204 0.618 0.632 0.025 0.070 DSPP-0190-10-01 4710-10-01
1/4 0.256 0.267 0.865 0.885 0.03 0.109 DSPP-0250-14-01 4714-14-01

Flat Rim Type

Nominal
Washer Size		 Hole Dia. Min. Hole Dia. Max. Outside Dia. Min. Outside Dia. Max. Thickness Minimum
Height		 WCL Part
Number		 Cross
Reference
4 0.12 0.124 0.265 0.275 0.022 0..047 DSFR-0112-04-01 4704-04-01
4 0.12 0.124 0.265 0.275 0.015 0.040 DSFR-0112-04-02 4704-04-02
6 0.146 0.15 0.323 0.333 0.025 0.060 DSFR-0138-05-01 4706-05-01
6 0.146 0.15 0.323 0.333 0.017 0.052 DSFR-0138-05-02 4706-05-02
6 0.146 0.15 0.372 0.383 0.029 0.070 DSFR-0138-06-02 4706-06-02
10 0.195 0.204 0.494 0.506 0.025 0.060 DSFR-0190-08-02 4710-08-02
10 0.195 0.204 0.618 0.632 0.025 0.070 DSFR-0190-10-01 4710-10-01

Toothed Periphery Type

Nominal
Washer Size		 Hole Dia. Min. Hole Dia. Max. Outside Dia. Min. Outside Dia. Max. Thickness Minimum
Height		 WCL Part
Number		 Cross
Reference
4 0.116 0.123 0.556 0.569 0.025 0.070 DSTP-0112-09-01 4804-09-01
6 0.146 0.15 0.556 0.569 0.025 0.065 DSTP-0138-09-01 4806-09-01
8 0.168 0.176 0.556 0.569 0.025 0.060 DSTP-0164-09-01 4808-09-01
10 0.195 0.204 0.556 0.569 0.029 0.070 DSTP-0190-09-01 4810-09-01
10 0.195 0.204 0.865 0.885 0.025 0.123 DSTP-0190-14-01 4810-14-01
12 0.221 0.231 0.556 0.569 0.039 0.080 DSTP-0216-09-01 4812-09-01
12 0.221 0.231 0.865 0.885 0.039 0.110 DSTP-0216-14-01 4812-14-01
1/4 0.256 0.267 0.678 0.698 0.05 0.110 DSTP-0250-11-01 4814-11-01
1/4 0.256 0.267 0.865 0.885 0.039 0.105 DSTP-0250-14-01 4814-14-01
1/4 0.288 0.293 0.865 0.885 0.062 0.140 DSTP-0250-14-02 4814-14-02
5/16 0.32 0.332 0.99 1.01 0.062 0.145 DSTP-0312-16-02 4818-16-02
3/8 0.384 0.398 0.99 1.01 0.062 0.145 DSTP-0375-16-01 4820-16-01
3/8 0.384 0.398 1.24 1.26 0.05 0.140 DSTP-0375-20-01 4820-20-01
7/16 0.448 0.463 1.17 1.19 0.062 0.160 DSTP-0437-19-01 4822-19-01
1/2 0.51 0.529 1.24 1.26 0.05 0.125 DSTP-0500-20-01 4824-20-01