Plain Periphery
Recommended to prevent surface marring.lw29-2
Toothed Periphery Type
Recommended to prevent shifting.lw29-3
  • Use where force and rigidity are required when fastening in soft or thin material.
  • Distributes load over wide area.
  • Spans oversized or elongated holes.
  • Internal teeth lock into bolt head or nut to prevent backoff.

 

Plain Periphery Type

Nominal
Washer Size
Hole Dia. Min. Hole Dia. Max. Outside Dia. Min. Outside Dia. Max. Thickness Height WCL Part
Number
Cross
Reference
10 0.192 0.204 0.991 1.009 0.04 .135 DMPP-0190-16-01 4510-16-01
1/4 0.256 0.267 1.115 1.135 0.039 .155 DMPP-0250-18-01 4514-18-01
5/16 0.32 0.332 0.991 1.009 0.05 .195 DMPP-0312-16-01 4518-16-01
5/16 0.32 0.332 1.24 1.26 0.05 .190 DMPP-0312-20-01 4518-20-01
3/8 0.384 0.398 1.365 1.385 0.062 .235 DMPP-0375-22-01 4520-22-01

Toothed Periphery Type

Nominal
Washer Size
Hole Dia. Min. Hole Dia. Max. Outside Dia. Min. Outside Dia. Max. Thickness Height WCL Part
Number
Cross
Reference
10 0.196 0.2 0.991 1.009 0.05 .162 DMTP-0190-16-01 4610-16-01
10 0.196 0.2 0.991 1.009 0.029 .141 DMTP-0190-16-02 4610-16-02
1/4 0.256 0.267 1.115 1.135 0.04 .175 DMTP-0250-18-01 4614-18-01
3/8 0.384 0.398 1.365 1.385 0.062 .240 DMTP-0375-22-01 4620-22-01
3/8 0.38 0.39 1.595 1.625 0.078 .305 DMTP-0375-26-01 4620-26-01
1/2 0.512 0.529 1.595 1.625 0.078 .300 DMTP-0500-26-01 4624-26-01
5/8 0.64 0.659 1.86 1.89 0.078 .315 DMTP-0625-30-01 4628-30-01