<p>Lock Washer, Internal Tooth, Open Perimeter, A2 Stainless Steel, Fits Bolt Sizes M12, Inside Dia. 13mm, Outside Dia. 20.5mm, Thickness 1mm, Meets/Exceeds D6797J, Package Quantity 25</p> <p><br /><b>Features</b></p> <ul> <li>Inside Dia.: 13.0mm</li> <li>Item: Lock Washer</li> <li>Material: A2 Stainless Steel</li> <li>Outside Dia.: 20.5mm</li> <li>Type: Internal Tooth, Open Perimeter</li> <li>Fits Bolt Sizes: M12</li> <li>Thickness: 1mm</li> <li>Meets/Exceeds: D6797J</li> </ul> <p></p>