<p>Lock Washer, External Tooth, Phosphorus Bronze, Finish Plain, Fits Bolt Sizes 1/2 In., Inside Dia. 0.530 In., Outside Dia. 0.900 In., Thickness 0.045 In., Thickness Tolerance 0.037-0.045 In., Color Bronze, Rockwell Hardness B90, Absorbs Shock and Vibration, For Use With Large Round, Pan, or Binding Head Screws, Meets/Exceeds ANSI B18.22.1., Refills -, Package Quantity 25</p> <p><br /><b>Features</b></p> <ul> <li>Application: Absorbs Shock and Vibration</li> <li>Color: Bronze</li> <li>Finish: Plain</li> <li>Inside Dia.: 0.530&quot;</li> <li>Item: Lock Washer</li> <li>Material: Phosphorus Bronze</li> <li>Outside Dia.: 0.900&quot;</li> <li>Type: External Tooth</li> <li>Fits Bolt Sizes: 1/2&quot;</li> <li>Thickness: 0.045&quot;</li> <li>Meets/Exceeds: ASME B18.21.1</li> <li>Rockwell Hardness: B90</li> <li>Thickness Tolerance: 0.037-0.045&quot;</li> </ul> <p></p>