Product Description Washers • Type: Sealing • Thread/Screw/Hole Size: M4 • Diameter - Inside: - • Diameter - Outside: 0.500" (12.70mm) 1/2" • Material: Stainless Steel Product Information ResourcesManufacturerAPM HexsealProduct Category WashersProduct Sub Category SeriesSEELOC Series Download Datasheet RoHS Compliant SpecificationsProduct AttributeAttribute ValueTypeSealingThread/Screw/Hole SizeM4Diameter - Inside-Diameter - Outside0.500" (12.70mm) 1/2"Thickness0.078" (1.98mm)MaterialStainless Steel Product Videos Custom Field Product Reviews