Specification Brand : Metal Spacers Online BulletPoint1 : Outside diameter: 7/16"/11.11mm BulletPoint2 : Inside diameter: 5/16"/8.1mm (fits 5/16" or M8 bolts) BulletPoint3 : Length: Varies-Choose Length BulletPoint4 : Shape: Round BulletPoint5 : Material Type: T-6061 Aluminum with tumbled aluminum finish BulletPoint6 : Material: All of our unthreaded aluminum spacers and standoffs are made from quality aluminum alloy, which provides excellent strength, durability, and corrosion resistance. Heat Dissipation: Aluminum Spacers/bushings have good thermal conductivity, allowing it to efficiently dissipate heat from electronic components. BulletPoint7 : Metal Spacers Online provides a number of aluminum spacer sizes and materials for home improvement, DIY, automotive, industrial and manufacturing applications. You are sure to find the metal spacer that you need from our Amazon Store. BulletPoint8 : Many Available Sizes: Our aluminum spacers come in various diameters and lengths to accommodate different application requirements, please select the correct option from the menu that will meet your requirements. BulletPoint9 : Other Metal Spacer Options: This aluminum spacer may also be available with a black anodized finish or in high quality mild steel material, please check our Amazon Store for other options. Color : Black CompatibleGrooveDiameter : 3 millimeters ExteriorFinish : Chrome ExternallyAssignedProductIdentifier : 8425402085103 ExternallyAssignedProductIdentifier1 : 716852150731 ExternallyAssignedProductIdentifier2 : 0716852150731 ExternallyAssignedProductIdentifier3 : 00008236852097 FinishType : Alkali Resistant GpsrSafetyAttestation : 1 GradeRating : Industrial ItemName : Aluminum Spacer 7/16" OD x 5/16" ID x Choose Your Length, Round Spacer Unthreaded Standoff Bushing Plain Finish, Fits Screws Bolts 5/16" or M8 by Metal Spacers Online (1" Length, 10 Pack) ItemPackageDimensions_Height : 8.2 centimeters ItemPackageDimensions_Length : 1.2 centimeters ItemPackageDimensions_Width : 6.6 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : hardware-spacers Manufacturer : Metal Spacers Online Material : aluminum_6061 MeasurementSystem : Inch MetalType : Alloy Steel ModelNumber : 716852150731 NumberOfBoxes : 1 NumberOfItems : 10 NumberOfPieces : 300 PartNumber : AL-43-31-100-S-10 ProductDescription : Round Aluminum Spacer ProductSiteLaunchDate : 2020-12-15T20:18:45.758Z Size : 1" Length Style : Round SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 31161500