Specification Brand : Ruland BulletPoint1 : Precision honed bores for superior fit and torque transmission. Does not mar the shaft. Keyways are used for additional torque transmission capabilities and to prevent slippage on the shaft. BulletPoint2 : Two-piece styles have opposing hardware for a balanced design. BulletPoint3 : Proprietary Nypatch anti-vibration hardware prevents galling, maintains high holding power, and allows for multiple screw insertions. Nypatch significantly reduces installation time as no additional screw treatment is needed prior to use. BulletPoint4 : Made from 1215 lead-free steel with proprietary black oxide finish for increased holding power and corrosion resistance. Machined to a fine burr free finish. BulletPoint5 : Hardware exceeds ANSI standards for maximum torque capabilities. Ruland rigid couplings are carefully made from select North American bar stock in our Marlborough, Massachusetts factory and are RoHS3 and REACH compliant. ExternallyAssignedProductIdentifier1 : 634529022412 ExternallyAssignedProductIdentifier2 : 0634529022412 ExternallyAssignedProductIdentifier3 : 00634529022412 IncludedComponents : Product & Instructions Guide ItemName : Ruland SPC-16-12-F Two-Piece Clamping Rigid Coupling with Keyway, Black Oxide Steel, 1" Bore A Diameter, 3/4" Bore B Diameter, 1-3/4" OD, 3" Length, 1/4" x 3/16" Keyway Width ItemPackageDimensions_Height : 4.826 centimeters ItemPackageDimensions_Length : 8.128 centimeters ItemPackageDimensions_Width : 5.08 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : beam-couplings Manufacturer : Ruland Manufacturing Material : Black Oxide Steel ModelNumber : SPC-16-12-F NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : SPC-16-12-F ProductDescription : 'Rigid Shaft Coupling, Two Piece Clamp Type, With Keyway, Bore Dia 1 x 3/4 In, Overall Length 3 In, Outside Dia 1 3/4 In, Clearance Dia 2.049 In, Screw Size 1/4-28 In, Keyway Width 1/4 x 3/16 In, Max Torque 4000 In-Lb, Black Oxide Steel' ProductSiteLaunchDate : 2011-10-28T15:50:12.288Z Size : 3/4 inches Style : Modern SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1