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 : 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. BulletPoint3 : Made from 1215 lead-free steel with proprietary black oxide finish for increased holding power and corrosion resistance. BulletPoint4 : Hardware tests beyond ANSI standards for maximum torque capabilities BulletPoint5 : Ruland rigid couplings are carefully made from select North American bar stock in our Marlborough, Massachusetts factory and are RoHS3 and REACH compliant ExternallyAssignedProductIdentifier1 : 634529001882 ExternallyAssignedProductIdentifier2 : 0634529001882 ExternallyAssignedProductIdentifier3 : 00634529001882 ItemName : Ruland CLC-31-31-F 1215 Lead-Free Steel Rigid Coupling, One Piece with Keyway, 1.938" x 1.938" Bores, 3 3/8" OD, 1/2" x 1/2" Keyway, 4 7/8" Length ItemPackageDimensions_Height : 4.3 inches ItemPackageDimensions_Length : 5.3 inches ItemPackageDimensions_Width : 4.3 inches ItemPackageQuantity : 1 ItemTypeKeyword : beam-couplings Manufacturer : Ruland Manufacturing Co., Inc. Material : 1215 Lead-Free Steel ModelNumber : CLC-31-31-F NumberOfItems : 1 PartNumber : CLC-31-31-F ProductSiteLaunchDate : 2015-10-06T08:00:01.000Z Size : 1.938" x 1.938" Bores StreetDate : 2017-03-12T00:00:01Z UnspscCode : 31161500