Specification Brand : GRAINGER APPROVED BulletPoint : Price For: Each Basic Material: Brass Fastener Finish: Plain System of Measurement: Inch Fastener Thread Type: UNC Nut Style: Coupling Nut Fastener Thread Direction: Right Hand Item: Coupling Nut Width Across Flats: 1/2" Dia./Thread Size: 3/8"-16 Length: 1-1/8" Country of Origin (subject to change): United States BulletPoint1 : Couplings are widely used in blowers, 3D printers, DIY robots, CNC machine tools, stepper motors, etc. Similar to rigid clamp couplings, shaft couplings are used to secure bearings and sprockets tightly to shafts and are used in motor and transmission components. Suitable for model cars, model ships, hardware, mechanical drive occasions, etc. BulletPoint2 : Connection Bore Diameter: 3mm to 3mm; Screw Thread Size: M3*0.5; Total Length: 25mm /0.98-inch; Outside Diameter: 10mm/0.39-inch; Material: Aluminum Alloy; In the package of: 1 Set x Rigid Coupling (Include 8pcs Coupling + 32pcs Screws + 2pcs Wrench) BulletPoint3 : Made of high-strength aluminum alloy, integrated structure, maintenance-free, oil-proof and corrosion-resistant. Top-tight rigid coupling, high torque, high rigidity, low inertia and excellent sensitivity. There is no rotation gap, and the elastic effect can compensate for the symmetrical angle misalignment. BulletPoint4 : Single piece set screw clamp design makes it easy to set up the items on the shaft and control the holding capacity of the coupling. BulletPoint5 : The rigid type basically does not allow eccentricity and must be fully adjusted during use. Please allow slight errors due to manual measurement. Color : Silver ConnectorType : Coupling DriveSystem : External Hex ExteriorFinish : Plain,Brass ExternallyAssignedProductIdentifier : 8066500549595 ExternallyAssignedProductIdentifier1 : 0044761785387 ExternallyAssignedProductIdentifier2 : 044761785387 FinishType : Brass GpsrSafetyAttestation : 1 GradeRating : industrial ItemName : 3/8"-16 Dia. x 1-1/8" L x 1/2" W Brass Plain Finish Coupling Nut, 5 pk. ItemPackageDimensions_Height : 0.59 inches ItemPackageDimensions_Length : 3.54 inches ItemPackageDimensions_Width : 2.36 inches ItemPackageQuantity : 1 ItemTypeKeyword : coupling-nuts Manufacturer : GRAINGER APPROVED Material : Brass Material1 : Aluminum Material2 : Brass MeasurementSystem : Inch MetalType : Brass MetalType1 : Aluminum MetalType2 : Brass ModelNumber : BI743W NumberOfItems : 8 NumberOfLithiumIonCells : 1 NumberOfPieces : 10 NumberOfPieces1 : 2 NumberOfPieces2 : 4 PackageLevel : unit PartNumber : 250015BG ProductDescription : 'Coupling Nut, Nut Style Coupling Nut, System of Measurement Inch, Basic Material Brass, Fastener Finish Plain, Fastener Thread Direction Right Hand, Dia./Thread Size 3/8 In.-16, Length 1-1/8 In., Fastener Thread Type UNC, Width Across Flats 1/2 In., Package Quantity 5' ProductSiteLaunchDate : 2014-11-01T12:00:00.000-08:00 Size : 1.5 inches StreetDate : 2011-09-26T00:00:01Z Style : Hex Nut, Hex Finish Nut, HDG Nut, Galvanized Hex Nut SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 31161700