Specification Brand : Newport Fasteners BulletPoint1 : Thread: Coarse / Full Thread / Case Hardened / Black Oxide BulletPoint2 : Thread Diameter-Pitch: 7/8-9, Length: 3 inch BulletPoint3 : Coarse Thread BulletPoint4 : Black Oxide is not a protective finish and will rust if exposed to moisture. Stainless Steel material is recommended for environments with moisture Color : Black DriveSystem : External Square ExteriorFinish : Black Oxide ExternallyAssignedProductIdentifier : 8945136056632 ItemDisplayDimensions_Diameter : 0.75 inches ItemDisplayDimensions_Length : 3 inches ItemDisplayWeight : 55.25 pounds ItemName : Square Head Set Screw, Cup Point, 7/8-9 x 3", Alloy Steel Case Hardened, Black Oxide, Full Thread (Quantity: 100) Coarse Thread, 7/8 inch Square Head Bolts, Length: 3 inch ItemTypeKeyword : square-head-bolts Manufacturer : Newport Fasteners ManufacturerGrade : Grade 2 Material : Steel MeasurementSystem : Imperial MetalType1 : Stainless Steel MetalType2 : Alloy Steel PartNumber : 447286 ProductDescription : Cup point Set Screws are headless screws whch are threaded the entire length. They have an internal hexagonal drive at one end and a cup-shaped indentation at the other end. The cup point is the most popular style set screw. Designed for fast, permanent and semi-permanent location of parts on shafts with hardness differential of 10-15 Rockwell C points and where cutting in of cup edge on the shaft is acceptable. ProductSiteLaunchDate : 2018-04-26T23:36:14.982Z Size : 7/8-9 x 3 inch UnitCount : 1 UnspscCode : 31161500