Specification Brand : uxcell BulletPoint1 : Material: Metal; Product Name: Set Screw; Weight: 9g BulletPoint2 : Package Content: 100(+/-2%)pcs x Set Screw; Thread Size: M3 / 0.12"(D); Drive Type: Hex Socket BulletPoint3 : Coating: Black Oxide Plated; Head Style: Socket Cap Head; Main Color: Black BulletPoint4 : Thread Pitch: 0.5mm; Total Length: 2.5mm / 0.1" BulletPoint5 : Grade: 10.9; Modle: DIN916 ExteriorFinish : Black Oxide,Metal ExternallyAssignedProductIdentifier1 : 709874914948 ExternallyAssignedProductIdentifier2 : 0709874914948 GradeRating : Grade 10 9 ItemName : uxcell DIN916 M3x2.5mm Metal Grade 10.9 Hex Socket Set Screw Bolt Fastener Black 100pcs ItemPackageDimensions_Height : 12.4 centimeters ItemPackageDimensions_Length : 0.5 centimeters ItemPackageDimensions_Width : 10.2 centimeters ItemTypeKeyword : hardware-nut-and-bolt-sets Manufacturer : uxcell ManufacturerGrade : Grade 10.9 Material : Metal ModelNumber : a16042900ux1154 NumberOfPieces : 100 PartNumber : a16042900ux1154 ProductDescription : Set Screws are often used for holding a pulley, gear, or other parts from turning relative to a shaft. Do not have an external head. Drive system is a hexagon-shaped hole.