10.9 Tensile Strength . Hex Socket Button Head . Fastener Type: Machine Screw .Drive Type: Hex Socket; Head Style: Button HeadProduct Name: Button Head ScrewsColor: blackMaterial: 10.9 Alloy Steel; Thread Size: M5x8mm /0.2 inch x 0.3 inch (D*L); Thread Pitch: 0.8mm; Total Length: 10mm/0.4 inch Hex Socket Width: 3mm/0.12 inch ; Head Size: 9x2mm/0.35 inch x 0.08 inch (D*H)Weight: 92gPackage Content: 50(+/-2%)pcs x Button Head ScrewsOnly the above package content, other merchandise will not be included.Note: Light shooting and varied exhibits can cause the color of the thing in the photo a bit of different from the genuine thing. The measurement allowed error is +/- 1-3cm.