340Pcs Flange Self Tapping Screws Bolt Cross Head Black Assorted Set with Case Features: . All screw are standard metric coarse pitch. Not rust under the damp environment,strong anti-oxidation ability,corrosion resistance. This is one of a series of kits in colour coded compartment boxes that are designed to stack. They are very strong, do not allow components to move around compartments in transit and close very securely. Specification: Color: Black Head type: Flat round head Groove type: Cross Mode of action: Self-attack Surface treatment: Oxidized black Material Grade: Carbon Steel Q235                  Parameter                Type  Amount No.4 x 3/8" (2.9mm x 9.5mm) 60Pcs No.6 x 1/2" (3.5mm x 13mm) 60Pcs No.6 x 5/8" (3.5mm x 16mm) 50Pcs No.6 x 1" ( 3.5mm x 25mm) 30Pcs No8 x 3/8" (4.0 x 9.5mm ) 30Pcs No.8 x 1/2" (4.0mm x 13mm) 40Pcs No.8 x 5/8" (4.0mm x 16mm) 30Pcs No.10 x 1/2" (4.8 x 13mm)  40Pcs Package Included: 340 x Screws (with the case) Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures.