High precision Hex hex drive flat socket cap bolts screws. oxide . Different size of M3 M5 screws and nuts total 460pcs in a transparent box which are commonly used size. Flat countersunk screws which can be better embedded in the installation to that the smooth. Application: Great for indoor and outdoor use, in the home and office appliance, communication equipments, ship assembly and other machinery industry. Specifications: 460-Pack Screws Nuts Assortment kit Comes in a plastic box. Package Quantity: 460 Pcs Color: Black Material: alloy steel Size: M3 M5 (Include M3 M5 Nuts) Package Contents: 30 x pcs M3 x 8 nuts 30 x pcs M3 x 12 nuts 30 x pcs M3 x 16 nuts 30 x pcs M3 x 20 nuts 100 x pcs M3 nuts 20 x pcs x 8 nuts 20 x pcs x 12 nuts 20 x pcs x 16 nuts 20 x pcs x 20 nuts 80 x pcs Nuts 10 x pcs M5 x 8 nuts 10 x pcs M5 x 12 nuts 10 x pcs M5 x 16 nuts 10 x pcs M5 x 20 nuts 40 x pcs M5 nuts Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.