High precision Hex hex drive flat head socket cap screws. oxide finish. Different size of screws and nuts 460pcs in a transparent box which are commonly used size. Flat head countersunk screws which head can be better embedded in the installation surface to that the surface . Application: Great for indoor and outdoor use, in the home and office appliance, communication equipments, assembly and other machinery industry. Specifications: 460-Pack Screws Nuts Assortment kit Comes in a plastic box. Package : 460 Pcs Color: Black Material: alloy steel Size: (Include Nuts) Package Contents: 30 x pcs x 8 nuts 30 x pcs x 12 nuts 30 x pcs x 16 nuts 30 x pcs x 20 nuts 100 x pcs 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 x 8 nuts 10 x pcs x 12 nuts 10 x pcs x 16 nuts 10 x pcs x 20 nuts 40 x pcs 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.