Specification: Size M3 M4 M5 M6 M8 M10 Color:Silver- 244PCS Material:Stainless Steel Fastener Type:Hex, Bolt 1. Flat hex head screws bolts nuts gasket washers assortment kit is made of 304 stainless steel material, not rust, anti-moisture, anti - oxidation, corrosion resistant, acid/alkali resistance, high hardness. 2. The nuts and bolts assortment kit includes13 most common sizes, such as M3x20mm,M4x20mm,M5x20mm,M6x20mm,M6x30mm,M6x40mm,M6x60mm,M8x20mm, M8x25mm, M8x40mm, M8x60mm, M10x40mm, M10x60mm total 244 pieces. 3. M3, M4, M5, M6, M8, M10 nuts and bolts kit have uniform force, are located in the center of the head without deviation, and are not easy to slip. Uniform pitch, obvious thread, no residual burr, fixed thread can obtain good holding effect. 4.Practical and convenient of packing box, All of screws and nuts are packed in a durable and sturdy box, this box can be use for a storage box. 5.Door handle, faucet, light fixture, knobs, locks and toys, plumber and other small repairs around the shop, garage or home; and all kinds of precision machinery, classified instruments, electronic products, household appliances, communication products. Package including: Bolts: M3*20 - 4pcs, M4*20 - 4pcs M5*20- 4pcs, M6*20- 6pcs M6*30 - 6pcs, M6*40 - 6pcs M6*60 - 6pcs, M8*20- 3pcs M8*25 - 2pcs, M8*40 - 6pcs M8*60- 6pcs, M10*40 - 4pcs M10*60 - 4pcs Nuts: M3 - 4pcs, M4 - 4pcs M5.4pcs, M6- 24pcs M8- 17pcs, M10- 8pcs Lock Washers: M3 - 4pcs, M4 - 4pcs M5 - 4pcs, M6 - 24pcs M8- 17pcs, M10- 8pcs Flat Washers: M3 - 4pcs, M4 - 4pcs M5 - 4pcs, M6- 24pcs M8- 17pcs, M10 - 8pcs