Including 880pcs in 4 sizes to meet your different needs, this fine quality stainless steel screw kit is rustproof and durable enough for a long service life. It is applicable to all kinds assembly, maintenance and repair of precision machinery, electronic products and household appliances, ideal for all kinds of workers and repairmen. Specifications: Material: Stainless Steel Color: Silver Thread Tolerance: 4H Screw Diameter: 3mm Screw Length: 100mm Package Size: Approx. 19132.1cm / 7.485.120.83in Package Weight: Approx. 514g / 18.13oz Packing List: 125 * M2 Screw Nut 85 * M3 Screw Nut 45 * M4 Screw Nut 45 * M5 Screw Nut 125 * M2 Washer 85 * M3 Washer 45 * M4 Washer 45 * M5 Washer 10 * Countersunk Head Hexagonal Screw M58mm 10 * Countersunk Head Hexagonal Screw M512mm 10 * Countersunk Head Hexagonal Screw M516mm 10 * Countersunk Head Hexagonal Screw M520mm 10 * Countersunk Head Hexagonal Screw M48mm 10 * Countersunk Head Hexagonal Screw M412mm 10 * Countersunk Head