A useful assortment of hex and head metric bolts are included in the Amtech 240 piece nuts and bolt and comes in a handy plastic storage case. Manufactured with 4.8 grade tensile steel and chemically blackened for increased corrosion resistance. Contents include: 10 piece M4 x 0.7mm 20mm bolts 10 piece M4 x 0.7mm 12mm bolts 20 x M4 nuts 20 x M4 spring washers 10 piece M5 x 0.8mm 25mm bolts 10 piece M5 x 1.0mm 16mm bolts 20 x M5 nuts 20 x M5 spring washers 10 piece M6 x 1.0mm 20mm bolts 10 piece M6 x 1.0mm 30mm bolts  20 x M6 nuts 20 x M6 spring washers 5 piece M8 x 1,25mm 25mm bolts 5 piece M8 x 1.25mm 40mm bolts 10 x M8 nuts 10 x M8 spring washers 5 piece M10 x 1.5mm 16mm bolts 5 piece M10 x 1.5mm 40mm bolts 10 x M10 nuts 10 x M10 spring washers Suitable for a wide range of DIY uses around the home and garage.