Hexagon Bolt/Nut Protection Caps are a plastic cover that conceals nuts and bolts to make them more resistant to weathering and tampering. They are designed to provide an enhanced finished appearance and the range includes black, white and grey bolt and nut protection caps. These LDPE nut and bolt protection caps are used to protect bolts and nuts in standard metric sizes (DIN 933). In addition to caps for M5 to M24 bolts, the range also includes imperial UNF bolt and nut protection caps to fit bolt sizes ¼ 7/16 ½ and ⅝. These durable bolt and nut protection caps are resistant to most chemicals and protect fasteners from harsh weather conditions.