| 摘要 |
PURPOSE:To prevent the generation of rust by moisture or the like infiltrating into a cap little by little in a rustproof attaching instrument attaching a cap to fastening tools such as bolts and nuts and preventing the generation of rust. CONSTITUTION:This instrument is provided with a cap 14 of a primary metal to be attached to a nut 10 and a bolt 12 and a rustproofing material 16 of a secondary metal having an ionization tendency higher than that of the primary metal and to be inserted into the cap 14. As an example, the shape of the rustproofing material 16 is formed into a filiform one and the primary metal is formed of iron or an alloy contg. iron as well as the secondary metal is formed of zinc or an alloy contg. zinc. |
