... any kinds of products to offer your need. anchoring for elevator Standards: DIN ,ANSI/ASME, BS, GB, JIS, Non-standardMaterial: Carbon ... mechanical property of Grade 4.8 and 8.8.4. Elevator guide rail bolt and big hexagon bolt for steel structure ... , spring washers, mechanical bolts, tapping screws, fiberboard screws and hexagonal wood screws, etc. We can also process non-standard fasteners according ...