... spike, dog spike,sharp-end spike and s hex head screw spike(screw spike)A: B:Elastic bar ... , gauge plate, nylon yarn, rubber foot.2 Standard componentsA: Hex bolt, square bolt, steel structure bolt, ... , square nut, hex flange nut, slotted nut, high strength nut for bolt. 3 Fastener Spring washer, ... , etc. Standards for standard components: GB, DIN, ASTM/ANSI, BS, JIS, etc. Package : packed in the knited ...