Catalog number: WVL-0840TC Features: ●The bolt and washer are connected by a ratchet system, so they are resistant to vibrations, and the back side (the side being fastened) of the included washer has a protrusion that bites into the object being fastened, providing a high level of anti-loosening effect. Applications: ●For fastening where a bolt alone is required to prevent loosening. Specifications: ●Dimensions (mm) d: M8 ●Dimensions (mm) L: 40 ●Thread pitch (mm): 1.25 ●Thread length (mm): 40 ●Strength category: 4 to 4.8T ●Head diameter (mm): 13 ●Head thickness (mm): 9.8 ●Hexagonal hole diagonal dimension (mm): 6 ●Hexagonal hole depth (mm): 4.0 ●Thread diameter (mm): 8 ●Neck length (mm): 40 ●Ratchet mechanism bolt with spike washer Material/Finish: ●Steel ●Surface treatment: Trivalent chromate finish
