TRUSCO Hard Lock Nut, Hot Dip Zinc Plated, M20 x 2.5, 2 Pieces, B659-0020, 1 PK

Catalog number: B659-0020 Features: ●Provides a nearly perfect anti-loosening effect with almost no screw rotation. ●Can be completely fixed even at the middle position of the male thread. ●Can be used repeatedly. ●Prevents bolt breakage and extends the life of the fastener itself. ●Ideal for fastening dissimilar materials that generate vibration (wood, plastic, etc.). Applications: ● Places where micro vibrations occur continuously, where large loads occur repeatedly, where temperature changes are large (high temperature, low temperature) (gas turbines, etc.), where external forces are repeatedly applied in the bolt axial direction, perpendicular to the bolt axial direction, or around the bolt axial direction, where maintenance is not possible once fastened, and where there are dangerous locations where maintenance cannot be performed by humans ( Specifications: ● Nominal diameter: M20 x 2.50 ● Two-sided width dimension (mm): 30 ● Height (mm): 26.7 ● Nut type: Anti-loosening nut ● Dimension (mm) B: 30.0 ● Dimension (mm) D: 34.6 ● Dimension (mm) e: 34.6 ● Dimension (mm) l: 26.7 ● Dimension (mm) m: 26.7 ● Dimension (mm) s: 30.0 ● Package: Bolt-on pack (blister) Material/Finish: ● Steel (equivalent to SS404) ● Surface treatment: Hot-dip galvanized finish