Expansion Bolt, 304 stainless steel, silver tone, sleeve anchor with hex nut. Key benefits - Durable and corrosion resistant for long service life in concrete or masonry - Secure expansion mechanism with hex nut for reliable hold - Compatible with standard installation methods using a drill and hex wrench - Solid construction suited for heavy or permanent fixtures Specifications - Type: Hex Nut, Sleeve Anchor - Thread Diameter (d): 8 mm / 5/16 in - Total Length (L): 80 mm / 3 in - Sleeve Length (L1): 58 mm / 2.3 in - Sleeve Diameter (D): 10 mm / 0.4 in - Drill Punch Diameter (d1): 10 mm / 0.4 in - Material: 304 Stainless Steel - Color: Silver Tone Use scenarios - Mount a wall shelf to a concrete wall for sturdy, load-bearing storage - Secure a metal bracket or support to a concrete floor or base - Fix electrical conduit or equipment brackets to masonry walls for organized installations Notes - Requires a 10 mm drill bit for hole preparation - Designed for anchoring into solid concrete or masonry substrates with a sleeve expansion mechanism