Flutesan 50 Pcs Hot Dip Galvanized Wedge Anchors 3/8" x 4", Heavy Duty Concrete Anchors with Embedded Minimum Embedding Depth Mark for Cement and Concrete – Corrosion Resistant, Indoor/Outdoor Use

Features: Installation Tips 1. Always drill the hole straight and vertically to ensure proper alignment and optimal anchoring performance. 2. Before tapping the anchor into place, thread the nut to the marked position on the shank to prevent thread damage or driving the anchor too deep. 3. Due to the expansion sleeve design, these anchors are not easily removable once inserted into the base material. Please confirm the installation position before proceeding. 4. Use a drill bit that matches the exact diameter of the anchor to create a properly sized hole. An oversized hole may cause the anchor to spin during tightening, compromising its holding power. 5. You may drill the hole slightly deeper than the total length of the anchor. This allows you to tap the anchor fully into the hole if you need to remove or hide it later. Specifications: Material: hot-dip galvanized carbon steel Color: silver-gray Size: about 3/8‘‘ x 4'' Package includes: 50 x Marked Gecko Expansion Screws Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays. Pointed items are included, please be careful when using and please keep them away from kids

• Material: these wedge anchors are made of hot-dip galvanized carbon steel with a uniform, dense zinc coating; Compared to standard electro-galvanized anchor bolts for concrete, they offer far superior corrosion resistance, effectively withstanding moisture, outdoor exposure, and high-corrosion environments; These heavy-duty anchors resist loosening and seizing even after years of use, ensuring a longer service life for all your anchoring projects
• Use: designed for heavy-duty anchoring in concrete, brick, and stone, these anchor bolts for concrete are ideal for securing equipment supports, railings, shelves, curtain wall components, and more; The 50-pack size of these wedge anchors easily meets the demands of both bulk construction projects and small-to-medium installation jobs, making them a reliable choice for any professional or DIYer
• Installation Method: each anchor features a clear minimum embedment depth marking on the body, allowing you to visually confirm proper depth during installation and prevent insufficient load capacity from shallow embedment; The wedge-style expansion design of these wedge anchors ensures the sleeve expands tightly against the hole wall when the nut is tightened, creating a secure grip with no complicated extra steps required for these anchor bolts for concrete
• Important Notes: confirm the base material is solid concrete or brick before installation; Do not use in hollow or porous substrates, as this will compromise anchoring strength; :follow the embedment depth marking strictly—both insufficient and excessive depth can reduce performance; :wear protective gloves during installation to avoid injury from sharp metal edges
• Wide Application Range: suitable for cement and solid concrete; Not suitable for hollow blocks or porous base materials; Commonly used in construction installation, equipment mounting, outdoor structure assembly, and repair projects, meeting diverse anchoring needs across different working conditions