A sleeve anchor, also known as an expansion anchor, is a type of mechanical fastener used to secure objects to concrete, brick, or other masonry materials. It works by expanding within a pre-drilled hole to create a secure hold.
The Yellow Zinc Plating Sleeve Anchor Bolt with L-Washer is a versatile mechanical fastener from Donghuang, designed for light to medium-duty fastening in construction, renovation, and machinery installation. Made of high-grade Carbon Steel and coated with a protective Yellow Zinc Plating, this anchor stands out for its integrated L-Washer—a component that distributes pressure evenly over fixtures, preventing indentation or damage. It is ideal for securing objects like handrails, light fixtures, and electrical boxes to concrete, brick, or block substrates, and excels in through-fastening applications (where the bolt passes directly through the item being attached).
This anchor is a go-to choice for indoor projects (e.g., kitchen shelving, bathroom towel racks) and covered outdoor areas (such as porch lights, garden fences). It also supports industrial uses, like securing small machinery parts in factories. Thanks to its compliance with DIN, ANSI, and GB standards, it is compatible with projects across Europe, North America, and Asia, making it a favorite for global contractors.
The anchor features a cylindrical main body with a precision-machined expansion sleeve, a hexagonal bolt head (for easy tool grip), and a built-in L-Washer—the product’s key differentiator. The L-Washer is made from the same Carbon Steel as the bolt, ensuring it matches the anchor’s strength, and undergoes the same Yellow Zinc Plating process for uniform corrosion resistance. The washer’s flat, wide surface area ensures it sits securely against fixtures, while the expansion sleeve is designed to expand evenly inside pre-drilled holes, maximizing grip on base materials.
Available in lengths from 18mm to 400mm, the anchor accommodates installation depths for small to medium fixtures. It supports common diameters like M6, M8, M10, M12, and M16 (with customized diameters available upon request). Packaging follows a Box+Carton+Pallet format: each anchor is wrapped in a protective PE bag (to prevent scratches), grouped into sturdy boxes, and stacked on pallets for safe shipping. Every package is marked with the Donghuang logo and product specifications for easy inventory management.
| Application | Machinery, Building |
| Finish | Color-Zinc Plated |
| Material | Carbon Steel |
| Standard | DIN, ANSI, GB |
| Length | 18mm-400mm |
| Trade Term | Fob, EXW, CIF |
| Delivery Time | 20-25 Days |
| Sample | Free |
| Connection | Common Bolt |
| Trademark | Donghuang |
| Transport Package | Box+Carton+Pallet |
| Origin | China |
| HS Code | 7318190000 |
Unlike anchors limited to concrete, this product works seamlessly with concrete, brick, and block—eliminating the need to stock multiple fastener types for one project. This versatility saves time, reduces inventory costs, and simplifies installation for contractors.
The anchor comes fully pre-assembled (sleeve, bolt, and L-Washer included), so no additional parts are needed. Installation takes just three steps: drill a hole matching the anchor’s diameter, insert the anchor (tap lightly with a hammer if needed), and tighten the nut.
A unique benefit is its removability (in most cases). Unlike permanent anchors that damage substrates when removed, this product can be unscrewed and reused or replaced—perfect for temporary fixtures (e.g., construction site signage) or projects requiring adjustments (like office renovations).
As a cost-effective anchoring solution, it offers reliable holding power for light to medium loads without the premium price of heavy-duty anchors. The L-Washer enhances value by extending fixture life (via pressure distribution), reducing the need for repairs or replacements.
Donghuang prioritizes quality at every step: raw Carbon Steel is tested for tensile strength, the Yellow Zinc Plating is checked for thickness and uniformity, and the L-Washer is inspected for pressure resistance (to ensure it doesn’t deform). Finished products undergo 100% quality inspection—including load tests and corrosion resistance checks—to meet customer specs and international standards.
We offer free samples to let customers test the anchor’s performance (e.g., installation ease, holding power) before placing mass orders. Our sales team also provides detailed technical documents (e.g., installation guides, material certificates) to support project planning.
Our product range includes expansion screws, fasteners, hardware parts, plastic components, stamping parts, zinc die castings, and non-standard parts (e.g., customized anchor bolts with unique washers or finishes). We can also develop bespoke solutions for special project needs.
The Yellow Zinc Plating version works best for indoor or covered outdoor areas. For fully exposed outdoor environments (e.g., garden decks, poolside fixtures), we recommend our stainless steel variant— it offers enhanced corrosion resistance against rain, salt, and UV rays.
The L-Washer is permanently attached to the bolt during production (via precision welding), so it won’t detach during installation or use. It is also tested alongside the anchor to ensure compatibility—we verify that it can withstand the same load forces as the bolt itself.
