- YongnianDistrikt Handan-Stadt, Provinz Hebei
- Nancy@mj-anchor.com
- +86 18131004569
The Duojia Sleeve Anchor with a DIN 7991 Flat Head Screw is a high-performance expansion anchor designed for securing fixtures to solid base materials like concrete, brick, and block, while achieving a completely flush, professional finish. This anchor is particularly suited for applications where a smooth, snag-free surface is required after installation. Constructed from high-grade carbon steel (available in grades 4.8, 8.8, 10.9, etc.) and finished with a protective White Zinc Plating for corrosion resistance, it is a robust and reliable choice for construction, industrial, and infrastructure projects.
This product is a sleeve anchor, a type of expansion anchor known for its versatility and strong holding power in a variety of solid materials.
The defining feature of this specific model is its screw, which conforms to the DIN 7991 standard. This specifies a Hexagon Socket Countersunk Flat Head Screw. This means the screw is driven by a hex key (Allen key), allowing for higher installation torque compared to a standard Phillips or slotted drive, resulting in a more secure fastening. The countersunk head ensures that the screw sits perfectly flush with the surface of the item being fastened.
The anchor works by expanding its sleeve to create a friction-hold against the walls of the drilled hole in the base material.
| Parameterbezeichnung | Spezifikationsbeschreibung |
|---|---|
| Produktname | Sleeve Anchor With Flat Head Screw DIN7991 |
| Markenname | Duojia |
| Herkunftsort | Hebei, China |
| Material | Kohlenstoffstahl |
| Oberflächenbehandlung | Weiß verzinkt |
| Available Sizes | M6–M20 |
| Strength Grades | 4,8, 8,8, 10,9, 12,9, A2-70, A4-70, A4-80 usw. |
| Messsystem | Metrisch |
| Anwendung | Heavy Industry, General Industry, Construction, Infrastructure |
| Certifications | ISO 9001, ISO 14001, ISO 45001, SGS |
| Packaging Options | Small Pack + Carton + Pallet; Bag/Box with Pallet |
This anchor is the ideal choice for heavy-duty fastening where a flush surface is critical for aesthetic or functional reasons.



