
Structural Principle
Material: Galvanized carbon steel (rust-proof, high strength), some high-end models are stainless steel.
Composition: Hex bolt + flat washer + nut + three-piece expansion sleeve (with pre-slit and tightening cone).
Principle: When tightening the nut, the bolt pulls the cone, evenly spreading the three sleeve pieces, like three hands firmly “biting” the hole wall. The force is several times stronger than that of plastic expansion tubes, and it can even lock hollow bricks.
Mainstream Specifications & Compatible Parameters
| Bolt Specifications | Matching Drill Bit Diameter | Common Total Length | Applicable Scenarios |
| M6 | 10mm | 40/50mm | Lightweight Hangers, Shelves |
| M8 | 12mm | 60/70mm | Towel Racks, Small Appliance Brackets |
| M10 | 16mm | 70/80mm | Air Conditioner Outdoor Unit Brackets, Heavy-Duty Shelves |
| M12 | 18mm | 90/100mm | Curtain Walls, Heavy Equipment Fixing |
Core Advantages
Extremely High Load-Bearing Capacity: Taking M10 as an example, the ultimate pull-out force of solid concrete can reach 25kN. Calculated with a safe load-bearing capacity factor of 3-4, it can withstand tens of kilograms of tensile force; reliable anchoring can also be achieved with hollow bricks/perforated bricks (plastic expansion tubes are basically ineffective on hollow bricks).
Widely applicable wall surfaces: Suitable for concrete, red bricks, hollow bricks, lightweight bricks, foam bricks, and marble/stone, earning it the nickname “hollow brick nemesis.”
Easy to install and remove: Simply loosen the nut to remove it; the sleeve is recyclable and reusable (unlike plastic expansion tubes, which are generally disposable).
| Product Name | 3pcs Expansion Fix Bolts |
| Material | Carbon steel, Stainless steel |
| Surface Finish | Yellow zinc, Blackened, Blue and white zinc, Bleached |
| Colour | Yellow, Black, Blue White, White |
| Standard Number | DIN/ASME/ISO/GB |
| Grade | 4.8/6.8/8.8/10.9/12.9 ; A2-70 |
| Diameter | M1.4 M1.6 M2 M2.5 M3 M4......M80 M90 M100 |
| Thread form | Coarse thread, Medium thread, Fine thread |
| Place of origin | Hebei, China |
| Brand | Muyi |
| Pack | Box+cardboard carton+pallet |
| The product can be customized | |
| 1. The products are generally carbon steel or stainless steel, and the surface of carbon steel is cold and hot galvanized and dacromet surface treatment. It is suitable for light steel keel ceiling, ventilation pipe, cable bridge, tunnel and other anchoring parts that need to be suspended. Anchors are divided into medium and light duty series and can also be specially designed and processed according to customer requirements.
2. Widely used : mainly used in heavy anchoring occasions, such as mechanical equipment anchor, elevator support anchor, curtain wall ceiling and other heavy anchoring occasions. Customers can choose bolts with various head functions according to actual needs, such as outer hexagon bolts, C-hook bolts, O-shaped eye bolts, etc |
|
| NO. | Size mm |
Hole diameter mm/inch. |
Thread size mm/inch |
Length of anchor bolt mm |
| 1 | M6 | Ф10 | M6 | 40 |
| 2 | M8 | Ф14 | M8 | 50 |
| 3 | M10 | Ф16 | M10 | 60 |
| 4 | M12 | Ф20 | M12 | 80 |
| 5 | M16 | Ф24 | M16 | 100 |
| 6 | M20 | Ф30 | M20 | 130 |
| 7 | 1/4" | Ф10 | 1/4" | 40 |
| 8 | 5/16" | Ф14 | 5/16" | 50 |
| 9 | 3/8" | Ф16 | 3/8" | 60 |
| 10 | 1/2" | Ф20 | 1/2" | 80 |
| 11 | 5/8" | Ф24 | 5/8" | 100 |
| 12 | 3/4" | Ф30 | 3/4" | 130 |