Blind fixing for structural hollow sections, tube steel and box sections where only one face is accessible. The collapsible sleeve folds back against the inside face as the bolt is tightened, creating a load-bearing connection without welding or internal access.
Supplied in bulk to distributors, importers and hardware brands worldwide, including private-label packaging in the customer's own branding. Non-standard sizes and made-to-drawing variants are produced to order, with a material test certificate on every consignment.
| Product Type | Blind expansion bolt for structural hollow sections — bolt, collar and collapsible sleeve |
| Standards | Canco standard design; bolt property class 8.8 to ISO 898-1; for sections to EN 10219 / ASTM A500 |
| Material Grades | Bolt Grade 8.8 with steel body; SS 316 (A4) version |
| Anchor Diameter Range | M8, M10, M12, M16, M20 |
| Clearance Hole Diameter | 14 mm (M8), 18 mm (M10), 20 mm (M12), 26 mm (M16), 33 mm (M20) |
| Clamping Range | 3 mm to 60 mm total clamp thickness, by body length |
| Typical Use | Steel-to-SHS connections, facade brackets, handrails and retrofit work with one-side access |
| Base Material Suitability | Square, rectangular and circular hollow sections, box sections, one-side-access steelwork |
| Finish | Zinc plated, zinc flake, hot dip galvanized; SS 316 |
| Custom Options | Countersunk or flush head, body lengths, made to drawing |
| Certification | Material Test Certificate, EN 10204 3.1 |
| Packaging | Boxed in standard counts, bulk cartons, or private label to customer specification |
