@qewitcofs: Self-Tapping Screw + Nylon Sleeve – Tested as a Complete Anchoring System A 7×107 self-tapping screw with a nylon expansion sleeve forms a complete anchoring system. We test it as a system – not just individual parts. How the combo works: → Nylon sleeve expands – As the screw is driven, the sleeve expands against the concrete hole wall → Self-tapping screw bites – The screw thread cuts into and grips the sleeve securely → Friction lock – Expansion pressure creates a mechanical interlock with the base material Key specifications: → Screw: 7mm diameter × 107mm length – self-tapping thread → Sleeve: Nylon material with expansion slots → Typical drill bit: 8mm → Embedment depth: minimum 35mm for structural applications Typical applications: Window frame fixing, pipe supports, cable trays, light structural anchoring in concrete. 🤖 Screw + sleeve – precision-matched and tested as a system. 👱 Expansion performance verified – every batch. #Qewitco #selftappingscrews #anchoring #fixin
