Screws, bolts and fasteners

Frequently asked questions — Fasteners & screws

• How do I choose between threaded rods and metric thread screws for a mechanical assembly?

  The choice depends mainly on your industrial mounting configuration. The Threaded rods & bolts range is designed to provide robust connections suited to tightening constraints on demanding structures. Conversely, Metric thread screws are specifically intended for precision mechanical assemblies requiring structural retention compatible with common fastener standards. The selection must also incorporate the mechanical properties defined by the ISO 898 standard for steel components.
• Which solution should be preferred for fixing components when access to the rear is impossible?

  For situations where access to the rear of the workpiece is restricted or impossible, the Rivets & inserts range is the appropriate technical solution. These components provide permanent and robust fixing points, particularly suited to industrial applications requiring high resistance to vibration. They offer a reliable alternative to conventional screw systems when an efficient mechanical connection must be created without bilateral access to the substrate.
• How can the alignment and stability of a mechanical assembly be ensured?

  To ensure the precise alignment of components and an optimal load distribution, the use of Shims is recommended. These precision components allow clearances to be adjusted and level discrepancies in mechanical mountings to be compensated for. By providing a stable seating on support structures, they prevent potential deformation and optimise the durability of the devices fixed within your installations.
• What are the criteria for selecting fasteners for a bolted assembly subject to constraints?

  The selection must be based on dimensional compatibility, mechanical strength and the specific type of application. For steel components, refer to strength classes 8.8, 10.9 or 12.9 defined by the ISO 898 standard. Also ensure compliance with dimensional standards, such as ISO 4014 or ISO 4017 for hexagon head screws, and ISO 4032 or DIN 934 for hexagon nuts, to guarantee the interchangeability of parts.
• What is the technical difference between ear clamps and wall plugs?

  These two families address distinct installation requirements. Ear clamps provide the tightening and fixing of pipes or hoses onto connection fittings, ensuring consistent sealing for pressurised fluid networks. Conversely, Wall plugs are intended for connecting and retaining components on solid or hollow structures. They secure your mechanical and structural mountings by integrating effectively within your technical supports.