Lag Shields (Lag Screw Anchors) are used primarily for providing a flush, internally threaded fixing point in concrete so the bolt — and the fixture with it — can be removed and replaced without disturbing the anchor. This page lists the industries and assemblies where they are specified, the selection criteria that matter for each application, installation practice, and the cases where a different fastener type is the correct choice. Parts are supplied to Trade series (zamak lag shield). Stocked across roughly 6 to 10, they cover general to heavy-duty work.
Typical Applications for Lag Shields (Lag Screw Anchors)
The most common settings where these are specified:
- Fit-out & drylining: fixing to plasterboard, block and hollow wall where there is no solid backing.
- General machine building: fastening covers, brackets, motors and sub-assemblies on production equipment.
- Maintenance & repair (MRO): a stocked size for servicing existing plant where the original fastener spec must be matched.
- Fabrication & metalwork: bench and on-site assembly of steel frames, enclosures and weldments.
- Structural fixing to concrete: base plates, brackets, rails and steelwork bolted to a concrete slab or wall.
How to Specify Lag Shields (Lag Screw Anchors) for Your Application
- Size: Match the nominal size to the mating thread or hole. This product spans 6–10; check the full table below for the exact dimensions of each size.
- Material: Choose the material and finish for the service environment — plated steel for general use, stainless for corrosion resistance.
- Environment: For damp, coastal or chemical exposure prefer A4/316 stainless or a suitable coating; indoors, plated steel or A2 is usually sufficient.
- Standard: This is a trade-series article rather than one covered by a published dimensional standard, so dimensions can differ between manufacturers. Quote the dimensions you need — or the part you are replacing — rather than a standard number.
Where Lag Shields (Lag Screw Anchors) Are Not the Right Choice
Match the fastener to the load, environment and whether the joint must be reopened; the wrong class or style is the usual cause of joint failure.
Custom manufacturing · Made to drawing
Need a lag shields (lag screw anchors) outside the standard range?
A non-standard anchor & concrete fixing is quoted from the drawing; where one already exists in the catalog, the special is usually a variation on its tooling. Made by hot forging or thread rolling.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
