Brick strength
LabSolid clay brick of at least 10 N/mm²
SiteIndian standard bricks range from class 3.5 to 35 N/mm² (IS 1077). Local kiln bricks are often near the bottom of that range.
Every published anchor load was measured in a test material, in a lab, with a perfect installation. Your wall was built on your site. A site test is the only way to know how an anchor performs in it. Pair that test with a well-made generic anchor and the savings usually pay for the test.
Anchor makers publish carefully measured loads, and they are good numbers. Each one is valid for a stated base material, a stated installation and stated distances. Out of those conditions, the number does not carry across, and the data sheets say so themselves.
LabSolid clay brick of at least 10 N/mm²
SiteIndian standard bricks range from class 3.5 to 35 N/mm² (IS 1077). Local kiln bricks are often near the bottom of that range.
LabA specific hollow block, tested shape by shape
SiteFly-ash bricks and many local hollow blocks have no published data at all. Every block shape behaves differently.
LabAnchor set in the centre of a solid brick
SiteOn a plastered wall you can't see whether a hole lands in a brick, a joint or a void.
LabConcrete of a known grade, such as C20/25
SiteOld slabs, honeycombing and unknown mixes. The grade is often a guess.
LabRight bit, right depth, hole cleaned exactly as instructed
SiteWorn bits, hammer mode in hollow block, dusty holes. Makers state that hole cleaning has a significant effect on mortar bond.
LabFull edge distance, spacing and wall thickness
Site4½-inch partition walls, holes near openings and slab edges.
For base materials outside its tables, a frame anchor data sheet says the data "can be determined by job-site testing".
Plastic frame anchor technical data sheet, leading manufacturer, India edition 2018An injection mortar sheet says its masonry loads hold only for the exact same hollow unit tested, and otherwise calls for on-site tests.
Injection mortar technical data sheet, masonry section; tests to ETAG 029 Annex BA concrete screw anchor sheet allows masonry only in the centre of solid bricks, never in joints, and recommends on-site testing.
Screw anchor technical data sheet, masonry section, India edition 2018The UK code of practice calls for site tests where no manufacturer's data exists for the specific base material. Where the anchor has a European approval and the wall meets its criteria, it does not.
BS 8539:2012, as set out in the Construction Fixings Association guidance note (2012)A hydraulic rig pulls on an anchor installed in your wall and reads the load. There is an established method for this: the UK code BS 8539 and its site-testing guidance. We have not found an Indian code dedicated to anchors, so we follow that method. There are two kinds of test.
| Anchors | 5, installed only for the test and never used on the job |
| Test load | 3 × working load for metal and other anchors. 5 × for nylon plugs, because plastic creeps under sustained load |
| Pass | All 5 hold. The working load is then confirmed as the allowable load in this wall |
| Fail | Go up a size, go deeper or change the type, then test again |
| Anchors | At least 2.5 % of those installed, and at least 3 in each area with a different wall, team or anchor |
| Test load | 1.5 × working load (1.25 × if more than 5 % are tested) |
| Pass | Holds the load with no movement and no damage to anchor or wall |
| Fail | One fails: test 5 %, at least 6, in that area. More than one: test every anchor and review the specification |
A pull test shows that this anchor held this load in this wall on the day. It does not show:
So railings, anything people hang from, heavy overhead loads, overhead fixings into anything but concrete, ceiling fans and AC units still go to a structural engineer. The advisor says so and does not pick an anchor for them.
For common jobs, the guide lists the anchor types that suit and the factors that decide between them. It explains where each type wins, then leaves the choice to you. The ratings below compare types against each other for that job. They are not loads, and the site test still confirms the one you pick.
Sustained load, pulling out at the top fixings because the tray sits away from the wall. Brick strength usually unknown, wall plastered.
| Type | Weak or unknown brick | Near edges | Long-term load | Forgiving install | Speed | Cost |
|---|---|---|---|---|---|---|
| Injection anchor (rod in mortar) | Good | Good | Fair | Poor | Slow | Higher |
| Nylon frame anchor | Fair | Fair | Poor | Good | Fast | Low |
| Metal sleeve anchor | Poor | Poor | Good | Fair | Fast | Medium |
Threaded-rod hangers for ducts, pipes or a false ceiling. Load pulls straight down. The underside of a slab is often cracked concrete, so look for anchors approved for cracked concrete.
| Type | Cracked concrete | Setting check | Fire | Removable | Speed | Cost |
|---|---|---|---|---|---|---|
| Screw anchor with rod head | Good | Good | Good | Yes | Fast | Medium |
| Drop-in anchor | Check | Poor | Good | No | Fast | Low |
| Wedge anchor with coupler | Good | Fair | Good | No | Medium | Medium |
Wall cabinets loaded with crockery: a sustained load that pulls out at the top fixings. AAC is light and soft, so drill without hammer action.
| Type | Grip in AAC | Long-term load | Forgiving install | Speed | Cost |
|---|---|---|---|---|---|
| Injection anchor with mesh sleeve | Good | Fair | Poor | Slow | Higher |
| Helical metal AAC anchor | Good | Good | Good | Fast | Medium |
| Long nylon frame anchor | Fair | Poor | Good | Fast | Low |
Draft entries for review. Each rating will cite its source before launch.
Today, buying a brand is how contractors and architects protect themselves against claims. We replace that with evidence from the actual wall: a test certificate signed by someone who doesn't sell the anchor.
A short chat, on WhatsApp or on this page. What are you fixing, how heavy, into what wall.
The advisor works out the load on each anchor and suggests a generic type and size.
It sets the test loads and the number of anchors to test, from that working load.
We arrange an independent tester with a calibrated rig for the preliminary and proof tests.
You get a signed certificate naming the wall, the anchor batch, the loads and the result. We supply the tested anchors.
The anchor options for your job, with the reasons, from the application guide and your site conditions.
Preliminary and proof tests on your site, run and signed by an independent tester.
The anchor you choose, from the tested batch, with the batch number on every box.
Mumbai and the MMR now. Delhi NCR through a partner.
We supply anchors, so we don't sign their tests. A certificate signed by the seller is worth little when there is a claim. The tester we arrange works separately from us, uses equipment with current calibration, and has an engineer sign the report.
A test proves the anchors from one batch. Every box carries its batch number, the certificate records it, and the supplier keeps a lab test report for the product.
On a single TV mount it doesn't. On a project with hundreds of anchors, the price gap between a branded and a generic anchor can cover the testing. Put in your own quotes.
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The advisor asks one easy question at a time and reads your answers back before it suggests anything. It will run on WhatsApp and on this page.
Next, you will be able to upload a fixing detail or bracket drawing. The advisor reads the hole pattern, how far the load sticks out and the bracket size, then asks you to confirm each value. Nothing read from a drawing is used until you have confirmed it.
Where the anchor you buy has a European Technical Assessment, the advisor uses that product's published values. An assessment covers one maker's product, not a generic type. Where there is none, or your wall isn't covered, the site test decides.
Example conversation. Not live yet.