Galvanised Metric Washers for Structural Bolting

The washer beneath a structural fastener may be small, but it still has to belong in the connection. Bremick Structural Flat Washers are galvanised metric structural washers available in M12, M16, M20, M24, M30 & M36 sizes for compatible structural bolting across Australian steel fabrication, construction, maintenance & industrial projects.

Crews putting together structural fastening assemblies can find related hardware in  Structural Fasteners & Bolts, while  Flat Washer covers washer options for broader fastening work.

Correct selection starts with the connection rather than the washer's outside diameter. Check the structural bolt size, nut, required washer type, finish & project documentation before the hardware reaches the steelwork.

What Are Structural Washers?

Look beneath the bolt head or nut in a structural connection & the washer becomes part of the working assembly rather than an afterthought.

Structural flat washers are purpose-selected washers used with compatible structural bolting. Although their basic shape resembles a general-purpose flat washer, appearance alone doesn't establish that two washers are suitable for the same job.

You may also see these washers identified by names such as:

► Structural washers
► Structural flat washers
► Galvanised structural washers
► Metric structural washers
► Structural steel washers
► Structural bolt washers
► Structural fastening washers
► M12 structural washers
► M16 structural washers
► M20 structural washers
► M24 structural washers
► M30 structural washers
► M36 structural washers

Bremick identifies this K08 family as Structural Washers Metric Galvanised. The documented nominal sizes extend from M12 through M36.

When the job also calls for related nuts & washer hardware, Nuts & Washers provides another practical purchasing path.

Why Choose Structural Washers?

Reaching into a mixed washer bin because something fits over the bolt can create the wrong component combination before tightening even begins.

A structural washer can form part of the required interface between structural fasteners & connected steelwork. Washer type, nominal size, position & finish therefore need to suit the particular assembly.

Typical requirements can arise across:

► Structural bolted connections
► Fabricated steel frames
► Steel erection
► Industrial structures
► Building frames
► Equipment support steelwork
► Structural brackets
► Gantries
► Heavy fabrication
► Construction assemblies
► Maintenance replacement

Galvanising is part of Bremick's documented description for this washer family. Where compatible galvanised structural hardware is required, consider the washer together with the bolt, nut, connected steelwork & operating environment.

Adding another washer isn't automatically a harmless adjustment. Washer quantity, type & placement should follow the requirements of the connection rather than being changed simply to solve a fit-up issue.

For larger project orders involving additional fastening components, Bolts & Fasteners covers the wider hardware range.

Common Applications

Picture a fabricated portal frame laid out for assembly: every bolt location needs the correct supporting hardware ready before the steel starts coming together.

Structural flat washers can be encountered in suitable applications such as:

► Structural steel frames
► Steel-to-steel connections
► Portal-frame construction
► Fabricated support structures
► Industrial platforms
► Equipment frames
► Gantries
► Structural brackets
► Building steelwork
► Plant maintenance
► Heavy workshop fabrication
► Compatible structural bolt assemblies

Production fabrication creates its own challenge because the same joint may appear dozens of times. Keeping bolts, nuts & structural washers correctly identified helps prevent mixed hardware from moving between repeated connections.

Steel erection places more emphasis on organisation. Once loose M16, M20 & M24 washers leave their labelled packaging, visual identification becomes less reliable & unnecessary sorting begins.

Existing plant presents a completely different buying situation. Maintenance crews may need to record washer position, condition, finish & the surrounding fastener assembly before selecting replacement hardware.

For practical background on selecting fastening components as part of a complete job, read Fastener Guide Bolts Screws Anchors.

Product Selection Guide

Treat the washer as a specified component rather than the last item grabbed before assembly.

Match The Nominal Bolt Size

The structural bolt gives you the first useful size reference.

Bremick currently documents:

An M20 structural bolting arrangement therefore starts the washer-selection process with the corresponding M20 structural washer, subject to the requirements of the complete connection.

A centre hole that slips over the bolt doesn't complete the identification. Washer type, dimensions, finish & the specified fastening arrangement should also be confirmed.

Check The Bolt, Nut & Washer Together

Three components ordered separately still have to become one compatible fastening assembly on site.

Before installation, check:

► Structural bolt type
► Nominal bolt diameter
► Compatible nut
► Required structural washer
► Washer location
► Finish compatibility
► Connection documentation
► Installation requirements

For related metric bolt requirements,  Hex Bolts provides another hardware option.

Separate Structural Flat Washers From General Flat Washers

Similar dimensions don't automatically mean two washers have the same intended use.

General flat washers serve a wide range of everyday fastening applications. Structural flat washers should be selected according to the structural fastening arrangement required for the job.

Avoid identifying replacements from:

► Centre-hole diameter alone
► Approximate outside diameter
► Visual similarity
► An unlabelled workshop container
► The assumption that every flat washer serves the same purpose

Dedicated storage makes identification considerably easier. Keeping structural washers separate from general workshop washers reduces the chance of similar-looking components becoming mixed.

Confirm The Galvanised Finish

Once steelwork moves outdoors or into industrial service, surface protection becomes part of the hardware decision.

Bremick identifies its K08 Structural Washer range as galvanised.

Consider the washer alongside:

► Structural bolt finish
► Nut finish
► Connected steelwork
► Environmental exposure
► Existing hardware
► Project requirements

Specific coating requirements deserve confirmation. If a project calls for a defined galvanising process, coating thickness or other documented finish requirement, check the current information for the exact component being supplied.

Recognise Different Washer Types

A round component beside a structural bolt isn't necessarily a conventional structural flat washer.

Structural fastening work can involve specialised washer types designed for different situations.

A taper washer may be required where a connection needs a tapered bearing surface.

A direct tension indicator washer is a specialised component associated with assessing bolt tension during installation.

These components shouldn't be treated as substitutes for one another. Use the washer type required by the particular connection.

Measure Unidentified Hardware Carefully

Loose washers rarely tell you where they came from once they've spent a few months in a maintenance drawer.

Where existing hardware needs identifying, record useful dimensions & compare them with known product information instead of estimating by eye.

 Measuring & Layout Tools can support workshop & site measurement tasks when checking components or preparing steelwork.

Structural Washer vs Standard Flat Washer

Put both on the same workbench & their shared shape can disguise the fact that they belong to different fastening decisions.

Let the connection determine which washer belongs beneath the fastener. Convenience isn't a reliable basis for replacing a specified structural component.

Bremick Structural Washer Sizes M12–M36

Clear size identification keeps a box of washers from becoming a measuring exercise every time the workshop needs another one.

M12 Structural Washer

Bremick's M12 galvanised structural washer is the smallest documented nominal size in the K08 family.

M16 Structural Washer

The M16 structural flat washer provides the corresponding nominal size for compatible M16 structural fastening arrangements.

M20 Structural Washer

For suitable M20 bolting, Bremick documents an M20 galvanised metric structural washer.

M24 Structural Washer

Larger connections can move into Bremick's M24 structural washer where that nominal size is required.

M30 Structural Washer

Heavy steel assemblies can call for an M30 galvanised structural washer when specified for the connection.

M36 Structural Washer

At the upper end of the documented K08 family, the M36 structural washer provides the corresponding option for compatible M36 structural fastening requirements.

Detailed stock labels save time during replenishment. Recording “M24 structural washer – galvanised” gives purchasing, stores & fabrication teams a clearer reference than a container marked simply “M24 washers”.

Expert Tips

Leave structural washers in labelled packaging until they're actually needed. Mixing several diameters in an open container creates avoidable identification work.

Take a photograph before dismantling an unfamiliar bolted connection. Washer position, bolt markings & the arrangement on both sides of the steel can all help when replacement components are being identified.

Inspect removed hardware rather than automatically putting it back into service. Corrosion, deformation, surface damage or coating deterioration should be considered against the maintenance requirements for the connection.

Prepare fastening hardware around the assembly where practical. Keeping compatible bolts, nuts & washers organised can reduce sorting once installation starts.

Question an unexpected extra washer instead of copying it automatically. Previous maintenance work may not necessarily reflect the original connection requirements.

Store taper washers & direct tension indicators separately from conventional structural flat washers. Different washer forms exist for different purposes.

Resolve uncertainty while the connection remains accessible. Identifying a questionable washer before tightening is easier than dismantling completed steelwork later.

For another practical look at why small fastening components deserve proper attention, read Why Good Fasteners Matter More Than the Tool You Drive Them With.

Maintenance crews dealing with heavy industrial equipment & steel assemblies can also explore Quarry Crews Crusher Maintenance.