► Bremick | Metric High Tensile Washers

Heavy-Duty Support for High-Strength Bolting Bremick Metric High Tensile Flat Washers are purpose-built for demanding metric bolted connections where washer strength, bearing support & reliable load distribution matter. Designed for use with compatible high-tensile bolts & nuts, Bremick Grade 8 metric zinc washers use Grade 8 carbon steel, a zinc-plated...

Heavy-Duty Support for High-Strength Bolting

Bremick Metric High Tensile Flat Washers are purpose-built for demanding metric bolted connections where washer strength, bearing support & reliable load distribution matter.

Designed for use with compatible high-tensile bolts & nuts, Bremick Grade 8 metric zinc washers use Grade 8 carbon steel, a zinc-plated finish & a hardened flat-round profile suited to heavy-duty fastening applications.

Bremick specifies its Grade 8 metric zinc washers for use with high-tensile fasteners including Class 8.8 & Class 10.9 metric bolts. The current technical sheet also states compliance with ASTM F436/F436M:2024.

For complete high-strength assemblies, Bolts & Fasteners provides a practical pathway into compatible threaded fastening components.

What Are Metric High Tensile Flat Washers?

Metric high tensile flat washers are hardened bearing washers designed to sit beneath compatible high-strength bolt heads or nuts, spreading clamping force across a broader surface while resisting deformation under demanding loads.

Their job is not to lock the fastener.

Their primary functions are:

► Distribute clamping load
► Provide a controlled bearing su
► Support high-strength bolted assemblies
► Reduce concentrated contact beneath bolt heads or nuts
► Help protect suitable joint surfaces
► Maintain a robust interface under higher fastening loads
► Support consistent seating during tightening

Bremick identifies the Grade 8 zinc product as Carbon Steel
Grade 8 – Type 1 with a Rockwell hardness range of HRC 38–45.

For standard general-purpose applications where high-tensile washer performance is not specified, Flat Washers provides the correct adjacent category.

Why High Tensile Washer Strength Matters

High-strength bolts can create substantial clamping force.

If the washer beneath the bolt head or nut is too soft for the assembly, it can deform under bearing pressure.

That can compromise the interface between the fastener & connected material.

A correctly specified high-tensile washer helps provide a stronger bearing component within the bolted joint.

This becomes particularly important where trades are working with:

► Class 8.8 bolts
► Class 10.9 bolts
► Heavy fabricated steel
► Machinery mounting points
► High-load brackets
► Equipment frames
► Industrial supports
► Structural steelwork
► Heavy mechanical assemblies

Washer strength should match the fastening system rather than being treated as an interchangeable accessory.

Where high-load joints also require compatible nut selection, Nuts & Washers provides access to related fastening hardware.

Common Applications for Bremick High Tensile Washers

Metric high tensile washers suit heavy-duty bolted joints where robust bearing support is required.

Common trade applications can include:

► Structural steel fabrication
► Machinery assembly
► Heavy equipment installation
► Industrial maintenance
► Plant equipment
► Agricultural machinery
► Trailer fabrication
► Heavy brackets
► Machinery bases
► Steel frames
► Material-handling equipment
► Mechanical repairs
► Construction equipment
► Workshop fabrication
► Maintenance shutdowns
► High-strength bolted connections

The washer still needs to suit the actual bolt diameter, joint geometry, bearing surface, preload requirement, finish & engineering specification.

For heavier construction fastening, Structural Fasteners & Bolts provides a natural supporting category.

Product Selection Guide – Match the Washer to the Complete Joint

Do not select a high tensile washer from bolt diameter alone.

A better selection process checks:

► Bolt diameter
► Bolt property class
|► Nut specification
► Washer grade
► Washer inside diameter
► Washer outside diameter
► Washer thickness
► Bearing surface
► Joint material
► Finish
► Environmental exposure
► Tightening method
► Project specification

Start With the Bolt

Bremick specifically identifies its Grade 8 metric zinc washer for use with high-tensile bolts such as Class 8.8 & Class 10.9 metric bolts.

That relationship is more important than simply choosing a washer that physically slides over the thread.

Confirm the Nominal Washer Size

Nominal washer size corresponds to the intended metric fastener diameter.

Bremick’s current Grade 8 metric technical sheet provides dimensional data from M12 through M64.

Check Actual Dimensions

Inside diameter, outside diameter & thickness vary by nominal size.

These dimensions affect:

► Bolt clearance
► Available bearing area
► Joint clearance
► Seating
► Washer rigidity
► Fit around surrounding components

Always use the required specification rather than assuming all
washers with the same nominal description share identical dimensions.

Bremick Grade 8 Metric Zinc Washer Sizes

Bremick’s current Grade 8 metric zinc technical sheet lists dimensional data across:

► M12
► M14
► M16
► M20
► M22
► M24
► M27
► M30
► M36
► M42
► M48
► M56
► M64

The listed maximum outside diameters extend from 27.0 mm at M12 through to 118.0 mm at M64, while thickness ranges increase across the larger washer sizes.

These dimensions reinforce an important trade principle:

nominal bolt size identifies the starting point, but actual washer dimensions determine how the component fits within the joint.

Grade 8 Washers With Class 8.8 & Class 10.9 Bolts

Bremick’s current technical sheet makes the intended relationship clear: its Grade 8 metric washers are designed for heavy-duty applications requiring high tensile strength & are intended for use with high-tensile bolts plus nuts, including Class 8.8 & Class 10.9 metric bolts.

This gives buyers a cleaner selection pathway.

When a bolted connection specifies a high-strength fastener system, washer grade deserves the same attention as the bolt plus nut.

A complete fastening decision should consider:

bolt class + nut specification + washer grade + dimensions + finish + preload + environment

For broader fastener-selection guidance, the Fastener Guide: Bolts, Screws & Anchors provides additional trade context.

High Tensile Washers vs Standard Flat Washers

High tensile flat washers & standard flat washers may look similar at a glance but their intended duties can differ significantly.

Standard Flat Washers

Standard washers suit general fastening applications where their material, hardness plus dimensions meet the joint requirement.

High Tensile Flat Washers

High tensile washers are selected where the assembly demands a stronger bearing component beneath compatible higher-strength fasteners.

That distinction matters because a standard washer may deform under loading outside its intended capability.

Do not substitute based on appearance alone.

If the connection specifies a Grade 8 or equivalent high-strength washer, use the specified washer class.

Why Washer Hardness Matters

Hardness helps the washer resist permanent deformation beneath clamping load.

Bremick specifies a Rockwell hardness range of HRC 38–45 for the current Grade 8 metric zinc washer.

That mechanical property supports its intended role in demanding fastening applications.

A harder washer can provide a more stable bearing surface beneath suitable high-strength fasteners.

However, washer hardness is only one part of the joint.

Correct performance still depends on:

► Proper fastener selection
► Correct joint design
|► Compatible materials
► Correct tightening method
► Adequate bearing area
► Suitable surface condition
► Engineering requirements

Zinc Plated Finish – Know the Exposure Limit

Bremick specifies the Grade 8 metric zinc washer with a zinc-plated finish.

Its current technical data describes this coating as providing a low level of corrosion protection with use recommended for dry internal applications. Bremick also states that the zinc plating complies with AS1789.

This exposure guidance should influence selection.

Before installing zinc-plated high tensile washers, consider:

► Internal or external location
► Moisture
► Condensation
► Chemical exposure
► Connected materials
► Bolt finish
► Nut finish
► Required service life
► Project specification

A high-strength washer with the wrong corrosion-protection
system is still the wrong washer for the environment.

Plain vs Zinc High Tensile Washers

Bremick’s high-tensile flat-round category includes both Metric Plain & Metric Zinc product families.

Metric Zinc

Use where the zinc-plated specification suits the connection plus environmental exposure.

Metric Plain

Plain high-tensile washers may suit fastening systems where the specified finish treatment or assembly requirement differs.

Do not choose between plain plus zinc purely on appearance.

Finish needs to align with:

► Mating fastener finish
► Corrosion environment
► Protective coating system
► Installation location
► Project requirements

This protects the category from being treated as a generic
washer selection page while keeping the focus on high
strength metric bolting.

Load Distribution Beneath High-Strength Fasteners

The flat washer increases the effective bearing area beneath the fastener.

This can be particularly valuable where concentrated contact from a bolt head or nut could place excessive local pressure onto the connected surface.

Typical situations can include:

► Steel brackets
► Slotted connections
► Machinery feet
► Equipment mounts
► Fabricated frames
► Base plates
► Heavy supports
► Maintenance replacement joints

The washer should sit flat against the joint surface.
Debris, burrs, paint build-up or damaged seating surfaces can interfere with consistent bearing.

For fabrication work where joint surfaces need accurate preparation, Fabrication Tools & Workholding can support the surrounding workshop process.

Washer Dimensions – ID, OD & Thickness Explained

Three dimensions matter when specifying a flat round washer.

Inside Diameter – ID

The inside diameter provides clearance around the mating fastener.

It must suit the specified nominal bolt size.

Outside Diameter – OD

The outside diameter determines how widely the washer spreads bearing force.

Available clearance around the joint also matters.

Thickness

Thickness contributes to washer stiffness plus resistance to deformation.

Bremick’s current technical data shows thickness increasing across larger nominal sizes, with listed ranges varying by diameter.

These dimensions should be checked where:

► Space is restricted
► Holes are slotted
► Edge clearance is limited
► High preload is applied
► Existing machinery is being repaired
► Exact replacement dimensions matter

Expert Tips for High Tensile Washer Installation

► Match the fastener class. Select the washer around the complete high-strength bolting system.
► Confirm nominal size. Avoid choosing from visual diameter
alone.
► Check ID, OD plus thickness. Exact dimensions can matter in tight or engineered joints.
► Inspect the bearing surface. The washer should sit flat against the connected material.
► Keep mating surfaces clean. Debris beneath the washer can affect seating.
► Do not use visibly distorted washers. Permanent deformation can indicate prior overload or unsuitable reuse.
► Check corrosion exposure. Bremick specifies the zinc-plated Grade 8 product for dry internal use.
► Use the specified tightening method. Washer strength does not replace correct torque or tensioning procedure.
► Avoid uncontrolled substitutions. Similar-looking washers can differ in hardness, dimensions plus performance.
► Check engineering documentation. Structural, safety-critical plus high-load joints can require exact fastener specifications.

The accuracy of tightening equipment also matters across high-strength assemblies. Industrial Shed’s Tool & Equipment Care provides a relevant support pathway for frequently used workshop equipment.

Common High Tensile Washer Selection Mistakes

High-strength connections deserve more care than simply assembling whatever components fit.

Common mistakes include:

► Using a standard washer where a high-tensile washer is specified
► Matching bolt diameter but ignoring washer grade
► Ignoring outside diameter
► Ignoring washer thickness
► Using zinc-plated washers in unsuitable exposure
► Mixing incompatible finishes
► Installing over burrs or debris
► Reusing heavily deformed washers
► Assuming every high-tensile washer uses identical dimensions
► Ignoring the specified bolt plus nut class
► Treating washer selection as cosmetic

The safest selection process is specification-led.

If one component in the bolted system changes, reassess the complete joint rather than assuming the remaining hardware remains suitable.

Stock High Tensile Washers by Fastener System

Workshop organisation should make it difficult to confuse high-tensile washers with general-purpose stock.

Separate washers by:

► Nominal metric size
► Grade
► Finish
► Outside diameter where required
► Thickness where required
► Matching bolt class
► Typical application
► Reorder quantity

This becomes especially valuable for machinery workshops,
fabrication operations plus maintenance teams handling
multiple metric high-strength bolt sizes.

Clear storage also helps prevent an ordinary washer being substituted during a rushed repair.

For businesses managing repeat workshop consumption, Industrial Shed’s On-Site & Workshop Services provides support for recurring stock requirements.

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Why Buy Bremick Metric High Tensile Washers From Industrial Shed?

Industrial Shed gives Australian fabricators, mechanical trades, maintenance teams plus construction businesses access to purpose-specific fastening components for demanding workshop plus site requirements.

Bremick Grade 8 metric washers are designed for heavy-duty applications requiring high tensile strength plus reliable performance, with compatibility identified for high-tensile fasteners such as Class 8.8 plus Class 10.9 metric bolts.

Select every washer around the complete connection:

► Bolt size
► Bolt class
► Nut specification
► Washer grade
► ID
► OD
► Thickness
► Finish
► Bearing surface
► Environment
► Tightening requirement

✔ Choose Bremick Metric High Tensile Washers for hardened bearing support, controlled load distribution & dependable high-strength metric fastening.

Support the load. Match the fastener. Build the joint right.

Frequently Asked Questions

A metric high tensile washer is a hardened flat bearing washer designed for compatible high-strength metric bolted connections requiring robust load distribution plus resistance to deformation.

Bremick specifies the current metric zinc product as Carbon Steel Grade 8 – Type 1.

Bremick specifically identifies its Grade 8 metric washers for use with high-tensile fasteners such as Class 8.8 plus Class 10.9 metric bolts.

No. They can differ in material strength, hardness, dimensional specification plus intended fastening duty.

Their primary purpose is bearing support plus load distribution. Use the locking method specified for the joint where resistance to loosening is required.

Bremick describes the zinc-plated finish as low corrosion protection plus recommends it for dry internal applications.

Confirm nominal bolt size, bolt class, washer grade, ID, OD, thickness, finish, bearing surface, exposure plus joint specification.

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