Help Keep Fastened Joints Secure

A fastener that keeps working loose can turn a straightforward repair into repeat maintenance. Securefix Bolt Lock Washer Kits provide locking washers for compatible bolted assemblies where resisting unwanted loosening is an important part of keeping the connection together.

Covering both metric & imperial fastener sizes, the Securefix range suits workshops, maintenance teams, fabricators & equipment owners dealing with different machinery & fastening systems. Current metric options include M6, M8, M10, M12 & M20, alongside imperial sizes from 1/4" through to 1-1/4".

Getting the size right starts with the bolt already in the joint. Identify the measurement system, match the washer to the compatible fastener & inspect the surrounding hardware before putting the assembly back into service.

► Metric & imperial sizes available
► Made for compatible bolted fastening assemblies
► Useful where unwanted fastener loosening is a concern
► Practical for machinery, equipment & workshop repairs
► Multiple sizes for mixed maintenance requirements

What Are Securefix Bolt Lock Washers?

Bolted joints face more than tightening force once equipment starts moving. Vibration, repeated operating cycles & movement through an assembly can all place demands on fastening hardware.

Bolt lock washers are components used with compatible threaded fasteners where the joint arrangement calls for additional resistance to unwanted loosening. They form one part of the connection alongside the bolt, nut or threaded mounting point & any other specified hardware.

Size compatibility matters because a locking washer needs to suit the fastener it surrounds. Something that merely slides over the bolt isn't necessarily the correct component for the assembly.

Building a new connection rather than repairing an old one? Compare Hex Bolts when selecting the surrounding threaded hardware.

Why Choose Securefix Bolt Lock Washers?

The troublesome fastener isn't usually the one sitting quietly on the workbench—it's the one operating inside moving equipment. Once a machine, vehicle or fabricated assembly returns to service, repeated movement can expose weaknesses that weren't obvious during installation.

Having multiple Securefix sizes available makes it easier to match locking hardware to the actual fastener instead of adapting whatever happens to be in the drawer. That's particularly useful for maintenance environments where different equipment may use completely different fastening systems.

Metric & imperial identification deserves attention before the joint goes back together. Similar-looking sizes can sit surprisingly close beside one another, yet the correct choice should be based on the fastener rather than appearance.

If the surrounding threaded hardware also needs attention, browse Bolts & Fasteners rather than replacing the washer while ignoring a worn or unsuitable fastener.

Common Applications

Where should you pay closer attention to locking hardware? Look at assemblies where movement, vibration or repeated operation can challenge the fastened joint.

Machinery Maintenance

A machine can contain dozens or hundreds of fasteners, but only a few may require attention during a particular service.

When locking hardware is removed, keep track of where it came from. Returning the correct components to their intended positions helps avoid turning reassembly into guesswork.

Automotive & Mechanical Repairs

Workshop repairs often uncover previous fixes that don't quite match the original hardware.

Vehicles, trailers & mechanical equipment can contain metric, imperial or mixed fastening systems depending on the equipment involved. Identify what's actually fitted before ordering replacement lock washers.

See the realities of day-to-day workshop work in A Day With An Automotive Mechanic Peninsula.

Fabrication & Equipment Assembly

New fabrication gives you the chance to plan the fastening arrangement before final assembly.

Where the design calls for locking washers, identify the correct fastener system & diameter early so bolts, nuts & washers arrive at the bench as a compatible set.

Workshop Repairs

One missing washer can be enough to leave an otherwise straightforward repair unfinished.

Workshops maintaining equipment from different manufacturers can benefit from keeping frequently used metric & imperial sizes separated, labelled & easy to identify.

For complementary fastening components around the joint, browse Nuts & Washers.

Construction & Site Equipment

Site equipment regularly experiences transport, movement, dirt & demanding operating conditions.

When servicing these assemblies, follow the equipment requirements rather than adding or removing locking hardware based solely on what appears to fit.

Replacement Fastening

Finding a loose bolt should trigger a question: why did it move?

Check the washer, bolt, threads, nut or mounting point & adjoining components before reassembly. A replacement lock washer may form part of the repair, but damaged hardware or another underlying issue shouldn't be overlooked.

Where the joint design calls for a locking nut rather than relying on the washer arrangement alone, compare Lock Nut options suited to compatible fastening applications.

Product Selection Guide

Before comparing packets on the shelf, identify the fastener in front of you. The right measurement system & diameter narrow the choice quickly.

Metric or Imperial?

Start by determining whether the assembly uses metric or imperial hardware.

Current Securefix metric sizes include:

► M6
► M8
► M10
► M12
► M20

Imperial sizes currently represented include:

► 1/4"
► 5/16"
► 3/8"
► 7/16"
► 1/2"
► 9/16"
► 5/8"
► 3/4"
► 7/8"
► 1"
► 1-1/4"

That spread gives workshops options for servicing equipment built around different fastening systems without treating a near-match as an exact match.

Match the Washer to the Fastener

“It fits over the bolt” is only the first check.

Confirm the fastener diameter & choose the corresponding lock washer for the intended assembly. If identification isn't obvious, measure the hardware rather than relying on appearance.

Look at the Complete Fastening Stack

A locking washer is only one component in the joint.

Before rebuilding the connection, inspect:

► Bolt diameter & thread system
► Nut or threaded mounting point
► Other washers in the assembly
► Mating surfaces
► Thread condition
► Signs of movement or wear
► Required tightening procedure
► Manufacturer or project requirements

Need a conventional bearing washer elsewhere in the fastening arrangement? Browse Flat Washer.

Understand the Difference Between Washer Types

Similar shape doesn't mean identical purpose.

Flat washers, spring washers & other locking components can perform different roles within an assembly. Match the component to the fastening arrangement instead of assuming one washer type can replace another.

A Spring Washer is another distinct fastening option worth comparing when that style is called for in the assembly.

Replacing Hardware From an Existing Assembly?

Take a quick photo before dismantling a complicated connection.

That simple reference can show which components sat under the bolt head, which washers belonged at each location & how the fastening arrangement was originally assembled.

For a wider look at choosing bolts, screws & anchors around different jobs, read Fastener Guide Bolts Screws Anchors.

Expert Tips

A loose fastener is evidence, not just an inconvenience. Before replacing the washer & reaching for a spanner, look for clues that explain why the connection needs attention.

Inspect the Threads

Damaged threads can undermine an otherwise careful repair.

Run your attention over the bolt, nut or threaded hole for obvious deformation, corrosion, wear or damage. Fresh locking hardware won't restore a fastener that's no longer serviceable.

Separate Metric & Imperial Workshop Stock

Near-matches become much harder to make when the parts are organised before the repair begins.

Keep metric & imperial washers in separate labelled locations then divide frequently used stock by size. Clear storage saves measuring time & reduces accidental substitutions.

Check the Mating Components

Movement around the joint may leave marks beyond the fastener itself.

Look for enlarged holes, damaged surfaces, distortion or other evidence that something has shifted. Fixing only the visible loose bolt can miss a larger problem elsewhere in the assembly.

Choose a Tool That Properly Engages the Fastener

Rounded bolt heads make future maintenance unnecessarily difficult.

Use a correctly sized tool that engages the fastener properly rather than forcing an approximate fit. Browse Wrenches for workshop fastening & adjustment tools.

Follow the Required Assembly Procedure

Locking hardware doesn't replace correct tightening.

Where equipment documentation, manufacturer instructions or project requirements specify an assembly or tightening procedure, follow that information. Safety-critical & engineered connections deserve particular care.

Inspect Nearby Fasteners While Access Is Open

One connection showing movement can be a useful prompt to look around the surrounding assembly.

Fasteners exposed to similar conditions may warrant inspection while guards, covers or equipment components are already removed.

Small fastening components rarely attract much attention until something starts moving. Why Good Fasteners Matter More Than the Tool You Drive Them With looks at why the hardware inside the connection deserves careful selection too.