When it comes to high-strength bolted joints, the washer you choose is just as important as the bolt itself.
HV Vickers hardened washers are specifically designed for structural applications where load, durability and long-term performance really matter.
At Leyton Fasteners, we supply HV washers that meet the demands of modern construction, steelwork and engineering projects – where cutting corners simply isn’t an option.
140-200HV washers are usually used with Grade 8.8 bolts & Grade 8 nuts, 300HV washers are usually used with Grade 10.9 or 12.9 bolts & Grade 10 or 12 nuts.
What is a HV Vickers Hardened Washer?
HV washers are high-strength structural washers, typically used alongside higher grade bolts and nuts. The term Vickers hardened refers to the Vickers hardness test, which is used to measure the washer’s resistance to deformation under load.
In simple terms:
These washers are engineered to stay flat, strong and reliable, even under extreme clamping forces.
Unlike standard washers, HV washers are heat-treated to achieve a specific hardness range, ensuring they do not compress, crack or fail once installed.
Why Washer Hardness is so important
In structural bolting, the washer plays a critical role in:
- Distributing load evenly across the joint
- Preventing surface damage to steel plates
- Maintaining bolt preload over time
- Reducing the rick of joint relaxation or failure
If a washer is too soft, it can deform under torque. The deformation leads to loss of clamp force, which compromises the integrity of the entire joint.
That’s why higher HV graded washers are specified for safety-critical applications.
Typical Applications for HV Washers
HV washers are commonly used in:
- Structural steel connections
- Bridges and civil engineering projects
- Commercial and industrial buildings
- Heavy plant and machinery
- Wind, rail and infrastructure projects
Anywhere bolt assemblies are specified, HV washers are not optional—they’re essential.
Standards and Compliance
HV washers are manufactured to meet recognised structural standards, ensuring compatibility with high grade bolt systems and confidence on site.
At Leyton Fasteners, our HV Vickers hardened washers are supplied with full traceability and certification is available on request, giving contractors and engineers peace of mind that the product meets the required specifications.
Choosing the Right HV Washer
When selecting HV washers, it’s important to consider:
- Correct washer size for the bolt diameter
- Required hardness range
- Surface finish and corrosion protection
- Compliance with project specifications
Our team is always happy to help you choose the right washer for your application—especially where structural safety and compliance are critical.
Why Buy HV Washers from Leyton Fasteners?
We understand that in construction and engineering, reliability matters more than anything. That’s why we focus on:
- Consistent quality and tested products
- Stock availability for fast turnaround
- Technical knowledge you can use
- Honest advice, not guesswork
Whether you’re sourcing a bolting assembly or replacing individual components, Leyton Fasteners is here to support your project from start to finish
Need HV Vickers Hardened Washers?
Call 0151 355 8045 or email sales@leytonfasteners.co.uk
