Through Hardened Steel Washers
High-Performance Through Hardened Steel Washers from Stephens Gaskets
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Bespoke Manufacturing
Instant Quote Service
Worldwide Delivery
Various Gauges/Thicknesses
Bespoke Manufacturing
Instant Quote Service
Worldwide Delivery
Various Gauges/Thicknesses
With decades of experience supporting sectors that require absolute reliability, Stephens Gaskets is your go-to through hardened steel washers supplier.
What Are Through Hardened Steel Washers?
Through hardened steel washers are flat, circular components designed to spread the load of a bolt or fastener evenly across a surface. Unlike case-hardened washers, which are only hardened on the surface, these washers are heat-treated throughout their entire thickness.
Why Choose Through Hardened Over Standard Washers?
- Hardness through the core: Ensures lasting strength, not just surface-level toughness.
- High load resistance: Maintains joint integrity under dynamic stress.
- Enhanced wear resistance: Minimises deformation and loss of clamping force.
- Dimensional stability: Holds its shape in critical applications.
- Long-term durability: Fewer replacements, reduced maintenance costs.
Benefits of Through Hardened Steel Washers
1. Superior Strength and Durability
The entire washer is hardened, giving it the mechanical strength to resist cracking, warping, or deformation under extreme load.
2. Improved Load Distribution
Even pressure across fasteners helps prevent wear, bolt pull-through, and connection fatigue.
3. Resistance to Wear and Fatigue
Suitable for high-torque, high-cycle applications. Maintains clamping force and performance over time.
4. Reliable Tension Retention
Avoids washer embedding under bolt heads, ensuring joint integrity even in harsh environments.
5. Dimensional Accuracy
Manufactured to precise tolerances for consistent fit, preload, and fastening performance.
6. Long-Term Cost Efficiency
Reduces need for replacement or retightening. Lower maintenance and downtime mean better value.
Applications of Through Hardened Steel Washers
Through hardened steel washers are trusted across industries where strength and resilience are non-negotiable:
Material Grades for Through Hardened Washers
We offer a range of steel grades for specific use cases:
| Material Type | Common Grades | Best For |
|---|---|---|
| High Carbon | C45, 1050, 1075 | General machinery, automotive assemblies |
| Alloy Steel | EN19, 4140, 4340 | Aerospace, mining, structural fastening |
| Boron Steel | 15B21, 10B38 | Agriculture, Construction |
| Spring Steel | EN42, EN45 | High-vibration environments |
| Stainless Steel | 410, 420, 17-4 PH | Marine, food-grade, and corrosion zones |
Available Standards and Sizes
We manufacture to British, European, and international standards including:
- DIN 125
- DIN 6916
- BS 4320
- ISO 7089, ISO 7090
You can specify thickness, inner and outer diameters, surface finish, and tolerance class.
Addressing Buyer Concerns
We understand that specifying high-performance washers involves more than just picking a part number. Here’s how we help solve common buyer pain points:
| Concern | Our Response |
|---|---|
| Higher cost than standard washers | We focus on lifecycle value, reduced downtime, and long-term reliability. |
| Brittleness in poorly made parts | All our washers are properly tempered and quality-checked in-house. |
| Limited customisation | We offer pre-hardened machining and wide standard size availability. |
| Corrosion in harsh environments | Protective coatings and stainless options are available |
| Unclear specification requirements | Our team provides technical support and specification matching. |
Why Choose Stephens Gaskets?
As a trusted through hardened steel washers company, we offer:
- Over 70 years of UK manufacturing experience.
- ISO 9001-certified processes and in-house heat treatment.
- Custom-built solutions with full certification.
- Short lead times and reliable nationwide delivery.
- Transparent pricing and dedicated technical support.
We don’t just supply washers. We deliver peace of mind for safety-critical applications.
FAQs About Through Hardened Steel Washers
What's the difference between through hardened and case hardened washers?
Are through hardened steel washers corrosion-resistant?
Can you supply washers for high-strength bolts?
Do you offer certification?
What are typical lead times?
What coatings are available?
Can I order custom sizes or finishes?
Yes. We offer pre-treatment machining to ensure your exact specifications are met before hardening. Speak with our technical team for tailored options.
Contact Stephens Gaskets Today