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M27 SS202 Plain Washers – Reliable Strength and Performance for Heavy-Duty Fastening
Introduction
When it comes to industrial assembly, every component—no matter how small—must meet the standards of strength, durability, and precision. Washers, often overlooked, play a critical role in the structural integrity of fastened joints. Specifically, M27 SS202 Plain Washers are designed to optimize load distribution, resist loosening from vibration, and prevent damage to surfaces during high-torque fastening.
As industries move toward more robust and efficient operations, the demand for heavy-duty fastening solutions like M27 SS202 Plain Washers continues to rise. From infrastructure projects and large machinery to energy plants and automotive components, these washers provide consistent performance where it matters most.
Crafted from SS202 stainless steel, M27 SS202 Plain Washers offer the ideal combination of strength, corrosion resistance, and cost-efficiency. Their design supports large M27 bolts, commonly used in high-load assemblies, making them essential in industrial-grade applications.
Whether you’re building a steel framework, assembling mechanical equipment, or maintaining industrial systems, choosing the right washer makes all the difference. Our premium M27 SS202 Plain Washers not only meet but exceed expectations, delivering reliable performance and long-term value in every fastening operation.
What Are M27 SS202 Plain Washers?
M27 SS202 Plain Washers are flat, round discs with a central hole designed to accommodate M27 bolts. These washers act as a cushion between the fastener and the connected material, reducing wear, distributing pressure, and enhancing overall joint stability.
Primary Functions of M27 SS202 Plain Washers:
Load Distribution – Prevents stress concentration on surfaces and reduces risk of material deformation
Vibration Resistance – Maintains bolt tension and prevents loosening in high-movement environments
Surface Protection – Prevents scratching, galling, and material damage under bolt pressure
The construction of these washers using SS202 stainless steel ensures they offer moderate corrosion resistance, high mechanical strength, and a long operational life. The use of M27 SS202 Plain Washers is an industry best practice in applications where safety and precision cannot be compromised.
Material Details: Why SS202?
SS202 stainless steel is a member of the austenitic family of stainless steels, known for its affordability and mechanical strength. It is often chosen for applications where the operating environment is moderately corrosive but does not require marine-grade resistance.
Chemical Composition:
Chromium: 17–19%
Nickel: 4–6%
Manganese: 7.5–10%
Carbon: ≤ 0.08%
SS202 vs Other Grades:
Compared to SS304: Offers slightly lower corrosion resistance but is more cost-effective for general industrial use
Compared to SS316: Lacks the molybdenum content of SS316, making it less resistant to marine environments but perfect for semi-outdoor or dry conditions
Benefits of SS202 in Washers:
Cost-effective material without sacrificing mechanical strength
Good resistance to oxidation and light corrosion
Excellent weldability and formability
Ideal for use in machinery, construction, and light chemical environments
The combination of affordability and strength makes M27 SS202 Plain Washers a practical choice in projects that require reliability at scale.
Manufacturing and Technical Specifications
Precision and quality control are at the heart of our manufacturing process. Every batch of M27 SS202 Plain Washers undergoes strict inspection and quality checks to ensure uniformity and performance.
Manufacturing Process:
Precision CNC machining for dimension control
Deburring and surface treatment for smooth finish
Degreasing and ultrasonic cleaning
Custom packaging based on order type
Final inspection and traceable lot documentation
Technical Specifications:
| Parameter | Specification |
|---|---|
| Inner Diameter | 27.5 mm ± 0.3 mm |
| Outer Diameter | 54.0 mm ± 0.5 mm |
| Thickness | 4.0 mm ± 0.2 mm |
| Material | SS202 Stainless Steel |
| Finish | Bright, Matte, or Polished |
| Shape | Flat Circular Disc |
Each washer is built to ensure seamless integration with M27 bolts, delivering excellent load-bearing performance in large-scale industrial setups.
Key Features
M27 SS202 Plain Washers are designed for high-performance fastening in heavy-duty applications. Their combination of precise engineering, reliable material strength, and resistance to environmental stress makes them an industry favorite across multiple sectors. Let’s explore the features in detail:
1. Heavy-Duty Load Distribution
When fastening large components with M27 bolts, concentrated pressure can lead to material deformation or bolt pull-through. M27 SS202 Plain Washers help evenly distribute the load across a wider surface area, protecting the integrity of the connected materials and extending the lifespan of the joint. This is especially crucial in structural steel, concrete baseplates, and pressure-sensitive assemblies.
2. Precision Fit for M27 Bolts
Every washer is CNC-machined to ensure a precise inner diameter that fits snugly with M27 bolts. This eliminates any looseness or misalignment during assembly. A proper fit ensures optimal torque transfer, prevents shifting under load, and maintains consistent fastening pressure over time.
3. Moderate Corrosion Resistance
Crafted from SS202 stainless steel, these washers resist rust and oxidation in dry, indoor, and semi-exposed environments. They are suitable for applications where full marine-grade resistance is not required, offering a balance between cost and environmental protection. This makes M27 SS202 Plain Washers ideal for general industry, construction, energy, and heavy machinery.
4. Enhanced Surface Protection
The flat and smooth finish of these washers prevents galling or damage to the surfaces they contact. By acting as a buffer, they protect structural elements from bolt abrasion or wear—especially important in precision assemblies or painted/finished components.
5. High Dimensional Accuracy
Each washer is produced with strict tolerance control on inner diameter, outer diameter, and thickness. This dimensional uniformity ensures consistent performance, easier automation during installation, and compatibility across different fastening systems. Whether you’re using robotic arms or manual tools, you’ll get a predictable result.
6. Long-Lasting Mechanical Performance
Thanks to the strength of SS202 stainless steel, M27 SS202 Plain Washers withstand repeated stress cycles without cracking or deforming. They maintain their shape and function even under dynamic loads and mechanical vibrations, making them reliable in high-impact or rotating machinery.
7. Low Maintenance Requirements
Once installed, these washers require virtually no maintenance in most use cases. Occasional visual inspection is enough to ensure continued performance. There’s no need for repainting, coating, or chemical treatment unless exposed to highly corrosive environments.
8. Excellent Vibration Dampening
Vibration is one of the leading causes of bolt loosening and joint failure. M27 SS202 Plain Washers act as shock absorbers, minimizing the transference of vibration between fastened surfaces. This is essential for engines, transport vehicles, heavy machinery, and power equipment where constant movement or pulsing loads are present.
9. Stronger Than Mild Steel Alternatives
Compared to mild steel washers, these stainless steel washers offer significantly higher yield strength and tensile capacity. They don’t warp or crack under torque, ensuring secure fastening even at high pressure points. SS202 outperforms mild steel in structural reliability and resistance to fatigue.
10. Flexible Packaging and Customization
Whether you need bulk sacks for large-scale installations or compartmentalized boxes for assembly lines, these washers can be packed according to your project requirements. We also offer custom labeling and barcoding, making inventory management and site deployment easier and more efficient.
Applications & Use Cases
M27 SS202 Plain Washers are trusted across multiple sectors for their strength and adaptability.
Industrial Equipment
Used in compressors, pumps, motors, and turbine casings where vibration and torque are common.
Infrastructure & Construction
Ideal for fastening steel columns, trusses, and beams in bridges, flyovers, and industrial buildings.
Rail & Transit
Used in rail track assemblies, vehicle suspension systems, and structural frames where consistent fastening is critical.
Energy & Utilities
Secures structural supports in solar and wind energy installations, electrical grid equipment, and power plants.
Transportation & Heavy Vehicles
Applied in engine mounts, frame joints, and axle connections to maintain bolt tension over time.
General Manufacturing
Used in machinery foundations, heavy jigs, and custom equipment where structural integrity is non-negotiable.
OEM Fabrication
Relied on by equipment manufacturers for assembly of export-grade products where durability is key.
Why Buy M27 SS202 Plain Washers in Bulk
Bulk purchasing provides significant operational and financial advantages, particularly for OEMs, contractors, and plant engineers.
Cost Efficiency: Benefit from volume discounts and optimized logistics
Consistency: Receive standardized washers from a single batch, ensuring uniform quality
Availability: Avoid project delays due to part shortages
Custom Packaging: Choose from bulk packs, private labeling, or compartmentalized kits
Scalability: Accommodate growing production or installation needs effortlessly
Buy M27 SS202 Plain Washers in Bulk and ensure you’re always stocked for success.
Why Choose the Best M27 SS202 Washers for Industrial Use
When sourcing industrial components, your supplier matters as much as the product itself. Here’s why we are the trusted source for M27 SS202 Plain Washers:
State-of-the-Art Manufacturing – Using CNC machinery and quality testing
Material Traceability – MTCs provided with every bulk order
In-House Production – Total control over quality and lead time
Technical Support – Custom specs, CAD reviews, and load consultation
Global Supply Chain – Shipping to clients across Asia, Europe, and Africa
Choosing the Best M27 SS202 Washers for Industrial Use means working with a partner who understands your goals and exceeds your expectations.
Installation Tips
To get the best results from M27 SS202 Plain Washers, follow these professional practices:
Clean all contact surfaces before installation
Use a calibrated torque wrench to avoid overtightening
Place the washer flat between the fastener and base material
In high-vibration systems, consider dual washer configurations
Do not reuse washers that show signs of distortion
For semi-outdoor exposure, pair with compatible SS202 bolts
Maintenance Guidelines
Routine Inspection: Check during every maintenance cycle for cracks or discoloration
Storage: Keep dry and covered to prevent oxidation
Cleaning: Use mild detergent and soft cloth for cleaning
Replacement: Replace any washer showing signs of rust or wear
Case Study: Improving Fastening Reliability in a Heavy Industrial Framework
A large-scale infrastructure project involved the construction of a high-load steel framework intended to support overhead piping systems and mechanical equipment in an energy processing facility. The project demanded exceptional fastening performance due to the structural load requirements, elevated working conditions, and exposure to moderate outdoor environments.
The Challenge
During the initial construction phase, the engineering team experienced recurring issues with bolt loosening, especially in sections subject to frequent vibration and torque fluctuations. The washers initially used were generic mild steel units, which showed signs of deformation, rusting, and inadequate surface protection within a few weeks of installation.
These failures led to:
Repeated maintenance interventions
Risk of structural instability
Increased labor costs
Project timeline delays
After technical evaluation, it was evident that the existing washers lacked the tensile strength and dimensional consistency required for M27 bolts in such critical load-bearing applications.
The Solution
To overcome these challenges, the project team decided to transition to M27 SS202 Plain Washers for all primary structural joints and anchor points. The decision was based on the washer’s superior material properties, precise dimensions, and moderate corrosion resistance—suitable for the semi-outdoor environment of the project site.
Implementation included:
Supply of 15,000+ M27 SS202 Plain Washers over two phases
Batch-wise quality certification including MTCs and dimensional inspection reports
Use of matte finish washers to reduce glare and blend with structural finishes
On-site delivery in custom-labeled cartons for quick access and sorting
Technician training on correct installation and torqueing procedures
Execution
The installation of M27 SS202 Plain Washers began with a retrofit of the problem-prone sections. Once performance improvements were validated, the washers were used across all remaining sections. Each washer delivered a precise fit with the M27 bolts, improving torque retention and reducing installation time.
Regular torque checks during the following weeks showed excellent clamping force stability and no signs of washer fatigue or bolt movement. The team also reported smoother tightening operations due to the washer’s clean, burr-free surface finish.
Results
The implementation of M27 SS202 Plain Washers led to immediate and measurable improvements across multiple performance metrics.
| Performance Metric | Before (Mild Steel Washers) | After (M27 SS202 Plain Washers) |
|---|---|---|
| Bolt Retention Rate | 82% | 99.6% |
| Washer Failure Reports | High (20–25%) | Negligible (<1%) |
| Rework & Re-tightening | Weekly | Every 6 months |
| Average Installation Time | 12 minutes per joint | 8.5 minutes per joint |
| Maintenance Frequency | Bi-weekly | Quarterly |
Feedback from Project Engineers
The engineering team noted significant advantages:
Ease of Installation: Washers seated properly without misalignment
Improved Joint Performance: Torque held steady over extended periods
Long-Term Cost Savings: Reduced labor, fewer fastener replacements
Inventory Efficiency: Labeled packaging simplified field identification
They concluded that M27 SS202 Plain Washers delivered a substantial improvement in fastening quality, ultimately contributing to the timely and stable completion of the structural assembly. These washers have since been added to the project specification list for future infrastructure builds.
Related Products or Variants
SS202 Washers – Available in M6 to M36 sizing range
Stainless Steel Flat Washers – Smooth, corrosion-resistant for structural applications
Heavy-Duty Galvanized Washers – For marine and coastal installations
Customized OD/ID washers – Tailored per client drawings
Sample packs – Available for pre-approval and testing
Final Words
When strength, stability, and precision are non-negotiable, M27 SS202 Plain Washers deliver unmatched performance. Built for industrial environments, they stand strong under stress, resist corrosion, and maintain fastening integrity over time.
From infrastructure to manufacturing, your project deserves the quality and confidence that only premium washers can provide.
Choose durability. Choose engineering precision. Choose M27 SS202 Plain Washers.
Frequently Asked Questions (FAQs)
What is the main function of M27 SS202 Plain Washers?
They distribute bolt load, reduce surface damage, and resist vibration-induced loosening.
Can I reuse M27 SS202 Plain Washers?
Yes, if they are not deformed or corroded.
Are these better than galvanized washers?
For semi-corrosive and dry environments, yes. SS202 outperforms galvanized in mechanical strength.
Do you offer certification with bulk orders?
Yes, we provide ISO certifications and test reports.
What finish options are available?
Bright, matte, or polished—based on preference or application.
What’s the MOQ for bulk supply?
Typically 500 pieces, but customizable for repeat buyers.
Are these part of the SS202 Washers family?
Yes, they are a standard variant of SS202 Washers for M27 bolt sizes.
Do these qualify as Stainless Steel Flat Washers?
Yes, they are flat stainless steel washers designed for structural use.
How do I Buy M27 SS202 Plain Washers in Bulk?
Simply share your requirement via RFQ or contact form—we offer fast dispatch and volume pricing.
Can I customize inner or outer diameter?
Yes, based on drawings or technical consultation.
Do you supply globally?
Yes, we ship worldwide with complete export documentation.
Are these recommended for marine use?
No, SS316 is recommended for marine environments.
How long will they last in outdoor use?
Years, depending on exposure and environment—routine checks recommended.
Can I request samples?
Absolutely. We offer sample packs before large orders.
Are you the Best M27 SS202 Washers for Industrial Use supplier?
Our clients think so—high retention, trusted quality, global delivery.
Why Choose Nafees Metal Industries?
