M27 Mild Steel Plain Washers – Best MS Flat Washers for Reliable Fastening

M27 Mild Steel Plain Washers are critical elements in fastening systems, engineered to provide balanced load distribution beneath nuts and bolt heads. Their primary function is to safeguard the contact surface from damage due to high clamping forces, reduce the risk of loosening caused by vibration, and extend the life of the joint. Built to withstand the demands of industrial environments, these washers are especially suited for 27 mm bolts, commonly used in structural and heavy-duty assemblies.

Manufactured from high-quality mild steel, these plain washers offer a well-rounded combination of strength, ductility, and affordability. Their inherent toughness makes them ideal for applications where reliable performance and structural integrity are non-negotiable. Additionally, when used in protected or painted environments, they exhibit excellent resistance to wear and moderate corrosion—making them a practical choice for cost-effective engineering without compromising quality.

At Nafees Metal Industries, we take pride in being a trusted name in the Indian fastener manufacturing industry. With a focus on consistency, precision, and customer satisfaction, we produce M27 Mild Steel Plain Washers that comply with both national and international standards. Our washers are tailored to meet exact dimensional specifications, including proper inner and outer diameters, uniform thickness, and smooth surface finish, ensuring compatibility with a wide range of bolts and assemblies.

Whether you’re working in construction, automotive assembly, electrical installations, heavy engineering, or equipment manufacturing, our M27 washers deliver the reliability your projects demand. Our manufacturing process involves high-tonnage power press machines, multiple quality checks, and flexible customization options to serve both domestic and global clients. This, combined with our Mumbai-based in-house facilities and timely delivery system, makes us one of the best M27 MS Flat Washer manufacturers in India.

From small batch orders to high-volume industrial supply, Nafees Metal Industries offers a one-stop solution for premium-grade plain washers built to deliver enduring performance in every fastening application.

Specifications of M27 Mild Steel Plain Washers

• Diameter: M27 (27mm inner diameter)

• Material: High-quality mild steel

• Finish: Self-finish, zinc plated, hot-dip galvanized, or phosphate coated as per requirement

• Thickness: Customized as per client needs or IS standards

• Standards: Manufactured as per DIN 125, IS 2016, ISO 7089/7090 or as specified

• Application: Load distribution, anti-vibration support, bolt protection, and surface safety

Key Features of M27 Mild Steel Plain Washers

1. High Load Distribution
M27 Mild Steel Plain Washers are meticulously engineered to evenly distribute the load exerted by bolts or nuts across a wider surface area. This helps prevent localized pressure points, which can otherwise cause material deformation or cracks in softer substrates. Their wide outer diameter and consistent thickness play a crucial role in maintaining structural balance, especially in large-scale assemblies exposed to dynamic forces or heavy vibration.

2. Excellent Machinability
Crafted from premium-grade mild steel, these washers are known for their easy machinability, making them suitable for mass production and integration in high-speed manufacturing setups. The mild steel composition allows for smooth cutting, shaping, and punching processes, resulting in precise dimensions and superior consistency in every batch. This makes them a preferred choice for OEMs and equipment manufacturers who prioritize reliability in automated assembly lines.

3. Corrosion-Resistant Finish
While mild steel is naturally less corrosion-resistant than stainless steel, our M27 washers are coated with protective finishes—such as zinc plating, galvanization, or oil-dipping—to improve their resistance against rust, humidity, and chemical exposure. This added layer significantly enhances their lifespan when used in indoor environments, covered assemblies, or painted structural components.

4. Optimal Thickness for Heavy-Duty Use
Each washer is manufactured with precise thickness parameters to ensure a secure and snug fit under M27 fasteners. The thickness supports high torque tightening without the risk of washer deformation or material fatigue. This feature is especially beneficial in heavy-duty applications like machinery bases, steel frame connections, and pipe joints, where structural integrity is paramount.

5. Versatile Industrial Use
M27 Mild Steel Plain Washers are compatible with 27 mm bolts and screws, making them highly versatile for various sectors. They are commonly deployed in infrastructure projects, heavy equipment assembly, automotive subframes, HVAC units, steel bridges, and power distribution systems. Their adaptability across mechanical and structural joints makes them an essential hardware component in industrial inventories.

6. Cost-Effective Solution
These washers provide a budget-friendly alternative to stainless steel or alloy washers without compromising on strength and utility. Ideal for bulk use in applications where corrosion resistance is not a primary concern, they offer a smart solution for cost-sensitive projects requiring robust load distribution at scale.

7. Custom Packing Options
To cater to the diverse needs of contractors and industrial clients, Nafees Metal Industries offers flexible packaging solutions. From standard gunny bags and corrugated boxes to palletized containers for export, we ensure safe handling and logistics-friendly packaging for both domestic and international shipments.

8. Reliable Surface Hardness
The surface of each washer is treated and tested to maintain optimal hardness levels, providing excellent resistance to wear, surface indentation, and metal-to-metal friction. This hardness ensures the washers remain dimensionally stable even under repeated tightening or high-pressure environments.

9. Made in India by Experts
Manufactured at our advanced facility in Mumbai, these M27 washers reflect the precision, quality control, and craftsmanship that Nafees Metal Industries is known for. Our commitment to industrial excellence, certified raw materials, and skilled workforce helps us deliver washers that meet IS and DIN standards, ensuring trust and satisfaction across industries.

10. Bulk Supply Available
With a robust production capacity and dedicated stock management, we are fully equipped to fulfill bulk orders with consistent quality and timely delivery. Whether you require M27 Mild Steel Plain Washers for ongoing infrastructure contracts, industrial procurement, or export distribution, we offer reliable supply capabilities tailored to your project timelines.

Applications of M27 Mild Steel Plain Washers

1. Industrial Assembly Lines
M27 Mild Steel Plain Washers are widely used in automated industrial assembly environments, where components must be securely fastened under consistent torque. These washers ensure a balanced load distribution across bolt heads and prevent fastener embedding in the surface, which is critical in maintaining the structural integrity of machinery, conveyor systems, and production equipment. Their reliability under repetitive stress makes them indispensable in high-volume manufacturing processes.

2. Oil & Gas Infrastructure
In oil and gas installations, where mechanical joints are subject to heavy vibration, pressure, and dynamic loads, M27 washers play a vital role in reinforcing fastener security. They are used in bolted flanges, pipelines, pump casings, and compressor mounts to reduce the risk of leaks and joint failures. While not suited for highly corrosive outdoor or offshore conditions without coating, they perform exceptionally well in enclosed equipment rooms or painted support structures.

3. Railway Engineering
From locomotive assembly to track-laying equipment and bridge maintenance, railway infrastructure demands heavy-duty components that can handle constant load and environmental wear. M27 Mild Steel Plain Washers are used to enhance bolt stability in rail fastening systems, bogie frames, engine mounts, and signal posts. Their precise fit and strength ensure safe and secure fastening, which is essential for rail safety and maintenance efficiency.

4. Wind Energy Towers
The construction and maintenance of wind turbine towers require high-strength fasteners that can withstand strong wind loads, vibrations, and temperature variations. M27 washers are employed at the base flanges of turbine towers, nacelle assemblies, and ladder supports. They help distribute pressure evenly, preventing damage to tower sections during bolting and maintenance operations, especially where mild steel bolts are still in use with protective coatings.

5. Transmission Poles and Cable Supports
In the power transmission sector, washers are essential for mounting conductors, insulators, and brackets onto steel poles or lattice towers. M27 washers are used alongside high-tension bolts to reinforce joint stability under variable loads caused by cable tension, wind sway, and electrical equipment vibration. Their ability to maintain bolt preload and protect painted metal surfaces from damage ensures long-term reliability in power distribution systems.

6. General Mechanical Fabrications
M27 Mild Steel Plain Washers are frequently used in custom mechanical projects, structural supports, and fabricated assemblies where large bolts are necessary. Their role is to secure joints, protect surfaces, and extend the life of bolted connections. Applications range from industrial tanks and machine beds to warehouse racking systems and heavy enclosures, offering dependable fastening support across fabrication workshops.

7. Infrastructure and Civil Engineering Works
In bridges, flyovers, tunnels, and building construction, M27 washers are commonly paired with anchor bolts and rebar couplers to strengthen steel-to-concrete connections. Their use is critical in base plates, beam joints, expansion joints, and prefabricated structural steel assemblies. These washers help absorb dynamic load variations caused by traffic, environmental movement, or thermal expansion, ensuring long-lasting and secure connections in civil infrastructure.

Why Choose Nafees Metal Industries?

When you choose Nafees Metal industries, you get more than just a washer — you get a guarantee of quality, precision, and dependability. As a leading M27 Mild Steel Plain Washers manufacturer, we are committed to delivering products that meet international standards and exceed customer expectations.

• Decades of Expertise in metal washer manufacturing

• In-house quality testing for every washer produced

• Large production capacity to fulfill bulk orders promptly

• Customizable washer sizes available on demand

• Strict adherence to international quality standards

• Competitive pricing and on-time delivery across India and overseas

We are proud to be recognized among the best manufacturers of plain washers in India, supplying quality washers to clients in Mumbai and pan-India.

Compatible Products & Sizes

Along with M27 Mild Steel Plain Washers, we also manufacture:

• M6 to M64 mild steel washers

• Square mild steel washers

• Galvanized MS flat washers

• Stainless steel, spring, and disc washers

• Washers in SS304, SS316, SS202, brass, and copper materials

Mild Steel Washers vs Stainless Steel Washers – Choosing the Right Washer for Your Application

When selecting washers for industrial use, the choice between mild steel and stainless steel often comes down to a balance of performance, environment, and budget. Each material type brings its own advantages depending on the specific application requirements. Let’s take a closer look at how Mild Steel Washers (like the M27 variant) compare to Stainless Steel Washers in terms of functionality, strength, and cost-effectiveness.

1. Corrosion Resistance

Stainless steel washers are known for their high resistance to corrosion, rust, and oxidation—especially in outdoor, marine, or chemical exposure environments. Grades like SS202, SS304, and SS316 provide excellent performance in corrosive conditions, making them ideal for coastal projects, food-grade applications, and chemical industries.

On the other hand, mild steel washers, while strong and robust, are more prone to corrosion if left untreated. However, M27 Mild Steel Plain Washers often come with protective finishes such as zinc plating, black oxide coating, or hot-dip galvanizing, which significantly improve their resistance when used in indoor, sheltered, or painted applications. For structural use where the components are not exposed to aggressive elements, mild steel provides excellent durability without the added material cost.

2. Strength and Load Distribution

Both stainless steel and mild steel washers offer excellent load-bearing capacity. However, mild steel washers are generally preferred in high-load and heavy-duty structural applications due to their better tensile strength-to-cost ratio. M27 Mild Steel Plain Washers are designed to handle significant mechanical loads and are commonly used in infrastructure, mechanical fabrications, and industrial equipment assemblies.

While stainless steel washers are also strong, certain grades can be softer than carbon steel counterparts. They are better suited for environments where corrosion resistance takes priority over mechanical strength, such as hospitals, cleanrooms, or marine equipment.

3. Cost Efficiency

This is where mild steel washers hold a major advantage. They are significantly more economical than stainless steel alternatives, especially in bulk supply. When dealing with large-scale industrial projects where thousands of washers are needed, the cost savings can be substantial.

For example, in a construction project where all metal joints are painted or located indoors, using stainless steel washers might unnecessarily inflate the budget without offering any functional benefit. In such cases, M27 Mild Steel Washers provide an optimal solution—strong, reliable, and cost-effective.

4. Application Versatility

Stainless steel washers are ideal for:

• Marine and offshore structures

• Food processing and medical equipment

• Chemical and pharmaceutical industries

• Outdoor fixtures and architectural components

Mild steel washers, such as the M27 variant, are ideal for:

• Steel structures in construction

• Equipment mounting in factories and plants

• Power distribution and transmission towers

• Railways and heavy vehicle assembly

• Wind turbine towers and base plates

• Large mechanical fabrications with painted surfaces

Conclusion: Choosing M27 Mild Steel Washers for Industrial Strength and Savings

If your application does not involve constant moisture, corrosive chemicals, or outdoor weather exposure, mild steel washers like the M27 Plain Washer are a highly recommended solution. They offer excellent mechanical strength, consistent performance, and significant cost savings when compared to stainless steel options.

By opting for M27 Mild Steel Plain Washers, industries can maintain structural reliability and meet engineering standards without overspending on materials. This makes them a popular choice in infrastructure projects, equipment manufacturing, and civil engineering applications across India and abroad.

How to Buy M27 Mild Steel Plain Washers in Bulk

If you are looking to buy M27 Mild Steel Plain Washers in bulk, Nafees Metal Industries offers:

• Bulk discounts for OEMs and contractors

• Reliable packaging for safe transport

• Shipping across India and international destinations

• Custom orders delivered within committed timelines

We are your trusted supplier of MS Flat Washers and industrial-grade washer solutions.

FAQs About M27 Mild Steel Plain Washers

1. What are M27 Mild Steel Plain Washers used for?
   They are used to evenly distribute loads from bolts and prevent damage to surfaces in industrial assemblies.

2. Are M27 Mild Steel Plain Washers rustproof?
   Mild steel isn’t naturally rust-resistant, but we offer zinc, galvanized, or phosphate coatings for enhanced protection.

3. Can I get customized thickness for M27 washers?
   Yes, we offer fully customized thickness options based on your specifications.

4. Do you manufacture washers as per IS standards?
   Absolutely. Our M27 MS Plain Washers are manufactured as per IS 2016 or DIN 125 standards.

5. Are these washers suitable for heavy-duty use?
   Yes, these washers are engineered for heavy load applications like bridges and power plants.

6. Where are you based?
   We are based in Mumbai, India, and deliver products nationwide and internationally.

7. What is the minimum order quantity for bulk purchase?
   Minimum order quantity depends on your requirement; however, bulk rates start from 1000 pcs onwards.

8. What coating options are available for M27 washers?
   Options include zinc-plated, black oxide, galvanized, phosphate, or self-finish.

9. How long is the delivery time?
   Standard orders are dispatched within 2–5 days. Bulk/custom orders may take 7–15 working days.

10. Do you offer test certificates with delivery?
    Yes, we provide raw material test certificates, dimensional inspection reports, and surface finish documentation.

11. Are these washers reusable?
    Yes, if not deformed under stress, mild steel plain washers can be reused.

12. What’s the weight of an M27 mild steel washer?
    Weight varies based on thickness and finish, usually between 20–35 grams each.

13. How do I choose the right washer size?
    The washer’s inner diameter should match the bolt size, and the outer diameter depends on load distribution needs.

14. Can I place orders online?
    Yes, visit our website or contact us directly for order placements and custom inquiries.

15. What industries commonly use M27 MS washers?
    These washers are commonly used in construction, energy, railways, and mechanical engineering industries.

M27 Mild Steel Plain Washers are a vital part of industrial fastening solutions where strength, cost-efficiency, and performance are key. As one of the leading MS Flat Washer manufacturers in India, Nafees Metal Industries delivers products that meet rigorous quality expectations while supporting your business with exceptional service.

Whether you need washers for structural steel applications, heavy-duty machines, or general industrial use, our M27 Mild Steel Plain Washers are built to last. We invite you to buy M27 Mild Steel Plain Washers in bulk from us and experience uncompromised quality.

Visit or Get in Touch for Best M27 Mild Steel Plain Washers Manufacturer

Discover how our high-quality washers can make your assemblies stronger and more reliable. Visit our well-equipped manufacturing unit at Reay Road, Mumbai, or connect with our team for a quote or a custom order.

Nafees Metal Industries — your trusted partner for M27 Mild Steel Plain Washers that last.