Description
Product Overview
The M6 Black Flat Washers offered by OUSCHR combine precision engineering with robust material selection to meet the demanding needs of modern manufacturing and maintenance environments. Constructed from premium 304 stainless steel, each washer benefits from a protective black coating that not only enhances visual appeal but also adds an extra layer of corrosion resistance, making them suitable for exposure to moisture, salt, and fluctuating temperatures. With an inner diameter of 6.3 mm, an outer diameter of 17.7 mm, and a thickness of 1.9 mm, these washers provide a balanced profile that spreads load evenly across the fastening surface, reducing the risk of material deformation or bolt head damage. The package includes 50 pieces, ensuring ample supply for both small‑scale projects and larger production runs. Detailed specifications such as package dimensions (3.62 × 2.6 × 0.67 inches) and a lightweight of 4.66 oz per pack make inventory handling straightforward. Designed to meet the exacting standards of industrial, automotive, marine, and electronic applications, these washers are a reliable component for any fastener system.
![[Product front view showing all components]](https://www.explorershop.store/wp-content/uploads/2026/07/04cc00d262144652a5ca59f708f44ff5.jpg)
Usage
These M6 flat washers excel in a wide range of practical scenarios where a secure, flat bearing surface is essential. In automotive assemblies, they are placed under bolt heads and nuts to prevent pull‑through and to protect painted surfaces from abrasion. Marine technicians rely on the stainless‑steel composition to resist rust in salty environments, making them ideal for boat deck fittings, engine mounts, and hull hardware. In electronic equipment, the washers provide a stable platform for circuit board mounting, ensuring that vibration does not compromise connections. Industrial machinery benefits from the washers’ ability to distribute clamping forces evenly across large surface areas, extending the lifespan of both the fastener and the adjoining components. Whether used in furniture construction, HVAC systems, or heavy‑duty equipment, the M6 size offers a versatile solution for any application requiring a reliable, non‑slipping interface.
Why Choose Us
Choosing OUSCHR means selecting a partner committed to quality, consistency, and customer satisfaction. Our manufacturing process adheres to strict ISO‑9001 standards, guaranteeing that each washer meets exact dimensional tolerances and material specifications. The 304 stainless‑steel base provides superior resistance to oxidation, pitting, and stress corrosion cracking, ensuring that the washers maintain their structural integrity even under harsh conditions. The black finish is applied using a controlled anodizing technique that does not compromise the underlying steel’s protective properties, delivering a product that looks professional while performing reliably. OUSCHR also offers comprehensive after‑sales support, including technical assistance, rapid response to inquiries, and a straightforward return policy for any defective items. Our commitment to sustainability is reflected in the use of recyclable packaging and environmentally responsible production methods. By selecting our M6 Black Flat Washers, you gain a component that aligns with industry best practices, reduces downtime, and supports long‑term operational efficiency.
Key Features
- Corrosion‑Resistant 304 Stainless Steel with Black Finish – ensures longevity in humid, salty, or high‑temperature environments.
- Precise M6 Dimensions – 6.3 mm ID, 17.7 mm OD, 1.9 mm thickness for perfect fit with standard M6 bolts and nuts.
- Even Load Distribution – flat design spreads pressure, protecting surfaces and extending fastener life.
- Versatile Application Range – ideal for automotive, marine, electronics, industrial machinery, and furniture assembly.
- Dedicated Customer Support – technical help, quick replacements, and hassle‑free returns for peace of mind.
FAQ
What material is used for these washers and how does it affect performance?
The washers are made from 304 stainless steel, a grade known for its excellent corrosion resistance and durability. The added black coating provides extra protection against rust and wear, making the washers suitable for harsh environments such as marine or high‑temperature industrial settings.
Can these washers be used with bolt sizes other than M6?
While the product is sized for M6 fasteners (6.3 mm inner diameter), the outer dimensions and thickness are compatible with a range of bolt sizes when used as a spacer or load‑distribution element. However, for optimal performance, it is recommended to match the washer’s inner diameter to the bolt’s thread size.
How many washers are included in each package and what are the packaging dimensions?
Each package contains 50 washers. The package dimensions are 3.62 × 2.6 × 0.67 inches, weighing approximately 4.66 ounces, which makes storage and handling convenient for both small workshops and larger inventory systems.
Are there any special installation guidelines to maximize the washer’s lifespan?
To achieve the best results, ensure that the washer is placed directly under the bolt head or nut, with the flat side facing the surface to be protected. Avoid overtightening, as excessive torque can deform the washer. Regularly inspect washers for signs of wear, especially in high‑vibration applications, and replace them as needed to maintain optimal performance.
What warranty or after‑sales support does OUSCHR provide?
OUSCHR offers a limited warranty covering manufacturing defects and provides responsive technical support for installation questions or product concerns. If a washer arrives damaged or does not meet specifications, customers can contact our support team for a replacement or refund in accordance with our return policy.




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