Stainless Steel Carbon Steel Square Washer

This product is a 304 stainless steel square gasket (also known as square flat washer, square gasket, curtain wall-specific square gasket, aluminum profile square gasket). It is a universal fastener specially designed to distribute the compressive force, protect the surface of the workpiece, and enhance the connection stability. The product is made of national standard 304 austenitic stainless steel as the core material, and is formed through multiple processes such as precision stamping and passivation for rust prevention. The square structure can increase the force-bearing area, perfectly adapting to the connection scenarios of bolts / nuts, especially suitable for aluminum profile frames, curtain wall structures, steel structures and other scenarios with high requirements for force uniformity and rust resistance, providing stable, long-lasting and rust-proof protection solutions for various connections.

Product features

High-quality 304 stainless steel substrate, with full protection against rust and corrosion

Crafted with national standard 304 stainless steel (06Cr19Ni10), with compliant nickel-chromium content, non-magnetic, non-toxic and harmless, featuring excellent resistance to acid and alkali, salt fog, and rust, capable of long-term use in humid, outdoor, coastal, and chemical environments, without rusting or oxidizing, fully meeting food-grade and outdoor engineering usage standards, with a service life far exceeding that of carbon steel square pads.

Standard square structure, protecting the workpiece with dual advantages

Strictly following GB/T 97.2, DIN 436 and other international standards for design, the square planar structure distributes force evenly, significantly dispersing the tightening force of bolts / nuts, avoiding damaging or cracking the surface of the workpiece (such as aluminum profiles, wood, thin plates), while increasing the contact area and enhancing connection stability, perfectly adapting to scenarios such as aluminum profile channels, curtain walls, etc.

High-precision stamping process, precise dimensions and smooth edges

Using fully automatic precision stamping technology, the inner holes and external dimensions are precise, with strict tolerance control, edges are smooth without burrs or scratches, will not scratch the surface and threads of the workpiece, the inner holes and bolts are perfectly compatible, installation is smooth without jamming, ensuring uniform connection force.

Passivation anti-rust process, dual improvement of performance and lifespan

The product undergoes passivation anti-rust treatment, forming a dense oxide film on the surface, maximizing the anti-corrosion performance, while eliminating internal stress, reducing stress concentration, and extending the product lifespan; the surface has a strong matte texture, clean appearance, suitable for various industrial and engineering scenarios.

Full specification coverage, customized services

Covering the full range of M3-M20 compatible specifications, square side lengths and thicknesses are all available, and also supports non-standard customization, according to customer requirements, customizing special sizes, special materials (316/2205 stainless steel) for square pads, meeting personalized needs for special working conditions.

Automotive Industry:

Securing automotive components such as brake assemblies, engine parts, and suspension systems where even load distribution is crucial for performance and safety.

Construction and Architecture:

Use in concrete formwork to provide a stable and even surface for securing form panels.

Attaching decorative elements, signage, and lighting fixtures to building structures.

Furniture Manufacturing:

Joining wooden or metal parts in furniture frames to prevent the wood from cracking or splitting under pressure.

Leveling feet or legs on furniture to ensure stability on uneven surfaces.

Electronics and Appliance Assembly:

Securing electronic components and casings in appliances to prevent damage from vibration.

Mounting electronic equipment within enclosures to ensure a secure and even fit.

Machine and Equipment Building:

Fastening parts in machinery where a large bearing surface is needed to prevent damage to the machined surface.

Use in vibration-dampening applications to reduce wear and tear on moving parts.

Agricultural Equipment:

Attaching components in agricultural machinery that are subject to constant movement and vibration.

Securing equipment to tractors and other heavy machinery.

Bridge and Infrastructure Construction:

Use in bridge construction for securing structural elements that experience significant stress and vibration.

In infrastructure projects where a high load-bearing capacity is required.

DIY and Home Improvement Projects:

General-purpose use in home improvement tasks such as hanging shelves, securing decking, and assembling outdoor structures.

Boat and Marine Applications:

Securing components in marine environments where corrosion resistance is essential.

Use in boat construction and repair to ensure a tight and secure fit that withstands water and salt exposure.

Exterior Signage and Display Mounting:

Mounting signs, billboards, and display boards to walls or other structures, providing a secure and even distribution of weight

Q:What types of fasteners do you manufacture or supply?

A:We offer a comprehensive range of fasteners including bolts, screws, nuts, washers, anchors, and specialty fastening products in various materials and finishes.

Q:Do you provide custom fasteners for specific applications?

A: Yes, we specialize in manufacturing custom fasteners tailored to customer specifications, including unique sizes, materials, and coatings.

Q:Can you supply fasteners with specific surface treatments?

A:We offer surface treatments like zinc plating, hot-dip galvanizing, black oxide coating, and powder coating to meet different corrosion resistance and aesthetic requirements.

Q:What is your minimum order quantity (MOQ) for custom fasteners?

A:Our MOQ varies depending on the fastener type and customization requirements. We can discuss your specific needs to provide a personalized quote.