S-92538A464 4.3 mm ID x 16 mm OD Finishing Washers
Finishing Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Geometric Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh or humid environments.
- Precise 100° countersink angle ensures a flush, professional finish with M4 flat head screws, reducing snagging and improving safety.
- Enhanced durability and load distribution from Rockwell B83 hardness, minimizing wear and deformation under pressure.
- Accurate metric sizing (4.3mm ID, 16mm OD) guarantees a perfect fit for M4 screws, streamlining assembly and reducing errors.
- Full regulatory compliance with RoHS 3 and REACH standards, ensuring safe, eco-friendly use in global markets.
- Consistent thickness (2.7-3.3mm) provides reliable sealing and spacing, maintaining joint integrity over time.
- Versatile metric system compatibility simplifies sourcing and integration into international engineering projects.
Professional Applications & Engineering Value
This M4 countersunk washer is engineered to address common industrial challenges, such as corrosion-induced failure and imprecise fastening. Made from 18-8 stainless steel, it offers excellent resistance to rust and chemicals, making it suitable for demanding sectors like automotive, marine, and food processing. The 100° countersink angle pairs seamlessly with flat head screws, eliminating protrusions that could compromise aesthetics or safety in machinery and enclosures. With a Rockwell B83 hardness, the washer maintains its shape under vibration and load, reducing maintenance needs. Its metric dimensions ensure compatibility with standard M4 screws, facilitating quick, error-free installations in assembly lines and structural applications where reliability is critical.
Specification Summary & Compliance
This washer features precise metric dimensions: Inner Diameter of 4.3 mm, Outer Diameter of 16 mm, and Thickness ranging from 2.7 to 3.3 mm, designed for M4 screw sizes with a 100° countersink angle. Manufactured from 18-8 stainless steel with a hardness of Rockwell B83, it adheres to standard metric tolerances for consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety requirements for industrial use.
