S-92538A440 4.3 mm ID x 16 mm OD Finishing Washers
Finishing Washers
Image may differ from product. See technical specification for details.
Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Geometric Parameters
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
- Precise 90° countersink angle ensures flush, secure seating with M4 flat-head screws for a professional finish
- Exceptional durability provided by Rockwell B83 hardness, resisting deformation under load
- Reliable dimensional accuracy with 4.3mm ID and 16mm OD for consistent fit and function
- Environmental compliance with RoHS 3 and REACH standards, ensuring safe use in regulated industries
- Versatile metric sizing compatible with M4 screws, ideal for international engineering projects
- Optimized load distribution from 2.7-3.3mm thickness, reducing stress on assembled components
Professional Applications & Engineering Value
This M4 countersunk washer is engineered to solve critical challenges in industrial assembly where flush mounting and corrosion resistance are paramount. The 18-8 stainless steel material provides excellent protection against rust and chemical exposure, making it ideal for outdoor equipment, marine hardware, and food processing machinery. The precise 90° countersink angle perfectly matches standard flat-head screws, eliminating protrusions that could snag or compromise safety. With its metric dimensions and consistent 2.7-3.3mm thickness, it ensures uniform clamping force and prevents loosening in high-vibration applications like automotive assemblies and machinery frames. These washers deliver reliable performance where durability and regulatory compliance are non-negotiable.
Specification Summary & Compliance
This washer meets standard metric dimensions with an inner diameter of 4.3mm, outer diameter of 16mm, and thickness ranging from 2.7-3.3mm, designed for M4 screw size compatibility. It features a 90° countersink angle and is manufactured from 18-8 stainless steel with a hardness of Rockwell B83 for consistent mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.
