S-3127N11 3.2 mm ID x 12 mm OD Finishing Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction, ideal for marine, chemical, and outdoor applications.
• Perfect flush mounting is ensured by the 90° countersink angle, providing a smooth, professional finish and preventing snagging.
• Reliable performance under load with a Rockwell B83 hardness, offering excellent durability and resistance to deformation.
• Precision fit for M3 screws with a 3.2mm ID and 12mm OD, ensuring secure fastening and optimal load distribution.
• Consistent quality and thickness ranging from 2.2mm to 2.8mm, guaranteeing uniform performance in your assemblies.
• Compliance with stringent environmental regulations, being RoHS 3 and REACH compliant for safe and responsible use.
• Broad industrial applicability as a versatile metric fastener suitable for machinery, electronics, and structural applications.

Professional Applications & Engineering Value

This M3 metric countersunk washer is engineered to solve critical challenges in industrial settings where corrosion resistance and a flush surface are paramount. Made from 316 stainless steel, it excels in aggressive environments, preventing rust and maintaining integrity. The precise 90° countersink angle allows screws to sit perfectly flush, eliminating protrusions that could cause injury or interfere with moving parts. This design is essential for applications in precision machinery, marine hardware, and food processing equipment, where smooth surfaces and hygiene are critical. Its robust construction ensures reliable load distribution, reducing stress on fastened components and extending the lifespan of your assemblies, making it a valuable component for engineers seeking durability and compliance.

Specification Summary & Compliance

This washer features a 3.2mm ID and 12mm OD with a thickness of 2.2-2.8mm, designed for M3 screw sizes in the metric system. It adheres to standard dimensional tolerances for precision fit. The 90° countersink angle conforms to common engineering specifications for flush mounting. Manufactured from 316 stainless steel with a Rockwell B83 hardness, it ensures consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for industrial use.