S-3118N12 0.14" ID x 0.5" 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.
• Precise flush-mounting with an 82° countersink angle, ensuring a smooth, professional finish and preventing snagging.
• Excellent mechanical strength and durability provided by a Rockwell B83 hardness, resisting deformation under load.
• Reliable fit and function for No. 5 screws with a 0.14" ID and 0.5" OD, distributing load effectively.
• Guaranteed material safety and compliance with RoHS 3 and REACH regulations, ensuring suitability for sensitive industries.
• Robust performance in demanding applications due to a substantial thickness range (0.094-0.114"), offering enhanced stability.
• Broad compatibility with inch-system fasteners, simplifying sourcing and assembly in various industrial settings.

Professional Applications & Engineering Value

This 316 stainless steel countersunk washer is engineered to solve critical challenges in demanding industrial environments. Its high corrosion resistance makes it indispensable in marine, chemical processing, and food-grade applications where exposure to moisture and aggressive agents is a constant concern. The precise 82° countersink angle ensures a perfect flush fit with corresponding screw heads, eliminating protrusions that can cause injury, snag on materials, or compromise aerodynamic surfaces. This design is crucial for achieving a smooth, professional finish in assembly lines, machinery, and structural frameworks. Combined with its Rockwell B83 hardness, this washer maintains its shape and clamping force under vibration and heavy loads, preventing joint failure and reducing maintenance needs. It delivers reliable, long-term performance where precision and durability are non-negotiable.

Specification Summary & Compliance

This washer is manufactured to precise dimensional standards with an Inside Diameter (ID) of 0.14" for No. 5 screw size, an Outside Diameter (OD) of 0.5", and a Thickness of 0.094-0.114". It is compliant with major environmental and safety regulations, including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming it is free from hazardous substances and safe for use in regulated markets.