S-90068A038 0.391" ID x 0.906" OD Finishing Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with nickel-plated steel construction, extending service life in harsh environments
• Precise 82° countersink angle ensures flush, professional installation with standard flat-head screws
• Optimized dimensions (0.906" OD, 0.391" ID) provide reliable load distribution for 5/16" fasteners
• Durable nickel-plated surface maintains integrity under repeated assembly and disassembly
• Full RoHS 3 and REACH compliance meets stringent international environmental and safety standards
• Inch system compatibility ensures seamless integration with North American machinery and equipment
• Consistent dimensional accuracy guarantees reliable performance in automated or high-volume applications

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 82° countersunk washers solve critical installation challenges where flush surface finishing is essential. The nickel-plated steel construction provides exceptional corrosion resistance, making them ideal for outdoor equipment, marine applications, and chemical processing facilities where moisture and corrosive elements are present. The precise 0.906" OD and 0.391" ID dimensions ensure perfect compatibility with 5/16" screws, distributing clamp load effectively to prevent surface damage and maintain joint integrity. This combination of material durability and dimensional precision makes these countersunk washers invaluable for automotive assembly, structural frameworks, and precision machinery where vibration resistance and long-term reliability are paramount.

Specification Summary & Compliance

Manufactured to precise inch system specifications with 0.906" outer diameter and 0.391" inner diameter, these washers feature a standard 82° countersink angle for compatibility with flat-head fasteners. The products are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring they meet the latest environmental and safety standards for industrial components. Designed specifically for 5/16" screw size applications, these washers maintain consistent dimensional accuracy for reliable performance across various assembly requirements.