S-91525A367 1.156" ID x 3" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 stainless steel construction, ideal for chemical, marine, and outdoor applications.
• Precise fit and reliable load distribution with a 1.156" inner diameter specifically designed for 1 1/8" screws, preventing loosening and joint failure.
• Enhanced surface coverage and stability from the large 3" outer diameter, reducing surface pressure and protecting materials from damage.
• Versatile thickness range (0.150-0.220") accommodates minor variations and provides consistent spacing and tension in assemblies.
• Long-term durability and low maintenance with high-quality stainless steel that resists rust and wear, extending equipment lifespan.
• Compliance with strict environmental regulations, including RoHS 3 and REACH, ensuring safe use in regulated industries.
• Broad industrial compatibility as a heavy-duty flat washer suitable for construction, machinery, and structural applications.

Professional Applications & Engineering Value

This 316 stainless steel flat washer is engineered to solve critical challenges in demanding industrial settings. Its high corrosion resistance makes it perfect for applications exposed to moisture, chemicals, or saltwater, such as marine equipment, chemical processing plants, and coastal infrastructure. The precise 1.156" ID ensures a secure fit on 1 1/8" screws, minimizing vibration-induced loosening and maintaining bolt preload. With a large 3" OD and robust thickness, it effectively distributes clamping force over a wider area, preventing surface indentation and material fatigue in heavy-load assemblies like structural steel connections, machinery bases, and pipeline flanges. This design enhances joint integrity, reduces maintenance frequency, and supports long-term operational reliability in industrial washers applications.

Specification Summary & Compliance

This washer features an inner diameter of 1.156", outer diameter of 3", and thickness range of 0.150-0.220", manufactured to standard inch system dimensions for compatibility with 1 1/8" screw size. It is constructed from 316 stainless steel for optimal performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial use.