S-90452A128 Washers for Square-Neck Bolts

Key Features & Benefits at a Glance

• Corrosion-resistant 18-8 Stainless Steel ensures long-lasting performance in harsh industrial environments, reducing replacement frequency and maintenance costs.
• Precision square hole design (0.812" inside width) provides secure fit and prevents rotation with 3/4" screws, enhancing assembly stability and safety.
• Generous 1.375" outer diameter offers superior load distribution, minimizing surface damage and extending the life of connected components.
• Consistent thickness (0.055-0.065") guarantees reliable performance under pressure, ensuring uniform clamping force in heavy-duty applications.
• RoHS 3 and REACH compliance meets strict environmental regulations, making it suitable for global supply chains and eco-conscious industries.
• Inch system compatibility simplifies sourcing and integration with standard 3/4" screw fasteners, streamlining procurement and installation processes.

Professional Applications & Engineering Value

This square hole washer in 18-8 stainless steel addresses common industrial challenges by providing exceptional corrosion resistance and mechanical strength. The square hole design effectively locks the washer in place, preventing loosening under vibration—a critical feature for machinery, construction, and automotive assemblies using 3/4" screws. Its robust construction ensures reliable performance in heavy-duty applications, from structural bolting to equipment manufacturing, where precision washers are essential for maintaining joint integrity. The inch system measurement and compliant surface finish make it a versatile choice for engineers seeking durable, regulation-compliant fastening solutions.

Specification Summary & Compliance

This washer features an OD of 1.375", inside width of 0.812", and thickness range of 0.055-0.065", designed for use with 3/4" screws in inch-based systems. Manufactured from 18-8 stainless steel, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability for industrial applications.