S-93661A113 0.125" ID x 0.312" OD SAE Washers

Key Features & Benefits at a Glance

• Superior electrical conductivity for reliable performance in electrical systems and grounding applications
• Excellent corrosion resistance ensuring long-term durability in harsh environments and plumbing systems
• Precise SAE dimensional standards guaranteeing perfect fit and consistent performance with No. 4 screws
• Optimal load distribution through flat washer design that protects surfaces and prevents loosening
• REACH compliance assurance meeting strict environmental regulations for safe industrial use
• Copper material benefits providing natural antimicrobial properties and thermal conductivity advantages
• Thin profile design (0.025-0.040" thickness) allowing for space-constrained applications without compromising performance

Professional Applications & Engineering Value

These copper flat washers deliver exceptional engineering value through their high-conductivity copper material and SAE standard dimensions. The 0.125" ID x 0.312" OD specification ensures precise compatibility with No. 4 screw applications, while the copper construction addresses critical industrial challenges. In electrical systems, they provide reliable grounding and current transfer, preventing connection failures. For plumbing and hydraulic systems, the corrosion-resistant properties maintain seal integrity against moisture and chemicals. The flat washer design distributes clamping force evenly, protecting delicate components and preventing surface damage in assembly operations. This combination of material excellence and dimensional precision makes them ideal for maintenance, manufacturing, and repair applications where electrical performance and environmental resistance are paramount.

Specification Summary & Compliance

These SAE standard flat washers feature precise inch measurements with 0.125" inner diameter and 0.312" outer diameter, designed specifically for No. 4 screw sizes. The thickness ranges from 0.025" to 0.040" to accommodate various application requirements. Manufactured to SAE flat washer specifications, these components maintain dimensional accuracy for reliable performance. The product is fully REACH compliant (EC 1907/2006) as of June 14, 2023, meeting environmental safety standards with 235 SVHC compliance, ensuring safe use across industrial sectors.