GB97 M2/M3/M4/M5/M6/M8 316 Stainless Steel Flat Washers Round Washers for Marine & Outdoor Hardware

Our 316 Stainless Steel Flat Washers (GB97 Standard Round Metal Washers) are professional, corrosion-resistant fastener accessories engineered to enhance the stability, durability, and safety of screw and bolt installations across marine, industrial, and outdoor applications. Crafted from high-quality 316 stainless steel—known for its superior corrosion resistance, rust protection, and resistance to saltwater, chemicals, and harsh environments—these flat washers outperform standard stainless steel options, making them ideal for demanding settings.

 

Designed to comply with GB97 national standards, these round flat washers feature a precise, uniform thickness and smooth surface, ensuring a perfect fit with screws and bolts ranging from M2 to M8. The flat, even design distributes pressure evenly across the fastening surface, preventing damage to materials (such as metal, wood, and plastic), reducing friction, and locking fasteners securely in place—effectively preventing loosening caused by vibration, load, or environmental exposure.

 

Precision-machined for consistent size, structural integrity, and dimensional accuracy, each washer undergoes strict quality control to guarantee compatibility with standard screws, bolts, and fasteners. The 316 stainless steel construction offers exceptional durability, resisting corrosion, oxidation, and wear even in marine environments, food processing facilities, chemical plants, and outdoor installations where reliability is critical.

 

Versatile and practical, these GB97 316 stainless steel flat washers are perfect for a wide range of scenarios, including marine hardware, food processing equipment, industrial machinery, outdoor construction, chemical handling, and high-humidity applications. Available in a full range of sizes (M2, M3, M4, M5, M6, M8), they cater to diverse fastening needs—from small precision projects to large-scale industrial and marine applications. Whether you’re a professional contractor, industrial buyer, or marine specialist, these corrosion-resistant flat washers deliver long-lasting performance and peace of mind.