
Customized Sizes and Features Hot Sale Pressure-Resistant Flat Washers. Customized Sizes Available: Metric and inch sizes available with custom dimensions to meet specific requirements. Multiple Material Options: Stainless Steel 201, 304, 316, 430 and Carbon Steel grades available. Wide Range of Surface Treatments: Polishing, Black Oxide, Zinc Plating, Hot-dip Galvanizing, Bluing, and more. Free Samples Provided: Complimentary samples available, though delivery charges apply. ISO9001 Certified: Manufacturing process certified under ISO9001 quality standards. Strict Quality Control: 100% inspection steps implemented before shipment. Factory Direct Supply: Direct from Hebei Gaonuo New Energy Technology Co., Ltd. source factory. Comprehensive Packaging: Inner bag, master carton, wooden pallet, stretch film, desiccant, and edge protectors.