Import Astm F436 Hardened Structural Washers — Buy in Bulk from Supplier in China

ASTM F436 hardened structural washers from Jiaxing Musteel Hardware Co., Ltd. are precision-engineered fasteners designed for use with high-strength bolts in steel frameworks, bridges, and heavy machinery. The washers conform to the ASTM F436 standard, ensuring uniformity in hardness, flatness, and load distribution under bolt heads. Supplied with a plain finish and hot dip galvanized surface treatment, they resist corrosion in outdoor or industrial environments while maintaining structural integrity under dynamic loads.

The washers are manufactured from steel, with a standard composition meeting typical ASTM F436 requirements for carbon, manganese, phosphorus, and sulfur content. The hot dip galvanizing adds a zinc coating of standard thickness (typically 45-85 µm), providing a durable barrier against rust and wear. Dimensions adhere to DIN standards, with typical outer diameters ranging from 12 mm to 76 mm and inner diameters matched to common bolt sizes (e.g., M6 to M36). Tolerances for flatness and thickness are controlled to ensure consistent performance in preloaded joints.

These washers are primarily used in construction, infrastructure, and manufacturing sectors where bolted connections require enhanced load-bearing capacity. Buyers in the general industry segment source them for applications such as steel frame assemblies, pipeline supports, and equipment bases. The supplier offers a monthly production capacity of 5000 tons, with lead times starting at 45 days for orders of 1 to 10,000 pieces. Packaging is in cartons with plastic bags to prevent moisture damage during transit.

Jiaxing Musteel Hardware Co., Ltd. is based in Nanhu District, Jiaxing, Zhejiang Province, China, with its registered address at A905 Shanghui, Dongzha Street. The company specializes in the production and export of fasteners, including structural washers, bolts, and nuts, catering to industries such as construction, infrastructure, and general manufacturing. Its location in Jiaxing, a hub for hardware manufacturing, provides logistical advantages for both domestic and international distribution.

The supplier operates with a harbor trust tier, indicating a verified presence on the platform. While the listed response rate and average response hours are currently at zero, the company’s focus remains on bulk supply capabilities, with a stated monthly output of 5000 tons. The product portfolio is centered on standardized fasteners, and the company adheres to international standards such as ASTM and DIN for its offerings.