Import Astm F436 Flat Washer — Buy in Bulk from Supplier in China

ASTM F436 flat washers are unhardened steel washers designed for use with fasteners in structural applications, providing a smooth bearing surface to distribute loads and prevent damage to mating materials. These washers are manufactured to meet the dimensional and material requirements of ASTM F436, which covers plain, carbon steel washers for general use. The listing from Zhengzhou Huitong Pipe Fittings includes a broad range of materials, with carbon steel as the standard for F436 compliance.

The washers are typically produced in standard sizes to match bolt diameters from M6 to M64, with outer diameters and thicknesses conforming to ASME B18.22.1. For example, a washer for an M12 bolt may have an outer diameter of 24mm and a thickness of 2.5mm, with a standard tolerance of ±0.5mm. Material options extend beyond carbon steel to include stainless steel grades (e.g., 304, 316) and high-performance alloys like Inconel or Monel, though ASTM F436 specifically applies to unhardened carbon steel.

These washers are widely used in construction, piping systems, and machinery to ensure even load distribution under bolt heads or nuts. Buyers in industries such as oil and gas, automotive, and infrastructure source them in bulk for projects requiring consistent, reliable performance. The supplier’s listing does not specify MOQ, packaging, or lead time, so these details must be confirmed directly with Zhengzhou Huitong Pipe Fittings.

Zhengzhou Huitong Pipe Fittings is located in Zhengzhou, Henan Province, with its office at Room 2004, Expo Center, Dongfeng Road. The company specializes in a broad selection of fasteners, including bolts, nuts, washers, and threaded rods, as well as pipe fittings. Its product portfolio covers multiple international standards, such as DIN, ISO, ANSI/ASME, and JIS, catering to global markets.

The supplier’s listing highlights an extensive inventory of materials, including carbon steel, stainless steel (e.g., 304, 316), duplex stainless (e.g., 2205, 2507), and high-performance alloys like Inconel, Monel, and Hastelloy. However, the profile does not provide details on certifications, production capacity, or response metrics, so these should be clarified directly with the company. The harbor trust tier indicates a baseline level of trade verification.