Import 304 Hex Nut — Buy in Bulk from Supplier in China

Zhengzhou Huitong Pipe Fittings offers 304 stainless steel hex nuts in sizes spanning M3 to M64, manufactured to DIN 934 and compatible with DIN 931, DIN 933, DIN 439, DIN 835, DIN 7991, ISO, JIS, ANSI/ASME and BS standards. The 304 grade (UNS S30400, 18% chromium, 8% nickel austenitic stainless steel) delivers reliable corrosion resistance for general industrial service. Thread form follows metric coarse pitch per ISO 261, with hexagonal head geometry designed for standard spanner and socket engagement. The supplier also produces matching bolts, threaded rod, studs, screws, washers and gaskets in the same material spectrum, allowing full fastener set procurement from a single source.

The 304 hex nut is machined or cold-formed from solution-annealed bar stock, with typical hardness of 70 HRB maximum and proof load stress of 210 MPa for property class A2-70 fasteners. Surface finish is plain passivated (typical), though the source description does not specify whether pickled, electropolished or coated variants are stocked. The supplier lists additional stainless grades including 304L, 316, 316L, 321, 316Ti, 347, 347H, 310S, 309S and 310, plus duplex 2205/2507 and nickel alloys such as Monel 400, Inconel 600/625/718 and Hastelloy C276. Packaging is plywood case or wooden box, suitable for ocean freight and preventing transit damage.

These nuts suit chemical processing, power generation, marine construction, food equipment and general machinery where atmospheric corrosion resistance is required without the cost premium of 316 or duplex grades. Buyers typically use them with matching 304 bolts or threaded rod in assemblies subject to moderate chloride exposure, temperature cycling up to approximately 425 °C intermittent service, and vibration environments where locking features may be needed. The supplier notes export experience to the United States, Germany, Saudi Arabia and South Korea, indicating familiarity with diverse certification and documentation requirements.

Zhengzhou Huitong Pipe Fittings operates from Room 2004, Expo Center, Dongfeng Road, Zhengzhou 450000, Henan Province, China. The supplier holds an imported tier classification within the platform's harbour trust tier, with a response rate currently showing 0.00% and zero recorded average response hours. This profile indicates either a new listing, limited platform engagement, or operational characteristics that prospective buyers should verify directly before reliance. The address places the company in Zhengzhou, a central Chinese logistics hub with established metalworking and fastener manufacturing supply chains.

The listing presents an extremely broad product catalogue spanning standard stainless fasteners through exotic nickel alloys including duplex 2205/2507, super-austenitic 254SMO, Monel, Inconel, Incoloy, Hastelloy and Nimonic grades. This breadth suggests either substantial inventory depth, extensive subcontracting relationships, or a trading model rather than captive manufacturing. The source description does not state factory ownership, ISO certification, production capacity, quality system accreditation, or specific inspection protocols. Buyers should request mill test certificates, material certificates per EN 10204 3.1 or 3.2, and dimensional inspection reports for their specific grade and size requirements.