Import Carriage Bolt, Din603, Iso8677 — Buy in Bulk from Supplier in China

Ningbo Songhe Fastener Co., Ltd. offers carriage bolts compliant with DIN603 and ISO8677 standards, covering a broad thread size range from M3 to M33 and 1/4 to 1 1/4 inch in UNC/UNF configurations. The bolts are available in multiple materials, including stainless steel (SUS304, SUS304L, SUS316, SUS316L) and carbon steel (1018A, 1022A, 35#, 45#, 35CrMo, 42CrMo, 40Cr), with grades such as A2-70, A4-80, 4.8, 8.8, and 10.9. Surface treatments include natural, passivated, black, zinc Cr+3, YZP, and hot-dip galvanized (H.D.G.).

DIN603 specifies a round head with a square neck under the head, designed to prevent rotation when installed in wood or soft materials. The thread length options (6 mm to 500 mm) and material diversity allow these bolts to serve applications from light-duty furniture to heavy industrial machinery. Stainless steel grades like A2-70 (SUS304) and A4-80 (SUS316) are typical for corrosion-resistant environments, while carbon steel grades (e.g., 8.8, 10.9) provide higher tensile strengths for structural use.

These bolts are widely used in European and international markets where DIN and ISO standards are preferred. Buyers in construction, shipbuilding, and automotive sectors often source DIN603 bolts for their precision and compatibility with metric nuts and threaded components. The supplier’s location in Dagang Industry, Ningbo, positions it near major ports for efficient bulk exports.

Ningbo Songhe Fastener Co., Ltd. is located at No.527 Fenyang Two Road in the Dagang Industry zone of Ningbo, Zhejiang. The company specializes in a broad selection of fasteners, including bolts, nuts, screws, and washers, with a focus on international standards such as DIN, ISO, and ASME/ANSI.

The supplier’s profile confirms its imported-tier status with a harbor trust tier, indicating a verified presence in Ningbo’s export-oriented manufacturing sector. No additional details about certifications, production volume, or client base are provided, so buyers should request these directly if required for their procurement process.