Import Din912 Hexagon Socket Head Cap Screws — Buy in Bulk from Supplier in China

DIN912 hexagon socket head cap screws from Shanghai Xinluo Enterprises Devlopment Co., Ltd. are manufactured in strength classes 8.8, 10.9, and 12.9, using alloy steel rather than stainless steel, contrary to common assumptions. These grades indicate tensile strength ranges of 800, 1000, and 1200 N/mm² respectively, with corresponding yield strengths. The screws feature a hexagon socket drive and are fully threaded, complying with DIN 912 dimensional standards.

The product is made from medium-carbon alloy steel, typically 35CrMo or 40Cr, heat-treated to achieve the specified mechanical properties. Surface finish options include zinc plating or black oxide, both applied after heat treatment to preserve core hardness. Unlike stainless steel variants, these screws are not corrosion-resistant by material composition and require protective coatings for outdoor use. The listing does not specify whether coatings meet ISO 4042 or ASTM B633 standards.

These screws are intended for mechanical and structural applications in automotive, heavy machinery, and aerospace sectors where high tensile load-bearing is required. Buyers include Tier 1 automotive suppliers, maintenance contractors for industrial equipment, and OEMs assembling high-stress assemblies. Packaging is in cartons, with no stated MOQ. Lead time and delivery terms are not listed in the source data and must be confirmed directly with the supplier.

Shanghai Xinluo Enterprises Devlopment Co., Ltd. is located at No.258 Luotai Road in Baoshan District, Shanghai. The supplier is classified as imported and harbor-tier, indicating basic platform verification but no independent audit or factory inspection details. The listing does not state years in business, workforce size, or export history. There is no mention of internal quality control processes or testing equipment.

The company presents itself as a distributor or manufacturer of industrial fasteners, with emphasis on strength classes and packaging. No certifications are confirmed beyond the mention of ISO and CE in the source description, which are not verified or documented in the data. The supplier does not list any client references, production capacity, or technical documentation availability. All claims are marketing statements without supporting evidence.