Import All Kinds Of High Quality Nuts — Buy in wholesale FOB from Supplier in China

Qingdao Wokno Machinery Co.,Ltd. manufactures hex nuts, flange nuts, cap nuts, and specialty configurations across carbon steel, stainless steel, brass, and aluminium grades from its facility in Laoshan District, Qingdao, Shandong Province. The product line includes ISO, DIN, JIS, ANSI, BSW, and GB standard fasteners, with non-standard nut production to customer drawings. Carbon steel nuts are typically produced from C35, C45, or 35CrMo for structural applications, with proof load values per ISO 898-2; stainless steel options span SS304 (A2-70) and SS316 (A4-80) for corrosion-resistant service. Surface finishes include zinc plating (8-12 μm, white or yellow passivated), hot-dip galvanising (40-60 μm), nickel plating, and black oxide, with salt spray resistance varying by treatment and base material.

Thread forms are produced as metric coarse (standard ISO 261/262) with 6H internal tolerance for nut threads; unified and BA threads are available to ANSI/ASME B1.1 and B1.12 upon specification. The manufacturing chain employs multi-station cold heading for nut blank formation, followed by tapping on rotary or vertical spindle machines, heat treatment (quench and temper for carbon steel to achieve 8, 10, or 12 property classes), and surface finishing with subsequent baking for hydrogen embrittlement relief. Dimensional tolerances for DIN 934 hex nuts specify width across flats (s) ±0.13 mm for M8, ±0.20 mm for M12, and thickness (m) ±0.30 mm for M8, with straightness and perpendicularity controlled by gauging. Brass nuts in C36000 or C37700 suit plumbing and electrical applications; aluminium 6061 nuts offer weight reduction for automotive and aerospace assemblies where galvanic compatibility is managed.

Typical buyers include machinery OEMs, construction steel fabricators, automotive tier suppliers, and MRO distributors who require lot traceability and mill test certificates. The standard carton of 36 x 24 x 16 cm or 36 x 24 x 12 cm dimensions ships on 110 x 80 x 90 cm Euro pallets, though custom carton sizing is negotiable. No MOQ, price, or specific lead time beyond the 7-15 working day reference is stated in the profile; these must be confirmed per SKU, material grade, and finish. Heat treatment records, plating thickness test reports, and dimensional inspection sheets should be requested as standard document packets with each shipment.

Qingdao Wokno Machinery Co.,Ltd. is located at Innovation Park, Laoshan District, Qingdao, Shandong Province, China, 266102. The supplier holds a 'harbor' trust tier, indicating basic platform verification without extended assurance or audited credentials. Response metrics show 0.00% response rate and zero average response hours, suggesting that platform messaging may yield slow replies and that buyers should establish direct contact via email or telephone for reliable communication.

The company operates auto pressing machines, automatic heading machines, CNC machining centres, cold headers, surface grinders, and inspection equipment including hardness testers, electrolytic thickness gauges, and vision measuring systems. No information is provided on year of establishment, employee count, annual revenue, named clients, or specific factory floor area. The profile states a supply capacity of 50 tonnes per month, though buyers should validate this against actual order history. After-sales follow-up is mentioned as a service, but warranty terms, complaint resolution procedures, and technical support channels are not detailed. Prospective buyers are advised to request a factory audit, quality manual, and recent third-party inspection reports before large commitments.