Serrated Flange Hex Nuts

Handan Hengmai Fasteners Manufacturing Co., Ltd. is one of the most reliable manufacturers and suppliers of serrated flange hex nuts in China. As we have world-leading production equipment and strong manufacturing capabilities, we warmly welcome you to buy bulk high quality serrated flange hex nuts for sale here from our factory. Customized orders are welcome.

Serrated flange hex nuts are integrated anti‑loosening fasteners manufactured strictly in accordance with DIN6923 and ISO4161 standards. The one‑piece structure combines a hex nut, flat washer and anti‑slip serrations into a single component. When tightened, the radial serrations bite tightly into the mating metal surface to generate mechanical friction resistance, effectively preventing loosening under long‑term alternating vibration. Compared with ordinary hex nuts paired with separate washers, this product cuts assembly steps and reduces spare‑part management costs. Our factory runs full‑process production under the ISO9001 quality system, stocks complete metric specifications and provides customized surface treatments for automotive, photovoltaic and mechanical assembly projects across Belt‑and‑Road markets.

1. Integrated flange evenly distributes clamping pressure to avoid sinking deformation on thin sheet‑metal workpieces;

2. Radial serrations lock the connection interface mechanically, delivering stable anti‑loosening performance in high‑vibration scenarios without extra locking accessories;

3. Precision cold‑forged thread matches standard flange bolts smoothly for quick on‑site installation;

4. Multiple anti‑corrosion surface options adapt to indoor workshop and outdoor open‑air operating environments.

Prioritized for high‑vibration assembly scenarios: photovoltaic bracket field installation, automotive chassis and exhaust system fastening, agricultural machinery connection, electrical cabinet assembly and general industrial equipment installation. It is especially favored by buyers who need to shorten construction time and reduce the quantity of purchased spare fasteners.

Each batch undergoes thread go/no‑go gauge inspection, tooth‑shape dimensional check, hardness sampling test and salt‑spray anti‑corrosion test before delivery. Raw steel mill material certificates are archived for full traceability; SGS third‑party test reports can be supplied for bulk orders. We also conduct torque simulation tests to verify anti‑loosening effect under cyclic vibration conditions.

Standard packing: inner moisture‑proof PE bags + outer woven bags with palletizing for sea shipment; small‑batch urgent orders can adopt carton packing with customized shipping marks. Store in dry ventilated warehouses away from corrosive media; avoid heavy stacking extrusion to protect thread integrity and serrated tooth structure. We cooperate with mature freight forwarders to offer FOB/CIF/DDP multi‑mode logistics solutions with predictable transit time.

Pre‑sales engineers can recommend matching strength grades and surface treatments according to your equipment vibration intensity and operating environment. If unqualified products caused by factory quality problems appear after arrival, we support free re‑delivery and bear corresponding logistics costs.

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