A serrated flange nut is a one-piece fastener that combines a hex nut and a wide, integrated washer (flange) with small teeth (serrations) on the underside, offering a quicker assembly process and superior resistance to loosening from vibration. The serrations bite into the connected material to maintain the nut's holding power, eliminating the need for a separate washer.
The Custom Low Profile Serrated Hex Flange Nut With Dacromet Finish is an engineered fastening solution designed to simplify complex assemblies while maximizing joint integrity. When handling these nuts, you will immediately notice the distinct, matte-silver finish of the Dacromet coating—a specialized layer that feels smooth to the touch yet provides formidable environmental shielding. Beneath the integrated wide washer flange, precision-cut serrations offer a sharp, tactile edge, engineered to bite securely into mating surfaces. This one-piece design eliminates the need for independent washers, significantly reducing inventory clutter and assembly time on the production line. Engineered to strict dimensional tolerances, these fasteners ensure smooth threading without galling, matching perfectly with standard bolts. Whether securing heavy machinery panels or anchoring structural framework in outdoor installations, this fastener delivers a reliable, vibration-resistant hold that keeps operations running efficiently.
The precision-engineered serrations on the flange’s underside act as microscopic anchors. As torque is applied, these sharp teeth bite firmly into the mating substrate, creating a formidable mechanical grip. This physical embedment prevents the serrated flange nut from backing off or vibrating loose, making it an indispensable component for heavy machinery and vehicular frames subjected to constant dynamic forces.
Featuring a built-in wide flange, this nut naturally functions as a load-distributing washer. By spreading the clamping force over a significantly larger surface area, it minimizes localized pressure on the joined materials. This prevents surface scoring, cracking, or material fatigue, while simultaneously eliminating the logistical hassle of sourcing and tracking separate washers across different project phases.
By combining the nut and washer into a single, unified component, the low profile serrated hex flange nut dramatically cuts down manual handling time. On automated production lines, this translates to fewer moving parts and zero risk of omitted washers. The strict control over flange perpendicularity and concentricity ensures that automated driving tools engage the nut smoothly without jamming, increasing overall efficiency.
Internal threads are tapped to exacting 2B/6H precision tolerances. This meticulous thread control guarantees a perfect geometric match with standard bolts, eliminating the risk of cross-threading or stripping under high torque. The result is a consistent, stable lock that relies purely on mechanical tension rather than chemical adhesives, ensuring long-term structural reliability.
Beyond the standard Dacromet finish, these fasteners can be treated with advanced anti-corrosion coatings like Geomet or Magni. These surface treatments provide exceptional salt-spray endurance for harsh environments while remaining fully compliant with RoHS and REACH environmental directives. The matte coating also offers a dry, non-tacky feel that resists dust accumulation in industrial settings.
Parameter | Details |
Standard | DIN6923/IFI 145/ISO4161/ASME B 18.16.4/ANSI B18.2.2 |
Size | 1/8"-1", M4-M24 |
Material | Carbon Steel, Alloy Steel, Stainless Steel (SS304/SS316), etc. |
Grade | ASTM Gr.2, Gr.5, Gr.8, 2H, Gr.10, SS304, SS316, etc. |
Thread | UNC, UNF |
Finish | Dacromet, Plain, Zinc Plated (Clear/Blue/Yellow/Black), Black Oxide, Nickel, Magni, Geomet, H.D.G., Electrophoresis |
Packing | Bulk in cartons (25kg Max.) + wood pallet, or custom packaging |
Test Equipments | Caliper, Go&No-go gauge, Tensile test machine, Hardness tester, Salt spraying tester, etc. |
Supply Ability | 1000 tons per month |
MOQ | 1000kgs per specification |
Understanding the mechanical demands of your project is crucial when selecting the appropriate fastener. Our low-profile serrated hex flange nuts are available in a comprehensive range of material grades, providing a clear mapping from standard low-carbon steel for general-purpose tasks to high-strength alloy steels (such as Grade 8 or Class 10.9) for critical structural joints. This ensures that every nut delivers the required tensile strength and proof load retention for its specific environment. Furthermore, the precise control over both metric and imperial (UNC/UNF) thread profiles guarantees flawless compatibility with existing bolt inventories, preventing any risk of thread galling or premature joint failure during high-torque applications.
In the automotive and heavy equipment sectors, constant engine vibration and terrain impact can compromise standard fasteners. These serrated flange nuts are specifically deployed in engine mounts, suspension brackets, and industrial pump housings, where their aggressive bite maintains joint tension despite relentless mechanical shaking.
Outdoor structural arrays, such as solar panel mounting frames and petrochemical pipeline supports, face constant exposure to moisture, UV rays, and corrosive chemicals. The advanced Dacromet and Geomet coatings provide a robust barrier against oxidation, ensuring that maintenance crews can still unthread the serrated hex flange nuts years after initial installation without encountering rust-welded joints.
For agricultural implements, conveyor belt systems, and automated manufacturing lines, equipment uptime is critical. The one-piece design accelerates the initial build phase and simplifies routine maintenance. Technicians can perform rapid assembly and disassembly in the field without worrying about dropping or losing loose washers in hard-to-reach machinery compartments.
We operate as a direct manufacturing facility equipped with a dedicated international sales division. By managing the entire lifecycle—from raw material forging to final surface coating—we maintain strict oversight over dimensional accuracy and structural integrity, offering direct-from-factory pricing without intermediary markups.
Absolutely. We routinely process custom fabrication requests for non-standard dimensions, specialized thread pitches, or specific environmental coatings. By submitting your technical drawings or physical samples, our engineering team will evaluate the specifications and provide a detailed production roadmap and accurate cost assessment.
Quality assurance is integrated into every phase of our manufacturing. We execute rigorous in-process monitoring and conduct comprehensive final inspections based on standard international protocols. Detailed documentation, including metallurgical analysis, hardness testing, and salt-spray corrosion reports, is readily available to validate the performance of every batch.
We maintain a high-volume inventory of standard DIN6923 and IFI 145 specifications, enabling immediate dispatch for routine requirements. For large-scale or specialized production runs, standard turnaround ranges from 15 to 35 days. We also offer flexible, staggered delivery schedules to align with your ongoing project phases and inventory capacities.
Minimum Order Quantity (MOQ): Standard specification orders begin at 1,000 kgs. We maintain flexibility for specialized custom runs or pilot projects; please consult our team to discuss tailored volume requirements.
Global Trade Terms: We support a comprehensive range of shipping terms including FOB, CIF, CFR, CNF, EXW, DDU, and DDP, allowing you to select the logistics model that best fits your supply chain strategy.
Secure Payment Methods: Standard terms are T/T (30% initial deposit with the 70% balance cleared against the document copy). We also accommodate L/C or other mutually agreed terms for larger financial arrangements.
Industrial Packaging & Logistics: To ensure your components arrive in pristine condition, all orders are packed in heavy-duty, moisture-resistant cartons (strictly limited to 25kg to ensure safe handling). These are then secured onto fumigation-free wooden pallets, wrapped, and banded, providing maximum protection against humidity and physical impact during extended maritime transit.
Customization: We accept non-standard designs—simply provide technical drawings or samples for a tailored fastening solution.
With over a decade dedicated exclusively to industrial fastening solutions, our manufacturing footprint extends heavily across North and South American markets. Our deep understanding of IFI, DIN, and ISO frameworks ensures that every component we produce aligns perfectly with stringent global engineering expectations.
We streamline your procurement process by offering an exhaustive portfolio of hardware, standard fasteners, and custom-machined parts. This consolidated approach allows purchasing managers to reduce vendor count, lower administrative overhead, and minimize complex logistical coordination.
Every production batch is subjected to a battery of mechanical tests, including tensile strength verification, Rockwell hardness checks, and accelerated salt-spray exposure. This unyielding commitment to testing guarantees that our fasteners will perform reliably under the most demanding environmental and mechanical stresses.
We encourage rigorous physical evaluation before you commit to volume purchasing. Complimentary samples are available for your engineering team to test in real-world applications. Additionally, our technical support staff is always on standby to advise on material selection, torque specifications, and corrosion-prevention strategies.
