DIN 6923 Stainless Steel Serrated Hex Flange Nuts | SS304 & SS316 Anti-Slip Lock Nuts

Product Highlights

• Integrated Flange Base: Features a built-in washer-like flange head that distributes clamping pressure over a wider surface area, protecting delicate housing materials.
• Serrated Anti-Slip Base: Specially engineered with angled serrations that bite into the mating material, providing excellent vibration resistance to prevent loosening under heavy dynamic loads.
• Superior Coastal Rust Prevention: Available in professional SS304 and marine-grade SS316 (Grade A4-80), making them highly reliable for tropical, high-salinity, and high-humidity engineering environments across Southeast Asia.
• Precision Thread Alignment: CNC cold-forged and precise thread rolling guarantee standard 6H thread tolerance, eliminating structural jamming or thread stripping during high-speed assembly.
• Zero-Burr Bright Finish: Advanced surface passivating and polishing processes ensure uniform smooth surface finishes and maximum resistance to chemical pitting.

Product Specifications

📦 Packing & Logistics Data

• Bulk Industrial Packaging: 25 kg per reinforced 5-layer corrugated carton, neatly stacked 36–48 cartons per standard export non-fumigation wooden pallet (approx. 1 ton per pallet).
• Anti-Humid Protection: Inner heavy-gauge waterproof plastic sealing liner per carton to block marine humidity scaling during tropical trans-ocean shipping.
• Custom Packaging Kits: Supports tailored plastic bins or small boxes (e.g., 200/500/1000 pcs per retail box) branded with your custom labels and barcodes for distribution markets.
• FCL Loading Capability: Maximized payload up to 20–25 metric tons per 20GP container depending on target port weight regulations in destinations like Jakarta, Manila, or Ho Chi Minh City.

Manufacturing Standards & Dimension Correspondence

We maintain ultra-high dimensional accuracy controlled within a strict tolerance profile (±0.02 mm):

• Serrated Profile Design: The 30° reference serration angle ensures single-direction locking friction without damaging structural bolts.
• Flange Diameter (dc) Metric Compliance: M6 (dc max 14.2 mm), M8 (dc max 17.9 mm), M10 (dc max 21.8 mm), M12 (dc max 26.0 mm).
• Thread Tolerance: 6H metric class precision fitment guaranteeing zero-wobble engagement with standard DIN933 hex bolts.

Application Scenarios

Widely deployed in vibrating machineries, automotive assemblies, steel structural frame joints, solar panel framing arrays (coastal PV tracking setups), marine deck equipment, and chemical industrial piping networks. The serrated base eliminates the need for separate split-spring or flat washers, accelerating structural assembly lines for large-scale agricultural and municipal infrastructure projects throughout Southeast Asian networks.

Why Choose Us?

• Factory-Direct Pricing Advantage: Situated directly in Handan’s massive fastener hardware core. By eliminating middlemen trading networks, we offer direct wholesale cost benefits to international sourcing procurement managers.
• Substantial Stock Holdings: We maintain constant stock levels for standard metric sizing (M6 to M12) allowing for rapid-turnaround shipments within 1–3 business days.
• 100% Comprehensive QC Inspection: Every production run undergoes automated batch micro-hardness validation, tensile proof load qualification, and spectrometer analysis ensuring exact Ni/Cr content.
• Rapid Engineering Customization: Turnaround on tailored layout prints, specific structural thread pitches, or alternative non-standard flange dimensions with 99% blueprint engineering accuracy.

Commercial & Sourcing Terms

• MOQ (Minimum Order Quantity): 100 pieces for available in-stock configurations. A baseline MOQ of 1,000 pieces per size applies for non-stocked runs or custom specialized grade requests.
• Tiered Wholesale Matrix: Direct volume-discount structures based on aggregate unit sizes (100–19,999 pcs / 20,000–99,999 pcs / ≥ 100,000 pcs).
• Production Lead Times: Standard stock runs dispatch immediately. Mass customized runs or custom stamping operations take 15–20 days.
• Payment Protocols: T/T, L/C at sight, or Western Union/PayPal for initial evaluation samples.

Frequently Asked Questions

Q1: Can serrated flange nuts be reused safely in maintenance projects?

Yes, but with limitations. The locking mechanism relies on physical serration engagement. Upon torqueing down, the teeth grip the metal surface. If disassembled and reinstalled multiple times, the serrations will gradually flatten, diminishing the locking capacity. For critical structural re-assemblies, fresh nuts are advised.

Q2: Will the serrations cause surface rust by damaging coatings on the mating plate?

Yes, the teeth are deliberately designed to slightly score the mating surface to prevent backing off under vibration. If you are clamping painted or coated carbon steel plates, the serration will expose raw metal. For outdoor installations under severe humidity, we recommend pairing our stainless steel nuts with matching stainless steel substrates to eliminate galvanic corrosion risks.

Q3: Can these flange nuts replace nylon insert lock nuts (Nyloc nuts)?

Absolutely, and they are significantly superior for high-temperature applications. Nylon lock inserts degrade and lose retention capabilities above 120°C. Our full-metal stainless steel DIN6923 nuts reliably maintain functional structural ratings at operational temperature ceilings reaching up to 800°C.

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We support full product customization, sample testing, and flexible batch orders with strict quality assurance and on-time delivery.

Contact us now to get a free tailored quote and professional technical support!