Sourcing Flange Nuts from China: Manufacturer & Supplier Guide | Hebei Wuyang Fastener Co., Ltd
Use this page to evaluate China Flange Nuts Manufacturer, Factory & Suppliers from the perspective of new product line development. It brings together related products, practical selection checks, and buyer questions so your inquiry can be more specific from the beginning.
For a product development team, the most useful starting point is quality inspection points and documentation. Review the product matches, comparison notes, FAQs, and recent buyer-style feedback before sending final requirements.
Grade: 4.8, 8.8, 10.9, 12.9, Material: Q235, 35K, 45K, 40Cr, 35Crmo, 42Crmo, Surface Treatment: Blackened, Electrogalvanized, Dacromet, Hot-dip Galvanized, Galvanized, etc!
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Flange anti loosening nut is a type of nut with special structure and performance. The following is a detailed introduction for you: characteristic: Flange design: There is a wider flange at the bottom of the nut, which not only increases the contact area between the nut and the connecting piece, reduces the pressure per unit area, thereby reducing damage to the surface of the connecting piece, but also helps to improve the bearing capacity and stability of the nut. Excellent anti loosening performance: Through various anti loosening mechanisms, such as adding special coatings on threads, using deformed threads, embedding elastic materials (such as nylon rings), etc., it can effectively resist loosening caused by factors such as vibration, impact, and temperature changes, ensuring the reliability and safety of the connection. High strength: usually made of high-strength materials, capable of withstanding large loads.
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EXW PRICE : 720USD-910USD/TON Min.Order Quantity:2TONS PACKAGING:BAG/BOX WITH PALLET PORT:TIANJIN/QINGDAO/SHANGHAI/NINGBO DELIVERY:5-30DAYS ON QTY PAYMENT:T/T/LC Supply Ability:500 TON PER MONTH
Read MoreFlange Nuts Product Reference
The products listed on this page represent flange nut options available from Hebei Wuyang Fastener Co., Ltd, covering a range of sizes, materials, and surface treatments relevant to common B2B applications. Review each listing for specification details, and use the comparison notes to identify which options align with your project requirements before preparing your inquiry.
| Criterion | What To Check | Why It Matters | Buyer Tip |
|---|---|---|---|
| Material Certification | Request Mill Test Reports (MTR) for each batch | Confirms grade compliance (e.g., SS304, Grade 8) for new product line specs | Ask for chemical composition and mechanical property data per ASTM/ISO standard |
| Flange Bearing Surface | Verify serrated vs. smooth flange type matches application load | Serrated flanges resist loosening under vibration; wrong type causes field failures | Specify flange OD and serration pattern in your RFQ drawing or datasheet |
| Dimensional Accuracy | Confirm thread pitch, flange diameter, and height against DIN 6923 or ASME B18.2.2 | Out-of-tolerance parts cause assembly rejection and line stoppages | Request a first-article inspection (FAI) report before bulk shipment approval |
| Surface Treatment | Clarify coating type: zinc plated, hot-dip galvanized, or plain black oxide | Coating affects corrosion resistance and torque-tension relationship in assembly | State salt-spray test hours required (e.g., 96h or 500h) in your quality clause |
| Supplier Documentation | Obtain ISO 9001 certificate, inspection reports, and packing list format samples | Ensures traceability and simplifies customs clearance for import compliance | Ask if supplier can provide CoC (Certificate of Conformance) per your company template |
When comparing a China Flange Nuts Manufacturer, Factory & Suppliers, the most relevant factors for a product development team are application fit, specification scope, available documentation, and how clearly the supplier communicates quality controls. A useful inquiry goes beyond requesting a catalog — it describes the project context, target application, and any non-negotiable specification requirements.
This page is structured around quality review and RFQ preparation, so you can convert a general search into practical, supplier-ready questions before shortlisting begins.
Begin by defining exactly how flange nuts will function in your new product line. Identify which dimensions, materials, finishes, and load or torque requirements are fixed versus flexible. A clearly scoped requirement reduces back-and-forth and helps the supplier match products accurately from the first response.
When reviewing product options, compare thread size range, flange diameter, material grade, surface treatment, and structural type — serrated versus non-serrated, for example. If your project involves custom branding, modified dimensions, or specific packaging formats, include reference drawings, photos, or market destination notes in your initial communication.
Before requesting a quotation, prepare your estimated quantity range, delivery destination, required lead time, and internal approval steps. For development projects that may lead to repeat orders, also ask how the supplier handles first-article inspection, dimensional reports, and packaging consistency across production batches.
When comparing supplier responses, pay attention to quality inspection points and documentation: material certifications, dimensional inspection records, and surface treatment reports are standard reference points. A supplier that asks clarifying questions about your application is generally easier to evaluate than one that responds only with a general product list.
| Criteria | Importance | Description | Example Options |
|---|---|---|---|
| Material Grade Options | High | Range of steel grades available affects strength class suitability for different product line applications. | Carbon steel Grade 8, stainless A2/A4 |
| Dimensional Standard Compliance | High | Adherence to recognized standards ensures interchangeability and simplifies product development documentation. | DIN 6923, ISO 4161, ASME B18.2.2 |
| Custom Specification Capability | Medium | Ability to produce non-standard flange diameters, thread pitches, or coatings for unique new product requirements. | Custom flange OD, fine-pitch thread |
| Quality Documentation Provided | High | Availability of mill certs, inspection reports, and process records supports internal QA review and supplier shortlisting. | Material cert, dimensional report |
| Supplier Communication Responsiveness | Medium | Speed and clarity of RFQ responses and technical query handling impacts project development timelines. | Dedicated export sales contact |
Recommended Products
The featured flange nuts below reflect frequently requested configurations from buyers in product development and procurement roles. Each listing includes key specification details to support shortlisting and RFQ preparation. If a listed product is close but not an exact match, note the differences and include them in your inquiry — custom or modified options may be available.
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The buyer feedback below reflects experiences from teams in similar sourcing situations — shortlisting related products, checking specifications, or planning a custom project. Use these notes as reference points when forming your own evaluation criteria.
This tag page helped me filter relevant flange nut variants quickly before reaching out to the China supplier for a formal inquiry.
I appreciated how the flange nuts section organized key technical points, making it easier to frame my questions around thread size and material grade.
Before sending my inquiry to this China flange nuts manufacturer, I used the page to confirm which product details I needed to specify upfront.
The grouped flange nut listings made it straightforward to compare factory options and identify which supplier categories matched our project requirements.
Key inspection points include dimensional tolerance per ISO or DIN standards, flange bearing surface flatness, thread pitch accuracy, surface coating adhesion, and hardness testing results. Request full material mill certificates and inspection reports before approving samples.
Request material test reports, dimensional inspection sheets, process control records, and product drawings with tolerances. These documents help your team verify compliance with design specifications and streamline internal approval workflows.
Yes, custom flange diameter, thread size, pitch, and surface treatments such as zinc plating, hot-dip galvanizing, or black oxide can typically be specified. Provide your engineering drawings during RFQ for accurate feasibility and pricing review.
Include target thread size range, material grade, surface finish, annual volume estimate, packaging requirements, and destination port. Attaching reference standards such as DIN 6923 or ISO 4161 reduces back-and-forth and improves quote accuracy.
Reliable suppliers should offer root cause analysis reports, corrective action plans, and replacement or credit arrangements. Clarify complaint response timelines and designated contact persons before placing initial bulk orders.
Share your application load requirements, operating temperature range, and exposure environment with the supplier. Request material grade specifications and coating performance data to cross-check against your product design criteria before finalizing selection.
Use the inquiry form to submit your project details to Hebei Wuyang Fastener Co., Ltd. Include your application context, required specifications, quantity range, and any documentation or inspection requirements. A specific inquiry helps the team respond with relevant product matches and accurate lead time estimates.
