stainless steel flange nuts exporter for DIN 6923 and Custom Metric Orders
XZ Fastener exports stainless steel flange nuts for machinery, construction hardware, automotive brackets, electrical enclosures, marine equipment, and outdoor assemblies. Orders can be supplied in DIN 6923, ISO-style, ASME inch, serrated, or non-serrated designs according to drawing and application requirement. Buyers can source stainless flange nuts together with bolts, washers, anchors, and related fastener products, helping simplify shipment coordination, carton labels, inspection documents, and mixed-size export packaging for distributors and project procurement teams.
Quick Specs
What Buyers Should Know Before Sourcing Stainless Steel Flange Nuts
Flange nuts combine a hex nut body with an integrated bearing face. This design spreads clamping load over a wider surface and can reduce the need for a separate washer in many assemblies. Serrated flange nuts improve resistance to loosening on suitable mating surfaces, while non-serrated flange nuts are preferred when the contact face must remain smoother or when the mating component has a sensitive coating.
For metric purchasing, many buyers reference DIN 6923 flange nuts. When stainless nuts are ordered with stainless bolts and washers, review the full assembly to reduce galling risk, avoid thread mismatch, and confirm practical tightening conditions.
Export Order Checks
- Confirm serrated or non-serrated flange face before quotation.
- State standard, size, pitch, material grade, and property class clearly.
- Check flange diameter, height, and across-flat dimension against the assembly space.
- Confirm carton weight limit, pallet size, shipping mark, barcode, and label format.
- Specify whether material documents, inspection reports, or pre-shipment photos are required.
Common Purchasing Descriptions
Clear purchasing descriptions help exporters quote the correct size range, packaging, inspection, and delivery terms from the first round. Buyers commonly describe stainless steel flange nut requirements in these formats:
- DIN 6923 A2-70 stainless steel serrated flange nuts, M6-M20, metric coarse thread, plain/passivated.
- A4-80 stainless steel hex flange nuts, M8, M10, M12, M16, export carton and pallet packaging.
- Non-serrated stainless steel flange nuts according to drawing, 304 material, smooth bearing face.
- 316 stainless steel flange lock nuts for outdoor equipment, with buyer label and inspection report.
- Mixed fastener shipment with stainless flange nuts, flat washers, spring washers, and metric hex head bolts.
- Distributor stock order including DIN 933 full thread hex bolts, Grade 8.8 carbon steel hex bolts, zinc plated DIN 933 bolts, black oxide DIN 933 bolts, and hot dip galvanized DIN 933 bolts.
For buyers building a matched assembly list, XZ Fastener can also discuss flange bolts and nuts so thread fit, finish compatibility, and packing labels are aligned before shipment.
Detailed Specifications Table
| Specification Item | Typical Options | Purchasing Notes |
|---|---|---|
| Тип продукта | Hex flange nut, serrated flange nut, non-serrated flange nut, flange lock nut | Send a drawing when the flange OD, serration profile, height, or bearing face differs from standard dimensions. |
| Standard Reference | DIN 6923, ISO 4161 style, ASME B18.2.2 inch style, custom drawing | Standard name should be supported by size, pitch, grade, material, and finish details. |
| Диапазон размеров | Common metric sizes M4-M24; larger metric or inch sizes upon request | MOQ and lead time may vary for uncommon sizes, fine threads, or special tooling. |
| Thread | Metric coarse, metric fine, UNC, UNF | State pitch clearly, especially for M10, M12, and inch-thread export orders. |
| Материал | 304/A2 stainless steel, 316/A4 stainless steel, 316L, carbon steel alternatives | A4/316 is preferred for chloride, coastal, marine, and chemical environments. |
| Property Class | A2-50, A2-70, A4-70, A4-80; carbon steel class 8 or class 10 alternatives | For critical assemblies, confirm mechanical test document requirements before ordering. |
| Finish | Plain, passivated, bright cleaned, lubricated, waxed, or special finish | Lubrication can help reduce stainless-on-stainless galling during tightening. |
| Inspection | Dimension check, thread Go/No-Go gauge, visual inspection, hardness or tensile test as required | Inspection reports can be supplied according to order requirement. |
| Export Packaging | Bulk carton, small box, bag, carton with pallet, buyer label, neutral label | Include carton weight limit, pallet type, shipping mark, barcode, and warehouse receiving rules. |
| Documents | Commercial invoice, packing list, B/L, CO, inspection report, material document upon request | Confirm document format early for customs clearance and project file requirements. |
Material and Grade Explanation
Нержавеющая сталь A2 / 304 is widely used for general machinery, indoor equipment, electrical cabinets, hardware kits, and many construction applications. It offers practical corrosion resistance and good availability across standard metric sizes.
Нержавеющая сталь А4 / 316 provides better resistance in chloride, coastal, marine, and chemical environments. It is often selected for outdoor equipment, water treatment systems, marine hardware, and export projects where corrosion exposure is a key concern.
A2-70, A4-70, and A4-80 indicate stainless fastener strength classes. If the nut is paired with stainless bolts or washers, buyers should check assembly compatibility. This guide to matching stainless steel bolts, nuts, and washers is useful when preparing a complete fastener list.
Custom Material Requests
When standard flange nuts do not meet the application, XZ Fastener can review drawings, samples, and assembly conditions for custom fasteners. Requests may include altered flange diameter, fine thread, non-standard height, special bearing face, specific surface roughness, or buyer-defined packaging.
Surface Finish Selection Guide
Stainless steel flange nuts are often exported in plain or passivated condition because corrosion resistance mainly comes from the stainless material. Finish selection should consider the mating bolt, storage environment, assembly method, and receiving standard in the destination market.
| Finish Option | Suitable Use | Buyer Consideration |
|---|---|---|
| Plain Stainless | General stainless assemblies, indoor machinery, clean appearance | Common and practical for many export orders; confirm cleaning requirement if appearance is important. |
| Passivated Stainless | Outdoor, wet, marine-adjacent, and corrosion-sensitive assemblies | Helps improve surface condition after manufacturing and handling. |
| Lubricated or Waxed | Stainless-on-stainless tightening where galling risk must be reduced | Confirm whether lubricant affects torque values, cleanliness, or packing requirements. |
| Zinc Plating | Carbon steel flange nuts or mixed carbon steel bolt packages | Common for distributor stock; check plating color and salt spray requirement. |
| Hot Dip Galvanizing | Carbon steel outdoor structures and heavy-duty assemblies | Thread fit must be controlled because coating thickness affects assembly. |
| Black Oxide | Carbon steel indoor equipment, dark appearance, light oil protection | Not suitable as the main protection for severe outdoor corrosion exposure. |
For full assembly sourcing, this surface finish selection guide explains how nut, washer, and bolt finishes should be considered together.
Manufacturing and Quality Control
Common stainless steel flange nut sizes are typically produced by cold forming, followed by tapping, cleaning, inspection, and packing. Larger sizes, special stainless grades, or non-standard geometry may require hot forging, machining, or a combined process. For export orders, production planning also considers carton weight, pallet loading, label content, and document requirements.
Quality control can include raw material verification, dimensional inspection, thread Go/No-Go gauge checking, flange diameter measurement, across-flat inspection, visual surface checks, and sampling before packing. Buyers preparing supplier assessments can also review this factory audit guide for fastener manufacturing processes.
Inspection Points Before Shipment
- Nut runs smoothly on the matching bolt without thread damage.
- Flange diameter, total height, and across-flat size match the approved standard or drawing.
- Serration shape is clear when serrated flange nuts are ordered.
- Surface is free from serious burrs, rust contamination, or mixed-material packing.
- Carton labels match size, material, finish, batch, and quantity.
Additional checks such as thread gauge records, hardness testing, or material documents can be discussed according to order requirement. Related topics are available in the technical guides section.
Приложения
Machinery and Equipment
Used on machine frames, guards, brackets, guide rails, covers, and maintenance kits where an integrated bearing face simplifies assembly.
Automotive and Transport
Suitable for brackets, clamps, body hardware, and service parts where vibration resistance and repeatable assembly are important.
Construction Hardware
Applied in metal frames, rail supports, facade brackets, solar mounting accessories, and general structural hardware.
Marine and Outdoor Use
A4/316 stainless flange nuts are preferred where moisture, salt, or aggressive outdoor exposure must be considered.
Electrical Cabinets
Used for panels, mounting plates, grounding brackets, and stainless cabinet hardware requiring clean assembly.
Distributor Stock
Common sizes can be packed in buyer-specified cartons, bags, labels, and pallets for warehouse receiving and resale.
How to Get a Faster Quotation
A complete request helps the exporter quote the correct product, inspection level, packaging, and shipment terms without repeated clarification.
- Send the standard or drawing: DIN 6923, ISO style, ASME style, or custom drawing.
- List the size and pitch: for example, M6, M8, M10, M12, M16 or UNC/UNF inch thread.
- Confirm stainless grade and property class: A2-70, A4-70, A4-80, 304, 316, or 316L.
- State serrated or non-serrated flange face.
- Provide quantity by size and expected shipment schedule.
- Share finish, lubrication, passivation, or cleaning requirement.
- Specify packaging: bulk carton, small box, bag, pallet, barcode, neutral label, or buyer label.
- Include inspection requirements, such as thread gauge, dimensional report, material document, pre-shipment photos, or third-party inspection.
- Confirm trade term and documents. For export planning, this guide to fastener shipping documents explains common invoice, packing list, B/L, and CO requirements.
Часто задаваемые вопросы
Can stainless steel flange nuts be exported according to DIN 6923?
Yes. Stainless steel flange nuts can be supplied according to DIN 6923 dimensions or adjusted to a buyer drawing. Please confirm size, pitch, material, serrated or non-serrated underside, and required inspection documents.
Should I choose A2 or A4 stainless steel for export orders?
A2/304 is suitable for many general industrial and indoor uses. A4/316 is recommended for marine, coastal, chemical, wet, or chloride-exposed environments where stronger corrosion resistance is needed.
What is the difference between serrated and non-serrated flange nuts?
Serrated flange nuts have teeth under the flange to help resist loosening on suitable surfaces. Non-serrated flange nuts provide a smoother bearing face and are preferred when the mating surface should not be marked.
Can flange nuts be shipped with matching bolts and washers?
Yes. Buyers often request flange nuts together with washers and bolts, including metric hex head bolts and DIN 933 full thread hex bolts. Providing the full size list helps confirm thread fit, material pairing, finish, and export packaging.
Can XZ Fastener supply custom stainless steel flange nuts?
Custom stainless steel flange nuts can be reviewed according to drawing, sample, or application requirement. Details such as flange diameter, height, thread pitch, serration profile, material, and inspection level should be included.
What packaging details should importers provide?
Importers should provide carton weight limits, inner bag or small box requirements, pallet type, shipping marks, barcode labels, neutral label or buyer label needs, and any warehouse receiving instructions.
Send Your Stainless Steel Flange Nut Export Inquiry
For a faster quotation, send your size list, finish, quantity, packaging, and inspection requirements. If the flange nut is part of a bolt-and-washer assembly, include the matching bolt standard, grade, material, coating, and packing details so thread fit and export documents can be reviewed together.
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