Fournisseur en gros de boulons hexagonaux en acier inoxydable A4-70
XZ Fastener supplies A4-70 stainless steel hex bolts for wholesale buyers, distributors, maintenance companies, and project contractors that need corrosion-resistant metric hex head bolts in repeatable batches. Orders can be arranged as DIN 933 full thread hex bolts, ISO 4017 bolts, DIN 931 partial thread bolts, or drawing-based stainless fasteners according to order requirement. A4-70 is suitable for many outdoor, coastal, marine, chemical equipment, and machinery assemblies where 316-family stainless steel is preferred. Buyers can source boulons hexagonaux en acier inoxydable with size lists, packing labels, matching nuts and washers, and inspection documents confirmed before shipment.
Norme
DIN 933 / ISO 4017 filetage complet ; DIN 931 / ISO 4014 en option
Force
A4-70 ; A4-80 disponible sur demande
Matériel
A4 / 316-family austenitic stainless steel
Terminer
Plaine, passivée, décapée et passivée, lubrifiée
Demande
Marine fittings, outdoor structures, equipment, chemical facilities
Ce que les acheteurs doivent savoir avant de se procurer des boulons hexagonaux en acier inoxydable A4-70
Wholesale buyers usually care about repeatable size coverage, stable packing, clear labels, mixed-carton control, and reorder consistency. A4-70 stainless steel hex bolts should be specified by standard, diameter, length, thread type, material group, property class, finish, quantity per size, carton weight, pallet method, and inspection requirement.
Confirm the product range
DIN 933 and ISO 4017 are normally used for full thread hex bolts, while DIN 931 and ISO 4014 are used for partial thread hex bolts. For mixed wholesale programs, XZ Fastener can also supply Boulons à tête hexagonale A2 et A4 across multiple sizes.
Separate wholesale stock from project supply
Distributor stock orders often need standard sizes and clear labels, while project supply may require documents, third-party inspection, or special packing. The quotation should match the way the bolts will be received, stored, and resold.
Compare stainless and carbon steel correctly
A4-70 is selected for corrosion resistance. If the buyer needs higher strength and lower cost for dry structural use, Grade 8.8 carbon steel hex bolts may be reviewed separately, with a suitable surface finish.
Descriptions d'achat courantes
Accurate descriptions reduce confirmation time and help the supplier prepare the correct wholesale packing. Common purchasing descriptions include:
- A4-70 stainless steel hex bolts DIN 933 full thread, M6-M20 mixed sizes, plain finish, bulk carton packing.
- Boulons à tête hexagonale métrique 316 en acier inoxydable ISO 4017, A4-70, passivé, avec écrous et rondelles assortis.
- DIN 931 partial thread A4-70 hex bolts for outdoor equipment and maintenance stock.
- Stainless steel hex cap screws M8 x 25 to M16 x 100, A4-70, carton label and pallet packing required.
- Carbon steel alternatives such as Grade 8.8 carbon steel hex bolts, zinc plated DIN 933 bolts, black oxide DIN 933 bolts, and hot dip galvanized DIN 933 bolts from the Gamme de boulons hexagonaux à filetage complet DIN 933.
For mixed-material wholesale orders, each item should be listed separately by standard, size, material, grade, finish, packing unit, and label requirement.
Tableau des spécifications détaillées
| Article | Spécification | Notes d'achat en gros |
|---|---|---|
| Nom du produit | Boulons hexagonaux en acier inoxydable A4-70 | Can be supplied as bolts only or packed with matching nuts and washers. |
| Normes | DIN 933, ISO 4017, DIN 931, ISO 4014, pièces basées sur des dessins | Confirm full thread or partial thread for every size. |
| Plage de diamètre | Common metric sizes such as M3-M36; other sizes reviewed by order | Wholesale programs often focus on high-moving sizes such as M6-M20. |
| Longueur | Longueurs standards ou longueurs sur mesure selon plans | Utilisez ceci guide de longueur de filetage de boulon when preparing full thread and partial thread lists. |
| Sujet | Filetage métrique grossier ; emplacement fin disponible sur demande | Fine pitch must be clearly marked to avoid mixing with coarse thread stock. |
| Matériel | A4 / 316-family austenitic stainless steel | Les documents matériels peuvent être discutés avant la confirmation de la commande. |
| Classe de propriété | A4-70 sous la référence ISO 3506 | A4-80 can be reviewed when higher stainless strength is required. |
| Terminer | Plaine, passivée, décapée et passivée, polie, lubrifiée | Wholesale stock should keep finish names consistent on labels and invoices. |
| Contrôle | Dimensions, calibres de filetage, aspect visuel, documents matières, rapports mécaniques sur demande | Inspection scope should be stated before production starts. |
| Emballage en gros | Bulk cartons, small boxes, bags, inner boxes, pallet packing, barcode labels, private labels | Carton weight and label content can be arranged according to order requirement. |
Explication du matériau et de la qualité
A4 stainless steel is a molybdenum-bearing austenitic stainless group commonly selected where moisture, chloride exposure, marine air, or chemical environments may shorten the service life of carbon steel fasteners. A4-70 indicates both the stainless group and the property class, commonly associated with a minimum tensile strength level of 700 MPa under ISO 3506 reference conditions.
Wholesale buyers often compare A2 and A4 when deciding stock range. A2 can be suitable for many indoor and mild outdoor uses, while A4 is usually preferred for coastal, marine, wastewater, and chemical equipment applications. For deeper material comparison, review XZ Fastener’s guide to Fixations en acier inoxydable A2 vs A4.
A4-70 should not be described as a direct replacement for Grade 8.8 carbon steel hex bolts without checking load requirements. Stainless A4-70 offers corrosion resistance, while Grade 8.8 carbon steel offers higher strength and is often combined with zinc plating, black oxide, or hot dip galvanizing.
Wholesale orders can be checked for dimensions, thread fit, surface condition, quantity, labels, and packing requirements before shipment.
Guide de sélection de finition de surface
Most A4-70 stainless steel hex bolts are ordered in plain stainless or passivated finish. Passivation helps remove free iron contamination from the surface and supports the natural stainless protective layer. Pickled and passivated finish may be requested when stronger cleaning is needed. Lubrication or anti-seize preparation can be discussed when galling risk is important.
| Terminer | Utilisation typique en gros | Note de l'acheteur |
|---|---|---|
| Inox uni | General distributor stock, machinery repair, indoor and mild outdoor use | Common finish for standard stainless wholesale orders. |
| Passivé | Marine air, outdoor equipment, chemical equipment, clean stainless assemblies | Often requested where corrosion resistance and clean appearance are both important. |
| Décapé et passivé | Demanding surface cleaning requirements | Confirm appearance standard and acceptance criteria in advance. |
| Lubrifié | Assemblies with repeated tightening or galling concern | Torque values may change when lubrication is used. |
| Revêtements en acier au carbone | Boulons DIN 933 zingués, boulons 933 oxyde noir, boulons DIN 933 galvanisés à chaud | These are usually selected for carbon steel fasteners rather than A4 stainless steel bolts. |
For broader coating comparison, see XZ Fastener’s guide de finition des fixations.
Fabrication et contrôle qualité
Wholesale supply starts with a confirmed size list, standard, material grade, finish, quantity per size, packing unit, label format, and inspection requirement. Depending on diameter and length, A4-70 stainless steel hex bolts can be produced by cold heading, hot forging, machining, thread rolling, or thread cutting.
Révision de la commande
XZ Fastener checks the standard, size, thread, finish, tolerance, quantity, carton weight, pallet method, and label requirement. Buyers can also browse broader produits de fixation pour assortir les écrous, rondelles, tiges filetées, chevilles et vis.
Contrôle de production
Control points can include head dimensions, across-flat size, thread length, thread gauge fit, surface appearance, burr control, material separation, and mixed-size packing prevention.
Custom wholesale programs
For private labels, special kits, mixed fastener boxes, or non-standard dimensions, XZ Fastener can review attaches personnalisées from drawings, samples, or buyer packing specifications.
Applications
A4-70 stainless steel hex bolts are practical wholesale items for distributors serving maintenance, fabrication, marine, outdoor equipment, and industrial repair markets.
- Équipements marins et installations côtières
- Équipement de traitement chimique
- Assemblages extérieurs en acier et en aluminium
- Systèmes de traitement des eaux usées
- Matériel de support de pompe, de vanne et de tuyau
- Structures de soutien à la restauration et aux boissons
- Solar mounting and exposed equipment frames
- Maintenance, repair, and distributor stock programs
For submerged seawater, strong chloride chemicals, high-temperature equipment, or critical load-bearing joints, engineering review is recommended before selecting A4-70.
Comment obtenir un devis plus rapide
A clear wholesale inquiry helps XZ Fastener quote the correct A4-70 stainless steel hex bolts and packing method without repeated clarification. Please provide:
- Liste des tailles, telles que M6 x 20, M8 x 30, M10 x 50, M12 x 80.
- Standard, tel que DIN 933, ISO 4017, DIN 931, ISO 4014 ou numéro de dessin.
- Matériau et qualité, tels que l'acier inoxydable A4-70, A4-80, A2-70 ou 316.
- Exigence de finition, telle que nature, passivée, décapée et passivée, ou lubrifiée.
- Quantity per size and expected reorder frequency.
- Packaging requirement, including bulk carton, small box, bag, pallet, label, barcode, or private brand packing.
- Exigences d'inspection, telles que le certificat de matériau, le rapport dimensionnel, l'inspection visuelle ou l'inspection par un tiers.
- Destination, delivery term, and any carton or pallet weight limits.
For a structured wholesale inquiry, use the demander un devis page and attach a spreadsheet if the order includes many sizes.
FAQ
Is A4-70 stainless steel suitable for wholesale distributor stock?
Yes. A4-70 stainless steel hex bolts are practical stock items for buyers serving marine, outdoor, chemical equipment, maintenance, and machinery markets. The size range should match the buyer’s local demand and reorder pattern.
Quelle est la différence entre DIN 933 et DIN 931 ?
DIN 933 usually refers to full thread hex bolts, while DIN 931 usually refers to partial thread hex bolts. Wholesale buyers should separate these standards clearly in stock lists and labels.
Can A4-70 stainless bolts replace Grade 8.8 carbon steel hex bolts?
Not automatically. A4-70 is selected mainly for corrosion resistance, while Grade 8.8 carbon steel hex bolts are selected for higher strength. Load, environment, and assembly requirements should be checked before substitution.
Can XZ Fastener supply small box or private label packing?
Small boxes, bulk cartons, bags, pallet packing, barcode labels, shipping marks, and private label packing can be discussed according to order requirement.
Can matching nuts and washers be packed together?
Yes. Matching stainless hex nuts, flat washers, spring washers, and assembly kits can be supplied according to the bolt standard, thread, material, and packing requirement.
What documents can be requested for wholesale shipments?
Les acheteurs peuvent demander des certificats d'essai de matériaux, des rapports d'inspection dimensionnelle, des listes de colisage, des dossiers d'inspection visuelle et d'autres documents selon les exigences de la commande. Les besoins en documents doivent être confirmés avant la production.
Can mixed sizes be shipped on one pallet?
Yes, mixed-size pallet packing can be arranged. Buyers should provide carton label format, size separation requirements, pallet weight limits, and receiving instructions to reduce sorting work after delivery.
Send Your Wholesale A4-70 Stainless Hex Bolt Inquiry
Send your size list, finish, quantity, packaging method, and inspection requirements. Include the standard or drawing number, carton label needs, pallet requirements, destination, and whether matching nuts and washers are needed. XZ Fastener will review the details and prepare a quotation according to your order requirement.
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