A4-80 stainless steel socket screws wholesale supplier
XZ Fastener supplies A4-80 stainless steel socket screws for wholesale buyers, distributors, equipment maintenance teams, and project contractors that need higher-strength stainless fasteners in repeatable batches. These screws can be supplied as DIN 912 / ISO 4762 socket head cap screws, Allen head screws, or drawing-based socket fasteners according to order requirement. A4-80 is often selected for marine, outdoor, chemical equipment, and machinery applications where A4 corrosion resistance and stronger stainless performance are both important. Buyers can source stainless steel socket head cap screws with packing, labels, and inspection details confirmed before shipment.
Estándar
DIN 912 / ISO 4762; drawing-based socket screws
Fuerza
A4-80; A4-70 and A2-70 available upon request
Material
A4 / 316-family austenitic stainless steel
Finish
Plain, passivated, pickled and passivated, lubricated
Aplicación
Marine machinery, chemical equipment, precision assemblies
What Buyers Should Know Before Sourcing A4-80 Stainless Steel Socket Screws
Wholesale sourcing should focus on consistent sizes, repeatable thread quality, stable packing, clear labels, and correct material separation. A4-80 stainless steel socket screws should be specified by standard, head type, internal hex drive, diameter, length, thread pitch, property class, finish, carton quantity, and inspection requirement.
Confirm socket screw geometry
DIN 912 and ISO 4762 are common references for socket head cap screws, while low head, button head, countersunk head, and shoulder socket screws use different dimensions. Buyers can review related metric Allen head socket cap bolts when building a standard stock list.
Check A4-80 stock and production suitability
A4-80 is a higher stainless property class than A4-70. For larger diameters, special lengths, fine pitch threads, or custom designs, availability and mechanical requirements should be checked before confirming a wholesale program.
Plan packing for receiving and resale
Wholesale buyers often need inner boxes, barcode labels, carton marks, pallet separation, and consistent carton weight. These details help warehouses receive, sort, and resell the screws without unnecessary rework.
Common Purchasing Descriptions
Clear purchasing descriptions reduce confirmation time and help avoid wrong head style or wrong stainless property class. Typical wholesale wording includes:
- A4-80 stainless steel socket screws DIN 912, M6-M12 mixed sizes, plain finish, small box packing.
- ISO 4762 A4-80 stainless socket head cap screws, metric coarse thread, passivated finish.
- 316 stainless steel Allen head screws, A4-80, with barcode labels and pallet packing.
- A4-80 socket cap screws with matching stainless flat washers and spring lock washers.
- Custom socket screws according to drawing, A4 stainless steel, controlled socket depth and head height.
- Separate carbon steel fastener lines such as DIN 933 full thread hex bolts, Grade 8.8 carbon steel hex bolts, metric hex head bolts, zinc plated DIN 933 bolts, black oxide DIN 933 bolts, and hot dip galvanized DIN 933 bolts when the order includes both socket screws and external hex fasteners.
If stainless socket screws and carbon steel hex bolts are ordered together, list each product family separately with its own standard, size, material, grade, finish, packing unit, and label requirement.
Detailed Specifications Table
| Artículo | Especificación | Wholesale Purchasing Notes |
|---|---|---|
| Product name | A4-80 stainless steel socket screws | Also called A4-80 socket head cap screws or Allen head screws. |
| Common standards | DIN 912, ISO 4762, drawing-based socket screws | State the exact standard to control head and drive dimensions. |
| Diameter range | Common metric sizes such as M3-M24; other sizes reviewed by order | Wholesale programs often focus on high-moving sizes such as M4-M16. |
| Longitud | Standard lengths or custom lengths according to drawings | Specify full thread, partial thread, or exact thread length. |
| Thread | Metric coarse thread; fine pitch available upon request | Fine pitch should be clearly marked to avoid mixing with coarse thread stock. |
| Material | A4 / 316-family austenitic stainless steel | Final chemical composition follows the selected standard and purchase order. |
| Property class | A4-80 under ISO 3506 reference | A4-70 may be more economical where A4-80 is not required. |
| Finish | Plain, passivated, pickled and passivated, polished, lubricated | Use consistent finish names on labels, invoices, and packing lists. |
| Inspection | Head dimensions, socket gauge, thread gauge, visual appearance, material documents, mechanical reports upon request | Socket drive quality is important for tool fit and assembly control. |
| Wholesale packing | Bulk cartons, small boxes, bags, pallet packing, barcode labels, private labels | Carton weight and label content can be arranged according to order requirement. |
Material and Grade Explanation
A4 stainless steel is a molybdenum-bearing austenitic stainless group often selected for marine air, outdoor moisture, chloride exposure, chemical equipment, and other corrosive environments. A4-80 identifies a higher-strength stainless property class than A4-70, commonly associated with a minimum tensile strength level of 800 MPa under ISO 3506 reference conditions.
For distributors deciding which stainless socket screws to stock, the choice between A2-70, A4-70, and A4-80 should consider end-user applications, corrosion exposure, required clamp load, mating material, tightening method, and galling risk. XZ Fastener explains these differences in its guide to stainless steel bolt grades A2-70, A4-70, and A4-80.
A4-80 stainless socket screws are not automatic substitutes for alloy steel socket head cap screws. Alloy steel may offer higher strength, while A4-80 is chosen when stainless corrosion resistance is a key requirement.
Inspection can include head dimensions, socket drive quality, thread fit, surface condition, material documents, labels, and packing checks.
Surface Finish Selection Guide
A4-80 stainless steel socket screws are commonly supplied in plain stainless or passivated finish. Passivation helps remove free iron contamination and supports the natural stainless protective layer. Pickling and passivation may be discussed for cleaner stainless surfaces. Lubrication can be important for A4-80 socket screws because stainless threads may gall under high tightening pressure.
| Finish | Typical Wholesale Use | Buyer Note |
|---|---|---|
| Plain stainless | General machinery, repair stock, standard stainless socket screw programs | Common finish when no additional surface treatment is specified. |
| Passivated | Marine air, outdoor equipment, chemical machinery, clean stainless assemblies | Often requested where corrosion resistance and clean surface are important. |
| Pickled and passivated | More demanding stainless surface cleaning requirements | Confirm appearance expectation and acceptance criteria before production. |
| Lubricated | Higher clamp load, repeated assembly, galling-sensitive applications | Torque behavior changes when lubrication is used. |
| Carbon steel coatings | Zinc plated DIN 933 bolts, black oxide DIN 933 bolts, hot dip galvanized DIN 933 bolts | These descriptions normally apply to carbon steel hex bolts, not standard A4 stainless socket screws. |
For broader coating and finish comparisons, review the XZ Fastener fastener finish guide.
Manufacturing and Quality Control
Wholesale supply begins with order review of the standard, diameter, length, thread pitch, material grade, property class, finish, drive dimensions, packing method, label format, and inspection requirements. Depending on size and order details, A4-80 stainless socket screws can be produced by cold heading, thread rolling, machining, or combined processes.
Order confirmation
XZ Fastener checks the purchase description, drawing, head style, socket drive, thread length, material grade, finish, and document requirements. Buyers can browse wider fastener products when the program also includes washers, nuts, threaded rods, anchors, or hex bolts.
Production control
Common control points include head diameter, head height, socket depth, socket gauge fit, thread gauge fit, surface appearance, burr control, grade separation, and mixed-size packing prevention.
Custom wholesale programs
For modified heads, special lengths, non-standard thread, shoulder designs, private labels, or mixed fastener kits, XZ Fastener can review custom fasteners from drawings, samples, photos, or buyer packing specifications.
Aplicaciones
A4-80 stainless steel socket screws are practical wholesale items for distributors serving maintenance, fabrication, marine, outdoor equipment, and precision machinery markets.
- Marine equipment and coastal machinery
- Chemical processing equipment
- Stainless machine frames and guards
- Pump, valve, and instrument assemblies
- Food and beverage equipment supports
- Outdoor automation and electrical enclosures
- Precision mechanical assemblies
- Maintenance replacement parts for corrosive environments
For high-vibration, high-load, or safety-sensitive joints, the mating thread, tightening method, lubrication, and inspection documents should be reviewed before bulk shipment.
How to Get a Faster Quotation
A clear wholesale inquiry helps XZ Fastener quote A4-80 stainless steel socket screws accurately. Please provide:
- Size list, such as M5 x 16, M6 x 20, M8 x 30, M10 x 40.
- Standard or drawing, such as DIN 912, ISO 4762, low head, button head, countersunk head, or custom design.
- Material and grade, such as A4-80, A4-70, A2-70, or 316 stainless steel.
- Thread requirement, including coarse thread, fine pitch, full thread, or exact thread length.
- Finish requirement, such as plain, passivated, pickled and passivated, or lubricated.
- Quantity for each size and expected reorder frequency.
- Packaging requirement, including bulk carton, small box, bag, pallet, label, barcode, or private packing.
- Inspection requirements, such as material certificate, dimensional report, socket gauge check, or third-party inspection.
- Destination, delivery term, carton weight limit, pallet requirement, and shipping marks.
For a structured inquiry, use the request a quote page or contact XZ Fastener with drawings, photos, or a spreadsheet.
Preguntas frecuentes
Is A4-80 suitable for wholesale socket screw stock?
Yes. A4-80 stainless steel socket screws are useful stock items for buyers serving marine, outdoor, chemical equipment, maintenance, and precision machinery markets. The size range should match local demand and reorder patterns.
What does A4-80 mean?
A4 refers to the 316-family stainless group, and 80 refers to a higher stainless property class under ISO 3506 reference. It is commonly selected when corrosion resistance and stronger stainless performance are both needed.
Are DIN 912 and ISO 4762 socket screws the same?
They are closely related socket head cap screw standards, but buyers should state the exact standard required because dimensional details, document wording, and acceptance expectations may differ.
Can A4-80 socket screws replace alloy steel socket head cap screws?
Not automatically. Alloy steel socket screws may offer higher strength, while A4-80 stainless socket screws provide corrosion resistance. The load, environment, and assembly method should be checked before substitution.
Can small box or private label packing be supplied?
Yes. Small boxes, bulk cartons, bags, pallet packing, barcode labels, shipping marks, and private label packing can be discussed according to order requirement.
Can matching washers and nuts be packed together?
Yes. Stainless flat washers, spring washers, hex nuts, and assembled packing can be supplied according to the screw standard, thread, material, and packing requirement.
How can buyers reduce galling risk during assembly?
Buyers can consider lubrication, anti-seize compound, controlled tightening speed, clean mating threads, and correct mating material. This should be reviewed when high clamp load or repeated assembly is expected.
Send Your Wholesale A4-80 Stainless Socket Screw Inquiry
Send your size list, finish, quantity, packaging method, and inspection requirements. Include the standard or drawing number, head type, thread pitch, thread length, carton label needs, pallet requirements, destination, and whether washers or nuts are needed. XZ Fastener will review the details and prepare a quotation according to your order requirement.
English 
Español 
Tiếng Việt 
Русский 
العربية