العربية 
English 
Español 
Tiếng Việt 
Русский High Strength Socket Screws for Industrial Assembly
Grade 12.9 socket head cap screws factory
XZ Fastener manufactures Grade 12.9 socket head cap screws for machinery, molds, dies, tooling fixtures, automation equipment, precision frames, and high clamp load assemblies. These high strength alloy steel screws are commonly supplied to ISO 4762 or DIN 912 dimensional requirements, with metric coarse and fine thread options available according to order requirement. Black oxide, plain oiled, phosphate, zinc flake, and selected protective finishes can be reviewed. Factory orders can be packed by size, item code, carton, pallet, or assembly kit for efficient installation and warehouse control.
Quick Specs
What Buyers Should Know Before Sourcing Grade 12.9 Socket Head Cap Screws
Grade 12.9 socket head cap screws are selected when an assembly needs high tensile strength, compact head design, and secure internal hex drive installation. Buyers comparing fastener products should confirm standard, diameter, pitch, length, thread length, socket size, head height, material, heat treatment, and finish before placing a factory order.
Because Grade 12.9 screws work in demanding assemblies, coating and hydrogen embrittlement risk should be reviewed carefully, especially when electroplated finishes are requested. For drawing-based head dimensions, special lengths, non-standard thread lengths, or modified drive details, related custom fasteners can be reviewed together with the socket screw requirement.
Factory Order Checklist
- Confirm ISO 4762, DIN 912, or drawing-based dimensions.
- Send diameter, pitch, length, and full or partial thread requirement.
- Specify Grade 12.9 material and heat treatment expectations.
- Check finish choice against corrosion, friction, and embrittlement concerns.
- Provide packing labels, carton weight, pallet plan, and inspection requirements.
Common Purchasing Descriptions
- Grade 12.9 socket head cap screws, alloy steel, black oxide, metric coarse thread.
- ISO 4762 socket head cap screws, property class 12.9, plain oiled finish.
- DIN 912 Grade 12.9 socket screws, partial thread, carton packing.
- Grade 12.9 cap screws with zinc flake finish for industrial equipment assembly.
- Metric socket head cap screws sorted by item code, length, finish, and pallet label.
For mixed factory purchasing lists, Grade 12.9 socket screws may be ordered together with 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. Buyers can also combine these with standard fasteners for a more complete assembly supply plan.
Detailed Specifications Table
| Specification Item | Typical Options | Buyer Notes |
|---|---|---|
| Product Name | Grade 12.9 socket head cap screws | High strength metric socket screws for machinery, tooling, and precision assemblies. |
| Dimensional Standard | ISO 4762, DIN 912, or buyer drawing | Confirm head diameter, head height, socket size, and thread length before order. |
| Thread | Metric coarse or fine thread, full or partial thread | Send diameter, pitch, length, and thread length requirement. |
| Strength Class | Grade 12.9 / property class 12.9 | Used where higher tensile strength and clamp load are required. |
| مادة | Heat treated alloy steel | Material and heat treatment can be reviewed according to order requirement. |
| Finish | Black oxide, plain oiled, phosphate, zinc flake, selected coatings | For plated finishes, process control and embrittlement risk should be discussed. |
| Inspection | Dimension check, thread gauge, hardness, tensile test, surface inspection | Reports can be arranged according to purchase order and project requirement. |
| Packing | Bulk carton, small box, bag, wooden case, pallet, or assembly kit | Labels, barcodes, carton weight, and pallet layout are available upon request. |
Final product specification should be confirmed by purchase order, drawing, sample, or project requirement before production arrangement.
Material and Grade Explanation
Grade 12.9 socket head cap screws are typically manufactured from heat treated alloy steel to reach high tensile strength and hardness. The grade is commonly selected for tooling, dies, molds, clamping plates, machine slides, and compact assemblies where a hex head bolt is not suitable due to space or access limitations.
Compared with general carbon steel fasteners, Grade 12.9 screws require tighter control of material, heat treatment, thread quality, and finish process. Buyers handling several metric specifications can also review the DIN and ISO fastener standards guide when comparing ISO 4762, DIN 912, and other related product descriptions.
Grade 12.9 Selection Notes
- Suitable for high strength metric assemblies with controlled tightening.
- Often used where socket drive access is preferred over external hex drive.
- Requires correct mating thread engagement and suitable washer or seat surface.
- Finish choice should be reviewed carefully for friction and embrittlement risk.
Surface Finish Selection Guide
Common Factory Finishes
Black oxide with oil is widely used for Grade 12.9 socket head cap screws because it provides a dark industrial appearance and light temporary protection. Plain oiled and phosphate finishes can also be supplied when buyers need controlled assembly behavior or further processing according to their application.
Corrosion-Oriented Finishes
For higher corrosion resistance, zinc flake or selected coating systems may be reviewed. Electroplated finishes on Grade 12.9 screws should be discussed carefully due to hydrogen embrittlement concerns. Related coated fasteners can be quoted together when a project needs consistent appearance and corrosion planning across multiple items.
Manufacturing and Quality Control
Grade 12.9 socket head cap screws are produced through wire preparation, cold forming or machining where applicable, thread rolling, heat treatment, surface finishing, inspection, and packing. Factory control focuses on strength, dimensional accuracy, socket drive quality, thread fit, surface condition, and batch traceability according to order requirement.
For orders that include related industrial bolts, washers, and nuts, XZ Fastener can help organize item-code sorting, mixed cartons, pallet labels, and inspection documents. This helps buyers manage machinery assembly, tooling maintenance, and warehouse replenishment with fewer handling errors.
Typical Inspection Points
- Head diameter, head height, socket depth, and socket gauge check.
- Thread gauge inspection for go and no-go fit.
- Hardness and mechanical property review according to order requirement.
- Surface finish appearance and coating consistency inspection.
- Packing quantity, carton label, and pallet plan verification before shipment.
تطبيقات
- Molds, dies, tooling plates, and fixture clamping systems.
- Automation equipment, machinery frames, guides, and precision assemblies.
- Hydraulic equipment, presses, machine tools, and maintenance programs.
- Distributor stock, MRO kits, and factory replenishment orders.
Grade 12.9 socket head cap screws are often used where high clamp force and compact head clearance are required. For assemblies that also need washers, XZ Fastener can review matching flat washers and related parts according to the equipment drawing and installation environment.
How to Get a Faster Quotation
To receive a clear quotation for Grade 12.9 socket head cap screws, send the standard or drawing, diameter, pitch, length, thread length, finish, quantity, packing method, destination, and inspection requirements. If the screws will be used in tooling or high load assemblies, include the application notes and any required test reports.
For factory orders, contact XZ Fastener with a structured size list and preferred packing details. Information such as carton weight, label format, pallet size, coating requirement, and inspection documents helps confirm production and shipment planning more efficiently.
أسئلة متكررة
What standard is commonly used for Grade 12.9 socket head cap screws?
ISO 4762 and DIN 912 are commonly used for metric socket head cap screws. Buyers should confirm the required standard or provide a drawing when head dimensions, socket size, or thread length are critical.
What material is used for Grade 12.9 socket head cap screws?
Grade 12.9 socket head cap screws are typically made from heat treated alloy steel. The exact material and process can be reviewed according to order requirement and project specification.
Which finish is recommended for Grade 12.9 socket screws?
Black oxide with oil is common for Grade 12.9 socket screws. Zinc flake, phosphate, plain oiled, and selected coatings can be reviewed, while electroplating should be discussed carefully due to embrittlement concerns.
Can Grade 12.9 socket head cap screws be supplied in fine thread?
Metric coarse and fine thread options can be supplied according to order requirement. Please provide diameter, pitch, length, and thread length when requesting a quotation.
What inspection documents can be requested?
Dimension inspection, thread gauge check, hardness report, mechanical property report, coating inspection, and packing verification can be arranged according to purchase order requirement.
How should factory orders be packed?
Factory orders can be packed in bulk cartons, small boxes, bags, wooden cases, or pallets. Item-code labels, mixed-size sorting, barcodes, carton weight limits, and pallet plans are available upon request.
Send Your Grade 12.9 Socket Screw Inquiry
For a faster quotation, send your size list, standard or drawing, finish, quantity, packaging method, delivery destination, and inspection requirements. XZ Fastener can review factory order details, coating selection, carton labels, pallet plan, mechanical testing, and any drawing-based requirements before production or shipment arrangement.