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العربية High Strength Alloy Steel Bolts for Export Supply
Class 12.9 alloy steel bolts exporter
XZ Fastener exports Class 12.9 alloy steel bolts for demanding machinery, molds, dies, tooling fixtures, automation equipment, precision frames, and high clamp load assemblies. These high strength metric bolts are selected where tensile strength, thread accuracy, and controlled tightening are critical. Orders can be reviewed to ISO 898-1 mechanical property requirements and supplied under suitable dimensional standards such as ISO 4762, DIN 912, DIN 931, DIN 933, DIN 6921, or buyer drawings. Black oxide, phosphate, plain oiled, zinc flake, and selected coatings can be reviewed for export packing, inspection, and application requirements.
Quick Specs
What Buyers Should Know Before Sourcing Class 12.9 Alloy Steel Bolts
Class 12.9 alloy steel bolts are selected when an assembly needs high tensile strength, precise thread fit, and reliable tightening control. When comparing fastener products, buyers should confirm the dimensional standard, diameter, pitch, length, thread length, head style, drive type, material, heat treatment, finish, export packing, and inspection requirements.
Because Class 12.9 bolts are high strength parts, finish selection must be reviewed carefully. Electroplated finishes may require process control due to hydrogen embrittlement concerns, while zinc flake, black oxide, phosphate, or plain oiled finishes may be more suitable for many industrial export orders. Drawing-based dimensions or special threads can be reviewed as custom fasteners.
Export Order Checklist
- Confirm bolt type, head style, drive type, and dimensional standard.
- Send diameter, pitch, length, and full or partial thread requirement.
- Specify Class 12.9 mechanical property requirement.
- Review finish choice for friction, corrosion, storage, and embrittlement risk.
- Provide packing method, carton weight, pallet plan, shipping marks, and inspection requirements.
Common Purchasing Descriptions
- Class 12.9 alloy steel bolts, black oxide, metric coarse thread.
- Class 12.9 socket head cap screws, ISO 4762, plain oiled finish.
- Class 12.9 hex bolts, partial thread, phosphate finish, export carton packing.
- Class 12.9 flange bolts, zinc flake coating, export pallet packing.
- High strength metric alloy steel bolts sorted by size, finish, item code, and pallet label.
For mixed export purchasing lists, Class 12.9 alloy steel bolts 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 combine these with standard fasteners for broader assembly supply.
Detailed Specifications Table
| Specification Item | Typical Options | Buyer Notes |
|---|---|---|
| Product Name | Class 12.9 alloy steel bolts | High strength metric bolts for demanding machinery and precision assemblies. |
| Mechanical Standard | ISO 898-1 property class 12.9 | Mechanical properties should be matched to the application and tightening method. |
| Dimensional Standards | ISO 4762, DIN 912, DIN 931, DIN 933, DIN 6921, buyer drawing | Confirm head type, drive type, thread length, and tolerance before order. |
| Thread | Metric coarse or fine thread, full or partial thread | Send diameter, pitch, length, and thread engagement requirement. |
| Материал | Heat treated alloy steel | Compared with general carbon steel fasteners, Class 12.9 bolts require closer material and heat treatment control. |
| Finish | Black oxide, plain oiled, phosphate, zinc flake, selected coatings | Coating process and hydrogen embrittlement risk should be reviewed for high strength bolts. |
| Inspection | Dimension check, thread gauge, hardness, tensile test, surface inspection | Inspection documents can be arranged according to purchase order requirement. |
| Export Packing | Bulk carton, small box, bag, wooden case, pallet, or assembly kit | Labels, barcodes, carton weight, shipping marks, and pallet layout are available upon request. |
Final specification should be confirmed by purchase order, drawing, sample, or project requirement before production and shipment arrangement.
Material and Grade Explanation
Class 12.9 alloy steel bolts are heat treated to achieve very high metric property class performance. They are commonly used in tooling, dies, molds, high load clamps, machine slides, automation equipment, and compact assemblies where lower strength bolts may not provide enough clamp load or fatigue resistance.
Buyers should match Class 12.9 bolts with suitable mating threads, nuts, washers, and tightening methods. Over-specifying bolt strength without checking the assembly can damage softer mating parts. For dimensional comparisons among metric standards, buyers can review the DIN and ISO fastener standards guide before finalizing the order list.
Grade Selection Notes
- Class 12.9 is used for high strength metric assemblies with controlled tightening.
- Correct thread engagement and mating material strength are important.
- Socket head, hex head, and flange bolt styles can be reviewed by drawing.
- Finish choice should be reviewed for friction, storage, corrosion, and embrittlement risk.
Surface Finish Selection Guide
Common Export Finishes
Black oxide with oil is frequently selected for Class 12.9 alloy steel bolts used in machinery and tooling environments. Plain oiled and phosphate finishes can also be supplied where the buyer needs controlled assembly behavior, short-term storage protection, or further processing according to order requirement.
Corrosion-Oriented Finishes
Zinc flake and selected coating systems can be reviewed when corrosion resistance is required for high strength alloy steel bolts. Electroplated zinc should be discussed carefully due to embrittlement risk. Related coated fasteners can be quoted together when a project requires consistent finish planning across multiple items.
Manufacturing and Quality Control
Class 12.9 alloy steel bolts are produced through material preparation, forming or machining where applicable, thread rolling, heat treatment, surface finishing, inspection, and packing. Export supply control focuses on mechanical property, thread fit, dimensional accuracy, head geometry, surface condition, and batch traceability according to order requirement.
For orders that include related industrial bolts, nuts, and washers, XZ Fastener can help organize item-code sorting, mixed cartons, pallet labels, shipping marks, and inspection documents. This supports tooling maintenance, machinery assembly, and distributor replenishment with fewer receiving errors.
Typical Inspection Points
- Head dimensions, shank length, thread length, and drive detail review.
- 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, shipping mark, and pallet plan verification before shipment.
Приложения
- Molds, dies, tooling plates, clamping systems, and fixture assemblies.
- Automation equipment, precision machinery, guides, slides, and equipment frames.
- High load brackets, press equipment, hydraulic systems, and maintenance programs.
- Export replenishment, distributor stock, MRO kits, and assembled fastener sets.
Class 12.9 alloy steel bolts are often paired with suitable nuts, threaded holes, and bearing surfaces. Where additional load distribution is needed, XZ Fastener can review matching flat washers and related components according to drawing and installation conditions.
How to Get a Faster Quotation
To receive a clear quotation for Class 12.9 alloy steel bolts, send the standard or drawing, head type, diameter, pitch, length, thread length, finish, quantity, packing method, delivery destination, and inspection requirements. If the bolts will be used in tooling, high clamp load, or precision machinery, include application notes and any required test reports.
For export orders, contact XZ Fastener with a structured size list and preferred packing details. Information such as carton weight, item labels, shipping marks, pallet size, coating requirement, and inspection documents helps confirm production and shipment planning more efficiently.
Часто задаваемые вопросы
What does Class 12.9 mean for alloy steel bolts?
Class 12.9 is a high strength metric property class. It indicates very high tensile strength and is typically used for demanding mechanical assemblies where correct tightening and mating material strength are important.
Which bolt types can be supplied in Class 12.9?
Class 12.9 can be reviewed for socket head cap screws, hex bolts, flange bolts, and drawing-based bolts according to order requirement. The dimensional standard or drawing should be provided in the inquiry.
What material is used for Class 12.9 alloy steel bolts?
Class 12.9 bolts are typically made from heat treated alloy steel. Material and heat treatment can be reviewed according to purchase order and application requirement.
Which finishes are suitable for Class 12.9 alloy steel bolts?
Black oxide, plain oiled, phosphate, zinc flake, and selected coatings can be reviewed. Electroplated finishes should be discussed carefully because high strength bolts may be sensitive to hydrogen embrittlement risk.
Can Class 12.9 alloy steel bolts 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 for export orders?
Dimension inspection, thread gauge check, hardness report, mechanical property report, coating inspection, packing verification, and other documents can be arranged according to purchase order requirement.
Send Your Class 12.9 Alloy Steel Bolt 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 export order details, bolt type, coating selection, carton labels, pallet plan, shipping marks, mechanical testing, and any drawing-based requirements before production or shipment arrangement.