DIN912 Hexagon Socket Head Cap Screws Specifications
Parameter | Details |
Product Model | DIN912 Hexagon Socket Head Cap Screws (Full Strength Series) |
Strength Grade | Grade 8.8, Grade 10.9, Grade 12.9 (Full Coverage) |
Material | Grade 8.8: Carbon Steel; Grade 10.9: 40Cr Alloy Steel; Grade 12.9: 42CrMo High-Strength Alloy Steel |
Standard | DIN912, ISO4762 |
Thread Tolerance | 6H Precision Metric Thread, Universal Standard Tolerance |
Surface Finish | Plain, Black Oxide, Zinc Plated, Hot-Dip Galvanized, Dacromet, Geomet |
Size Range | M2-M42 Full Size In Stock, Custom Non-standard Sizes Available |
Application Classification | Grade 8.8: Light-duty Equipment; Grade 10.9: Medium & Heavy-duty Machinery; Grade 12.9: Precision Molds & High-end Equipment |
Certification | ISO9001, Material Test Report, Hardness Test Report, Tensile Strength Test Report, Batch Quality Certificate |
Package | Standard Export Carton & Pallet, Custom Export Packaging Supported |
Delivery Time | 3-7 days for regular stock sizes, 15-25 days for bulk and non-standard orders |
Full Grade Product Features & Advantages
Full Strength Coverage for Diversified Scenarios
Our DIN912 socket head cap screws cover three mainstream industrial strength grades: 8.8, 10.9 and 12.9, with graded performance to match different load conditions. Grade 8.8 features high cost performance for light-duty static fastening; Grade 10.9 offers balanced performance for medium and heavy-duty industrial equipment; Grade 12.9 is the highest civilian industrial strength, capable of withstanding ultra-high load, high-frequency vibration and impact without fracture or loosening.
Precision Thread & Strong Compatibility
All screws are processed by high-precision thread rolling technology with full and uniform threads and accurate 6H tolerance. They are easy to install, tightly engaged and highly interchangeable. Effectively solve common problems such as thread slipping and loosening during long-term equipment operation, perfectly suitable for various precision assembly scenarios.
Multiple Anti-corrosion Finishes for Harsh Environments
Various customized surface treatments are available for all strength grades. Black oxide finish is economical for indoor dry environments. Zinc plating, hot-dip galvanizing, Dacromet and Geomet finishes are applicable for outdoor, humid and corrosive working conditions, providing excellent rust and corrosion resistance to extend service life.
Grade 8.8 DIN912 Screws
Made of high-quality carbon steel with quenching and tempering treatment, featuring moderate hardness, good toughness and cost-effectiveness. Widely used for light-duty static fastening of general mechanical equipment, sheet metal chassis, tooling fixtures and electromechanical devices, serving as basic general industrial fasteners.
Grade 10.9 DIN912 Screws
Manufactured from 40Cr alloy steel, with much higher mechanical strength and fatigue resistance than Grade 8.8. It performs stably in medium-heavy load and slight vibration working conditions, widely applied in automated assembly lines, hydraulic equipment, machine tool accessories and general engineering machinery, being the most popular mid-to-high grade fastener.
Grade 12.9 DIN912 Screws
Adopting 42CrMo high-strength alloy steel with high-temperature quenching and tempering, Grade 12.9 is the top-level industrial strength grade. It excels in tensile strength, yield strength, impact resistance and fatigue resistance, specially designed for high-load, high-precision and high-stability core fastening scenarios such as precision molds, high-pressure hydraulic systems, high-end CNC equipment and new energy precision components.
Production Process
Graded Material Selection: Match carbon steel, 40Cr and 42CrMo raw materials according to different strength grades to ensure stable material composition and reliable graded performance.
Precision Cold Heading Forming: One-piece cold heading molding with full burr-free head, compact internal structure and uniform strength.
Precision Thread Rolling: Processed by high-precision rolling equipment to meet standard thread accuracy with strong universality and interchangeability.
Graded Heat Treatment: Customized temperature-controlled quenching and tempering processes for Grade 8.8/10.9/12.9 to accurately meet corresponding mechanical performance standards.
Custom Surface Treatment: Provide professional anti-rust and anti-corrosion treatments according to customer working condition requirements.
Full Batch Inspection: Test dimensions, hardness, tensile strength and thread precision batch by batch, providing authoritative quality inspection reports to guarantee overall product quality.
Application Industries
Mold Manufacturing: Core fastening of plastic molds, hardware molds and die-casting molds (Grade 12.9 preferred).
Automation Equipment: Fixing of manipulators, assembly lines and precision tooling fixtures (Grade 10.9/12.9).
Hydraulic & Pneumatic Equipment: High-pressure connection of hydraulic valve blocks, oil cylinders and air cylinders (Grade 10.9 and above).
CNC Machinery: Precision assembly of machine tool beds, guide rails and spindles (mainly Grade 12.9).
General Electromechanical Equipment: Fastening of chassis, shells and ordinary mechanical structures (Grade 8.8/10.9).
New Energy Equipment: Load-bearing connection of energy storage equipment and motor shells (Grade 10.9/12.9).
Why Choose Our Full-series DIN912 Screws
We specialize in the production of full-series high-strength fasteners, covering all DIN912 grades of 8.8, 10.9 and 12.9 to realize one-stop procurement. All production processes comply with ISO9001 quality management system with graded production and strict inspection, effectively preventing grade substitution and material mixing. We have sufficient stock of full specifications, stable delivery, support non-standard customization and special surface treatment, and can provide complete material test reports to provide high-matching and cost-effective fastening solutions for global industrial projects.
If you are looking for standard and high-quality DIN912 hexagon socket head cap screws in Grade 8.8, Grade 10.9 and Grade 12.9, feel free to contact us for professional technical support and accurate quotation.
