DIN912 Alloy Steel Grade 12.9 Zinc-Nickel Plated Allen Screw
The din912 alloy steel grade 12.9 zinc-nickel plated allen screw is a high-strength precision fastener designed for heavy-duty mechanical assemblies requiring extreme tensile performance, vibration resistance, and superior surface protection. As a premium industrial fastener, the din912 alloy steel grade 12.9 zinc-nickel plated allen screw delivers exceptional clamping force and reliability in demanding engineering environments.
In modern manufacturing systems, the din912 alloy steel grade 12.9 zinc-nickel plated allen screw is widely used in automotive, machinery, hydraulic equipment, and high-load structural assemblies. Compared with standard stainless steel hex bolt or stainless steel fasteners, this 12.9-grade alloy steel screw provides significantly higher strength, making it suitable for critical load-bearing connections.
Product Overview
The din912 alloy steel grade 12.9 zinc-nickel plated allen screw is manufactured according to DIN912 standards with high-precision internal hex drive design. Made from quenched and tempered alloy steel (grade 12.9), it offers extremely high tensile strength and excellent fatigue resistance.
The zinc-nickel alloy coating provides superior corrosion resistance compared to standard zinc plating, making the din912 alloy steel grade 12.9 zinc-nickel plated allen screw suitable for harsh industrial environments, including outdoor machinery and automotive underbody systems.
As part of OEM fasteners and high-performance fastening systems, the din912 alloy steel grade 12.9 zinc-nickel plated allen screw ensures stable preload and long-term structural reliability.
Product Specifications
| Item | Specification |
|---|---|
| Standard | din912 |
| Product Name | din912 alloy steel grade 12.9 zinc-nickel plated allen screw |
| Material | alloy steel (quenched & tempered) |
| Strength Grade | 12.9 |
| Thread Type | metric coarse / fine thread |
| Head Type | socket head cap |
| Drive Type | internal hex (allen) |
| Diameter Range | m3 – m36 |
| Length Range | 5 mm – 200 mm |
| Surface Finish | zinc-nickel alloy plated |
| Thread Direction | right hand |
| Packaging | box / bulk / oem packaging |
| Customization | available |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | ≥ 1200 mpa |
| Yield Strength | ≥ 1080 mpa |
| Hardness | 39–44 hrc |
| Density | 7.85 g/cm³ |
| Corrosion Resistance | excellent (high salt spray resistance with zinc-nickel coating) |
| Operating Temperature | -50°c to 150°c |
| Thread Tolerance | iso metric class 6g |
| Manufacturing Standard | din912 / iso equivalent |
Materials and Manufacturing Process
The din912 alloy steel grade 12.9 zinc-nickel plated allen screw is produced through a controlled high-strength manufacturing process:
- raw material selection: high-grade alloy steel wire rod
- cold heading: forming socket head structure
- quenching & tempering: achieving grade 12.9 strength
- thread rolling: high-precision metric threading
- surface preparation: cleaning and activation
- zinc-nickel electroplating: high corrosion resistance coating
- passivation treatment: enhances coating stability
- inspection: mechanical and dimensional testing
- packaging: anti-corrosion export packaging
This process ensures reliable performance for industrial fasteners used in high-stress applications.
Applications of the Product
The din912 alloy steel grade 12.9 zinc-nickel plated allen screw is widely used across multiple industries:
- automotive industry: engine, chassis, and transmission systems
- machinery manufacturing: high-load equipment assembly
- hydraulic systems: pressure-bearing mechanical connections
- construction machinery: structural fastening systems
- industrial automation: robotic and precision equipment
- renewable energy: mechanical support structures
- rail transportation: vibration-resistant assemblies
- OEM manufacturing: high-strength production systems
Its ultra-high strength makes it more suitable than standard stainless steel hex bolt solutions in heavy-duty applications.
Why Choose This Product
- ultra-high strength grade 12.9 alloy steel
- excellent fatigue and tensile performance
- zinc-nickel coating for superior corrosion resistance
- stable preload under vibration and shock loads
- precision internal hex drive design
- suitable for harsh industrial environments
- long service life under heavy-duty conditions
- OEM bulk production support
- reliable performance in safety-critical systems
Why Choose Flybear
Flybear is a professional manufacturer specializing in high-performance industrial fasteners.
- advanced cold heading and heat treatment production lines
- strict iso-based quality control system
- strong oem customization capability
- stable mass production capacity
- global export experience
- engineering technical support
Flybear provides reliable industrial fasteners and precision-engineered fastening solutions for global industries.
Quality Inspection and Control
Each din912 alloy steel grade 12.9 zinc-nickel plated allen screw undergoes strict inspection:
- chemical composition analysis
- tensile strength testing
- hardness testing
- torque performance testing
- coating thickness inspection
- salt spray corrosion testing
- thread gauge inspection
- dimensional accuracy measurement
- packaging quality inspection
All processes comply with iso quality management standards.
Selection Guide
When selecting a din912 alloy steel grade 12.9 zinc-nickel plated allen screw, consider:
- required load and torque level
- corrosion environment severity
- strength grade requirements (12.9)
- bolt diameter and length
- vibration and fatigue conditions
- coating performance requirements
Proper selection ensures maximum safety and performance.
FAQ
1. what is din912 grade 12.9 screw?
it is a high-strength socket head cap screw made from alloy steel with 1200 mpa tensile strength.
2. what is zinc-nickel plating?
it is a high-corrosion-resistance coating used for harsh environments.
3. is grade 12.9 stronger than stainless steel bolts?
yes, it has significantly higher tensile strength than standard stainless steel fasteners.
4. where is it commonly used?
it is widely used in automotive, machinery, and hydraulic systems.
5. can custom sizes be produced?
yes, flybear supports oem customization based on requirements.
We always adhere to the philosophy of quality first and customer first, providing customers with high-quality fastener products and one-stop fastener solutions.
For quotation, customization, and technical support, please Contact Us.
