Flange Bolt with Geomet Coating and Red Threadlocker for Agricultural and Earthmoving Machinery

EFS supplies this high-strength flange bolt manufactured in Italy, featuring Geomet® zinc flake coating and red threadlocker, designed for agricultural and earthmoving machinery.

These fastening solutions are engineered to ensure structural reliability, corrosion resistance, and long-term clamp load stability under severe operating conditions typical of tractors and earthmoving equipment.

Property Class 10.9 and 12.9 Flange Bolts: Certified Mechanical Performance

The Geomet-coated flange bolt with threadlocker used in agricultural and earthmoving applications is typically supplied in property class 10.9 or 12.9 according to EN ISO 898-1, the international standard defining mechanical properties of carbon and alloy steel fasteners.

Main features:

• Tensile strength ≥ 1000 MPa (Class 10.9)
• Tensile strength ≥ 1200 MPa (Class 12.9)
• High fatigue resistance under dynamic loads
• Thread tolerances compliant with ISO 965.

Materials include quenched and tempered alloy steels such as 42CrMo4 according to EN 10083-3, ensuring the required strength class and structural uniformity.

The integrated flange improves load distribution and enhances clamp load stability, reducing the risk of loosening in structural assemblies.

Zinc Flake Geomet® Coating: Advanced Corrosion Protection

The Geomet® zinc flake coating complies with ISO 10683 for non-electrolytically applied zinc flake coatings.

For bolts used in agricultural and earthmoving machinery exposed to moisture, mud, fertilisers and aggressive environmental conditions, this treatment provides:

• Corrosion resistance up to 720 hours in neutral salt spray testing according to ISO 9227
• No risk of hydrogen embrittlement
• Controlled friction coefficient
• Uniform coating coverage on complex geometries.

Compared to electroplated coatings (ISO 4042), zinc flake systems are particularly suitable for high-strength bolts used in critical tightening applications.

Red Threadlocker: High-Strength Structural Locking

The flange bolt with red threadlocker integrates a high-strength chemical locking system applied directly to the thread to prevent loosening caused by vibration and dynamic loads.

According to widely adopted industrial convention, the red colour identifies high-strength formulations intended for permanent or structural locking applications.

Functional characteristics include:

• High breakaway torque
• Long-term preload stability
• Resistance to continuous vibration
• Protection against contaminants and fluids.

Controlled pre-application during production ensures consistent performance and repeatability, essential requirements in fastening systems for agricultural and earthmoving machinery.

EFS Certification and Quality Control

The supply of Geomet-coated flange bolts with red threadlocker is managed by EFS under structured and traceable quality control procedures.

Upon request, each batch can be supplied with 3.1 certification according to EN 10204.

Verification activities include:

• Dimensional inspection according to ISO 965
• Mechanical testing in compliance with EN ISO 898-1
• Hardness and metallographic structure checks
• Friction coefficient monitoring
• Corrosion resistance testing according to ISO 9227.

Compliance with international standards and OEM technical specifications ensures consistent reliability in heavy-duty sector.

EFS is an ISO 9001:2015 certified company.

Applications in Agricultural and Earthmoving Spare Parts

The Class 10.9 Geomet-coated flange bolt with red threadlocker is typically used in:

• Structural frames
• Engine mounts
• Transmission systems
• Attachment and joint components.

The combination of high mechanical strength, zinc flake corrosion protection and structural locking reduces the risk of loosening. It also enhances operational safety and improves component durability in severe working environments.

To learn more about fastening component standards, you can refer to the UNI EN ISO 898-1 standard.