DIN 607 – Flat Countersunk Head Bolts with Square Neck

Overview of DIN 607 Bolts

DIN 607 refers to Flat Countersunk Head Bolts with Square Neck, designed for secure fastening in machine assemblies, conveyor systems, and metal structures. The square neck under the head ensures a firm grip and prevents rotation during tightening, providing a smooth surface finish after installation.

These bolts are commonly used where flush fitting and anti-rotation are required, ensuring precision alignment and durability.

Technical Specifications – DIN 607

• Standard: DIN 607

• Type: Flat Countersunk Head Bolt with Square Neck

• Thread Type: Metric (M6 to M20)

• Thread Pitch: Coarse Thread (as per ISO 261 / ISO 965)

• Head Style: Flat Countersunk Head (Angle 90°)

• Drive Type: None (square neck for anti-rotation)

• Shank: Partially threaded

• Tensile Strength: Up to 1000 N/mm² depending on grade

• Surface Finish: Plain, Zinc Plated, Hot Dip Galvanized, Black Oxide, Dacromet

Available Material Grades

DIN 607 bolts are manufactured using high-quality materials suitable for mechanical and structural applications.

Carbon Steel Grades

• Grade 4.6 / 5.6 / 8.8: General-purpose use with moderate strength.

• Grade 10.9 / 12.9: High tensile strength, ideal for heavy-duty machinery.

Stainless Steel Grades

• A2-70 (304 Stainless Steel): Excellent corrosion resistance for indoor and mild outdoor environments.

• A4-80 (316 Stainless Steel): Superior resistance to chemicals and marine conditions.

Other Materials

• Brass: For electrical or decorative applications.

• Alloy Steel: For high-performance mechanical assemblies.

Applications of DIN 607 Bolts

DIN 607 bolts are widely used across multiple industries for both structural and mechanical assemblies.

Industrial Applications

• Conveyor systems and roller assemblies

• Steel and metal construction joints

• Mechanical equipment and agricultural machinery

• Transport systems and frame structures

• Automotive components requiring flush head fastening

Advantages

• Prevents bolt rotation due to square neck fit.

• Provides a smooth, flush surface finish after installation.

• High tensile strength suitable for heavy load-bearing joints.

• Available in corrosion-resistant finishes for harsh environments.

Thread Standards and Compatibility

• Thread Standard: ISO Metric (DIN 13)

• Thread Tolerance: 6g (external thread)

• Compatible Nuts: DIN 934, DIN 985 (for locking applications)

• Washer Compatibility: DIN 125, DIN 9021

Surface Treatment Options

To enhance corrosion protection and appearance, DIN 607 bolts can be supplied with:

• Zinc Plating (White/Yellow)

• Black Oxide Coating

• Hot-Dip Galvanizing

• Nickel or Chrome Plating

• Passivation for Stainless Steel

Quality & Certification

All DIN 607 bolts are produced according to DIN / ISO / EN standards and can be supplied with Material Test Certificates (EN 10204 3.1) upon request.