M6 x 20mm Hex Bolt: High-Strength Fastening Solution for Industrial Applications
In the demanding world of industrial assembly and construction, the integrity of every connection is paramount. The M6 x 20mm hex bolt stands as a fundamental component in this ecosystem, offering a reliable and robust fastening solution for a vast array of applications. Engineered for precision and durability, this metric hex head cap screw provides the essential clamping force required in machinery, structural frameworks, and equipment manufacturing. This product page details the specifications, benefits, and superior quality of our industrial-grade M6 x 20mm hex bolts, designed to meet the rigorous standards of global B2B procurement.
Product Overview
Our M6 x 20mm hex bolt is a standard metric fastener characterized by a hexagonal head and a 20mm long threaded shank with a 6mm diameter. It is manufactured to exacting international standards, ensuring consistent thread pitch, dimensional accuracy, and reliable mechanical performance. As a cornerstone of mechanical fastening, this bolt is utilized to join multiple components, typically with a nut, providing a secure, semi-permanent, or permanent joint that can withstand shear and tensile stresses. Ideal for OEMs, MRO operations, and construction projects, it is a versatile and indispensable item in any industrial inventory.
Key Features
- High-Strength Material: Fabricated from grade 8.8 steel (or higher grades available), offering excellent tensile strength and resistance to deformation under load.
- Precision Threading: Rolled threads ensure superior fatigue resistance and a smoother engagement with nuts and tapped holes, reducing the risk of cross-threading.
- Corrosion Resistance Options: Available in various finishes including zinc plating (yellow or blue-white), hot-dip galvanizing, and stainless steel (A2-70/A4-80) for enhanced durability in diverse environments.
- Full Thread vs. Partial Thread: The standard M6 x 20mm hex bolt is typically fully threaded, but partial thread (shank) versions can be supplied for applications requiring precise shear strength.
- Hexagon Head Design: The six-sided head allows for high torque application with common wrenches and socket sets, ensuring secure tightening and easy maintenance.
Technical Specifications
| Parameter | Specification | Standard / Notes |
|---|---|---|
| Thread Diameter (D) | 6 mm | Metric Coarse (M6) |
| Thread Pitch | 1.0 mm | Standard Pitch |
| Length (L) | 20 mm | Measured under the head |
| Head Style | Hexagon | Width Across Flats: 10 mm |
| Material Grade | Grade 8.8 (Standard) | Also available in 10.9, 12.9, Stainless Steel A2/A4 |
| Tensile Strength | 800 MPa min (Grade 8.8) | Proof Load: 580 MPa |
| Standard Compliance | DIN 933 / ISO 4017 | Equivalent to ANSI/ASME B18.2.3.1M |
| Common Finishes | Zinc Plated, HDG, Plain, Stainless | Custom finishes on request |
Application Scenarios
The M6 x 20mm hex bolt is a workhorse fastener suitable for numerous industrial and commercial settings. Its balanced size and strength make it a preferred choice for medium-duty applications.
- Machinery & Equipment Manufacturing: Assembly of machine frames, panels, motor mounts, and conveyor systems.
- Automotive & Transportation: Securing components in vehicle interiors, engine bays (non-critical), trailers, and agricultural machinery.
- Electronics & Enclosures: Fastening server racks, electrical cabinets, control panels, and instrumentation housings.
- Construction & Metal Fabrication: Joining steel brackets, light structural supports, scaffolding elements, and furniture frames.
- General Maintenance, Repair, and Operations (MRO): An essential spare part for factory upkeep, facility management, and equipment repair.
Advantages
Choosing our M6 x 20mm hex bolts provides distinct benefits for your supply chain and end-use applications.
- Consistent Quality & Reliability: Rigorous quality control at every production stage guarantees dimensional accuracy and mechanical properties, reducing assembly issues and failure risks.
- Enhanced Durability: High-grade materials and protective finishes extend service life, even in challenging environments with vibration, moisture, or chemical exposure.
- Global Standard Compliance: Manufactured to ISO/DIN standards, ensuring compatibility with international designs and components, simplifying global procurement.
- Cost-Effective Sourcing: As a high-volume commodity, we offer competitive pricing without compromising quality, providing excellent value for bulk B2B purchases.
- Supply Chain Efficiency: Available for immediate shipment in bulk quantities, packaged clearly for easy identification and inventory management.
Why Choose Us as Your M6 x 20mm Hex Bolt Supplier
We are more than just a distributor; we are a strategic partner in your supply chain. Our specialization in industrial fasteners ensures you receive expert service and products you can trust.
- Deep Industrial Expertise: Our team possesses extensive knowledge of fastener technology and applications, providing technical support and product recommendations.
- Extensive Inventory & Customization: We stock vast quantities of the standard M6 x 20mm hex bolt and can provide custom variations in material, grade, finish, and length to meet specific project requirements.
- Stringent Quality Assurance: Every batch is tested for hardness, tensile strength, and dimensional conformity, with certifications (e.g., Material Test Reports) available upon request.
- Global Logistics Network: We facilitate seamless international trade with reliable shipping, export documentation, and Incoterms compliance, ensuring your order arrives on time, anywhere.
- Dedicated B2B Support: We offer account management, volume pricing, and flexible payment terms tailored to the needs of businesses and procurement professionals.
Frequently Asked Questions (FAQ)
What is the difference between an M6 x 20mm hex bolt and a machine screw?
While similar, a hex bolt is generally designed to be used with a nut or in a tapped hole, often for heavier-duty applications. It typically has a thicker shank. A machine screw is often smaller, used with a nut or directly into a tapped hole, and may have a variety of head styles (pan, flat, etc.). The M6 x 20mm hex bolt is specifically a hex-head cap screw.
Can I get this bolt in stainless steel?
Yes, absolutely. We supply the M6 x 20mm hex bolt in A2-304 (general purpose) and A4-316 (marine grade) stainless steel, offering excellent corrosion resistance for food processing, marine, or chemical environments.
What torque should be applied to an 8.8 grade M6 x 20mm hex bolt?
Torque values depend on the finish and lubrication. As a general guideline, for a zinc-plated, lightly oiled grade 8.8 M6 bolt, a torque of approximately 10 Nm (7.4 ft-lb) is common. Always refer to engineering specifications for your specific application, as under or over-torquing can lead to joint failure.
Do you offer smaller or larger packaging than bulk boxes?
Our standard offering is in bulk industrial boxes (e.g., 1000 pieces per box). However, we can accommodate custom packaging requests, including smaller cartons, poly bags, or kit packaging for OEMs, subject to order volume.
What are your lead times for large international orders?
For standard M6 x 20mm hex bolts from stock, we aim to ship within 3-5 working days. For custom orders or very large volumes, our sales team will provide a precise lead time based on production scheduling. We prioritize clear communication throughout the process.
Contact our sales team today for a competitive quote, technical data sheets, or to discuss your specific requirements for the M6 x 20mm hex bolt and other industrial fasteners.
