Fully Threaded Steel Rod M6 M7 M8 - High-Quality China Suppliers and Factory for Construction and Mechanical Applications
Specifications
| Parameter | Range / Options |
| Diameter | M3 – M64 (metric) 1/4″ – 2-1/2″ (inch series) |
| Length | 1 m – 6 m (standard: 3m, 6m) Custom lengths available |
| Thread Pitch | Coarse (standard) or fine pitch per application requirements |
| Thread Direction | Right-hand (standard) Left-hand available for special applications |
Material & Finish Options
| Material Type | Standard | Common Grades | Finish Options |
| Carbon Steel | ASTM A307 | Grade A (general purpose) | Plain, Oiled, Zinc Plated, HDG |
| ASTM A193 | Grade B7 (high strength) | Plain, Black Oxide | |
| DIN 975 / 976 | 4.8, 5.8, 8.8, 10.9, 12.9 | Various | |
| ISO 898-1 | Class 4.6, 4.8, 5.8, 8.8, 10.9 | ||
| Stainless Steel | ASTM A193 / A320 | B8 (304), B8M (316) | Plain, Passivated |
| DIN 975 / 976 | A2 (304), A4 (316) | Plain | |
| Galvanized | ASTM A153 / A123 | Various base grades | Hot-Dip Galvanized (HDG) |
| Brass / Bronze | ASTM B16 / B124 | C36000, C46400 | Plain |
| Nylon / Plastic | Various | Nylon 6/6, PVC | Colored options |
Features
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Continuous Threading Full-length threads allow cutting to any length and provide maximum engagement with nuts and couplings anywhere along the rod.
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Versatile Connection Can be used with hex nuts, coupling nuts, flange nuts, wing nuts, or directly threaded into tapped holes.
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Cut-to-Length Flexibility Easily cut to desired length using standard tools without thread damage.
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High Tensile Strength Available in multiple strength grades to match application requirements.
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Corrosion Resistance Various material and coating options suit indoor, outdoor, and harsh environments.
Applications
1
Overhead Suspension Systems
Threaded rods are extensively used to suspend HVAC equipment, ductwork, piping, electrical conduits, and cable trays from ceiling structures using beam clamps and hanger assemblies.
2
Pipe and Conduit Supports
Combined with pipe clamps, clevis hangers, and trapeze systems, threaded rods provide adjustable vertical support for plumbing, fire protection, and mechanical piping.
3
Anchoring and Fastening
Used with expansion anchors or chemical anchors to secure equipment, machinery, structural steel, and building components to concrete floors and walls.
4
Structural Bracing
Employed as diagonal tension rods for seismic bracing, wind bracing, and stabilization of structural frames and equipment racks.
5
Electrical & Mechanical Equipment Mounting
Support motors, pumps, fans, transformers, switchgear, and control panels with adjustable-height mounting solutions.
6
Formwork and Concrete Construction
Used as tie rods for concrete formwork systems, providing tension resistance between opposing form faces during concrete placement.
7
Furniture and Fixture Manufacturing
Serve as adjustable legs, connectors, and structural elements in industrial shelving, workbenches, display fixtures, and custom fabrications.
8
Automotive and Transportation
Applied in engine mounts, exhaust system hangers, and chassis component connections where vibration resistance is required.
9
Marine and Offshore
Stainless steel grades (316) provide corrosion resistance for saltwater environments in shipbuilding, docks, and offshore platforms.
10
Renewable Energy
Used in solar panel mounting structures, wind turbine tower connections, and hydroelectric equipment supports.
Frequently Asked Questions
Q
What is the difference between metric and inch series threaded rods?
Metric threaded rods follow ISO/DIN standards and are sized in millimeters (e.g., M3 to M64), while inch series rods follow ASTM/ANSI standards and are sized in fractions of an inch (e.g., 1/4″ to 2-1/2″). The thread pitch and engagement dimensions differ between the two systems, so they are not interchangeable.
Q
Which material grade should I choose for outdoor or corrosive environments?
For outdoor general use, hot-dip galvanized (HDG) carbon steel offers good corrosion protection. For marine, coastal, or chemically aggressive environments, stainless steel Grade 316 (A4 / B8M) is strongly recommended due to its superior resistance to chloride-induced corrosion.
Q
Can threaded rods be cut to a custom length without damaging the threads?
Yes. Threaded rods are designed for cut-to-length flexibility. They can be cut using a hacksaw, angle grinder, or thread-cutting tool. After cutting, it is recommended to use a thread die or file to clean up the cut end to ensure smooth nut engagement without cross-threading.
Q
What is the difference between ASTM A193 Grade B7 and Grade B8 threaded rods?
Grade B7 is a high-strength alloy steel (chromium-molybdenum) rod commonly used in high-temperature and high-pressure applications such as flanged joints and pressure vessels. Grade B8 is made from austenitic stainless steel (304), offering corrosion resistance for general-purpose and mildly corrosive environments. B8M (316 SS) provides enhanced corrosion resistance.
Q
What types of nuts are compatible with threaded rods?
Threaded rods are compatible with a wide range of nuts, including standard hex nuts, heavy hex nuts, coupling nuts (used to join two rods), flange nuts, wing nuts, and lock nuts. The nut must match the rod's thread standard (metric or inch), pitch (coarse or fine), and material grade for optimal performance.
Q
Are custom lengths and special thread configurations available?
Yes. In addition to standard lengths of 1 m, 3 m, and 6 m, custom lengths can be manufactured to meet specific project requirements. Special configurations such as left-hand threads, fine-pitch threads, and non-standard diameters are also available upon request for specialized engineering applications.