Fully Threaded Steel Rod M6 M7 M8 - China Suppliers & Factory for Construction, Electrical & 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
Continuous Threading
Full-length threads allow cutting to any length and provide maximum engagement with nuts and couplings anywhere along the rod.
Versatile Connection
Can be used with hex nuts, coupling nuts, flange nuts, wing nuts, or directly threaded into tapped holes.
Cut-to-Length Flexibility
Easily cut to desired length using standard tools without thread damage.
High Tensile Strength
Available in multiple strength grades to match application requirements.
Corrosion Resistance
Various material and coating options suit indoor, outdoor, and harsh environments.
Applications
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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.
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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.
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Anchoring and Fastening Used with expansion anchors or chemical anchors to secure equipment, machinery, structural steel, and building components to concrete floors and walls.
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Structural Bracing Employed as diagonal tension rods for seismic bracing, wind bracing, and stabilization of structural frames and equipment racks.
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Electrical & Mechanical Equipment Mounting Support motors, pumps, fans, transformers, switchgear, and control panels with adjustable-height mounting solutions.
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Formwork and Concrete Construction Used as tie rods for concrete formwork systems, providing tension resistance between opposing form faces during concrete placement.
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Furniture and Fixture Manufacturing Serve as adjustable legs, connectors, and structural elements in industrial shelving, workbenches, display fixtures, and custom fabrications.
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Automotive and Transportation Applied in engine mounts, exhaust system hangers, and chassis component connections where vibration resistance is required.
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Marine and Offshore Stainless steel grades (316) provide corrosion resistance for saltwater environments in shipbuilding, docks, and offshore platforms.
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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 are designated by diameter in millimeters (e.g., M3–M64) and follow ISO/DIN standards, while inch series rods are measured in fractional inches (e.g., 1/4"–2-1/2") and follow ASTM/ANSI standards. The choice depends on your regional standard and the mating hardware (nuts, couplings) being used.
Q
Which material grade should I choose for outdoor or corrosive environments?
For outdoor or mildly corrosive environments, hot-dip galvanized (HDG) carbon steel is a cost-effective choice. For highly corrosive or marine environments, stainless steel Grade 316 (A4 / B8M) offers superior corrosion resistance. Brass and bronze options are also suitable for specific chemical environments.
Q
Can threaded rods be cut to a custom length on-site?
Yes. One of the key advantages of full-length threaded rods is their cut-to-length flexibility. They can be cut using a hacksaw, angle grinder, or bolt cutter without damaging the remaining threads, making them ideal for field adjustments and custom installations.
Q
What is the difference between coarse and fine thread pitch?
Coarse thread pitch is the standard option and is preferred for general-purpose applications due to faster assembly, better resistance to cross-threading, and easier use in dirty or coated surfaces. Fine thread pitch provides greater tensile strength and better resistance to loosening under vibration, making it suitable for precision or high-stress applications.
Q
What types of nuts and hardware are compatible with threaded rods?
Threaded rods are compatible with a wide range of hardware including hex nuts, coupling nuts (for rod-to-rod extension), flange nuts, wing nuts, and lock nuts. They can also be used with rod hangers, beam clamps, pipe clamps, turnbuckles, and can be threaded directly into tapped holes in equipment or structural components.
Q
How do I select the correct strength grade for my application?
Strength grade selection depends on the load requirements and safety factors of your application. For general construction and light-duty use, grades 4.8 or 5.8 (DIN) or Grade A (ASTM A307) are sufficient. For structural, high-load, or elevated-temperature applications, higher grades such as 8.8, 10.9, or ASTM A193 Grade B7 are recommended. Always consult engineering specifications or a qualified engineer for critical load-bearing applications.