Fully Threaded Steel Rods M6 M7 M8 - China Suppliers & Factory Direct Wholesale
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
Overhead Suspension Systems
Used to suspend HVAC equipment, ductwork, piping, electrical conduits, and cable trays from ceiling structures using beam clamps and hanger assemblies.
Pipe and Conduit Supports
Combined with pipe clamps, clevis hangers, and trapeze systems for adjustable vertical support of plumbing, fire protection, and mechanical piping.
Anchoring and Fastening
Used with expansion anchors or chemical anchors to secure equipment, machinery, structural steel, and building components to concrete floors and walls.
Structural Bracing
Employed as diagonal tension rods for seismic bracing, wind bracing, and stabilization of structural frames and equipment racks.
Electrical & Mechanical Equipment Mounting
Support motors, pumps, fans, transformers, switchgear, and control panels with adjustable-height mounting solutions.
Formwork and Concrete Construction
Used as tie rods for concrete formwork systems, providing tension resistance between opposing form faces during concrete placement.
Furniture and Fixture Manufacturing
Serve as adjustable legs, connectors, and structural elements in industrial shelving, workbenches, display fixtures, and custom fabrications.
Automotive and Transportation
Applied in engine mounts, exhaust system hangers, and chassis component connections where vibration resistance is required.
Marine and Offshore
Stainless steel grades (316) provide corrosion resistance for saltwater environments in shipbuilding, docks, and offshore platforms.
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 a threaded rod and a stud bolt?
A threaded rod (also called an all-thread rod) has continuous threads along its entire length, allowing it to be cut to any desired size. A stud bolt, by contrast, typically has threads only at both ends with an unthreaded shank in the middle, and is manufactured to fixed lengths for specific flange or structural applications.
Q What material 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 saltwater environments — such as marine, coastal, or chemical processing applications — stainless steel Grade 316 (A4 / B8M) is strongly recommended due to its superior chloride resistance.
Q Can threaded rods be cut to custom lengths on-site?
Yes. One of the primary advantages of threaded rods is their cut-to-length flexibility. They can be easily cut using a hacksaw, angle grinder, or bolt cutter. After cutting, a thread-cleaning die or file can be used to clean up the cut end and restore thread integrity for proper nut engagement.
Q What is the difference between coarse and fine thread pitch?
Coarse thread pitch (standard) offers faster assembly, greater resistance to cross-threading, and better performance in softer materials. Fine thread pitch provides higher tensile strength, better resistance to loosening under vibration, and more precise adjustment — making it preferred in precision mechanical and automotive applications.
Q What strength grade should I select for structural or high-load applications?
For general structural use, Grade 4.8 or 5.8 (DIN/ISO) is typically sufficient. For high-strength structural and industrial applications, Grade 8.8, 10.9, or 12.9 carbon steel rods — or ASTM A193 Grade B7 — are recommended. Always verify load requirements against the rod's rated tensile and proof load values before installation.
Q Are metric and inch series threaded rods interchangeable?
No. Metric (M-series) and inch series (UNC/UNF) threaded rods have different thread forms, pitches, and diameters — they are not interchangeable and must be used with matching nuts, couplings, and anchors of the same thread standard. Always confirm the thread specification before ordering or installing components.