Threaded Rods for Structural Fastening – Strength, Materials & Custom Cuts

When your application demands long-length fasteners, high-tension joins, or custom-length threading, there's one solution that delivers unmatched flexibility and strength: the Threaded Rod.

Also known as a stud, all-thread, or threaded bar, this fastener plays a crucial role in construction, machinery assembly, electrical installation, and equipment manufacturing.

In this guide, Dongguan Sango Hardware Fasteners Co., Ltd., a direct manufacturer of industrial fasteners, explains the types, applications, and custom options for Threaded Rods in modern projects.

1. What Is a Threaded Rod?

A Threaded Rod is a long, straight rod that’s threaded along its entire length or partially threaded at both ends. It functions as a versatile tension member or anchor, connecting parts across extended distances.

🔩 Main Functions:

• Structural anchoring
• Load-bearing joints
• Spacer or standoff component
• Custom-length fastener for large equipment
• Embedded bolt in concrete or epoxy structures

2. Types of Threaded Rods

🔹 Fully Threaded Rod

• Continuous thread over the entire length
• Used for high-tension applications and long-distance joining

🔹 Double-End Threaded Rod (Stud)

• Threads on both ends, center is smooth or milled
• Ideal for mounting motors, pumps, flanges

🔹 Left-Hand Threaded Rod

• Opposite threading direction for specific mechanical systems
• Used in rotating equipment or tension balancing

🔹 Metric & Inch Threaded Rod

• Metric: M4 to M30
• Inch: #8-32 to 1"-8 UNC or UNF

🔹 Customized Cut Rods

• Tailored to specific lengths, thread lengths, and ends (chamfered, flat, slotted)

3. Where Are Threaded Rods Used?

Threaded rods are critical in:

• 🏗 Steel frame construction and anchor bolts
• ⚙️ Heavy machinery mounting
• 🔌 Electrical cabinet bracing
• 🧱 HVAC and plumbing supports
• 🪛 Custom fabrication of fixtures and molds
• 🚗 Automotive engine assembly and exhaust systems

They’re also used for seismic bracing, curtain wall suspension, and equipment leveling bases.

4. Choosing the Right Threaded Rod

Spring force: Light, medium, heavy-duty (customizable)
Thread range: M3–M16, 4-40 to 5/8-11
Ball diameters: 2–10mm

5. Custom Options from Sango Hardware

We offer:

• 📏 Metric / Imperial threads
• 🔩 Spring tuning for exact preload force
• 🔒 Locking patch (nylon) or set screw feature
• 🎨 Surface finishes: zinc, black oxide, nickel, electropolish
• ⚙️ Tip materials: hardened steel, brass, Delrin, ceramic
• 📦 OEM kits with labeling, laser logos, RoHS documentation

6. Case Study: Spring Plungers in Precision Test Fixtures

Client: North American electronics testing device maker
Problem: Inconsistent contact alignment caused testing failures and operator fatigue

Sango Solution:

• Designed M6 threaded spring plungers with Delrin ball tips
• Medium-force spring optimized for repeated cycles
• Supplied 5000pcs/month with full QC reports

Result:

• Contact repeatability improved by 80%
• Operator adjustments reduced significantly
• Product passed customer QA with zero mechanical failures

7. Why Choose Sango Hardware for Spring Plungers?

🛠 Factory-direct production with 60+ machines

• CNC + automatic lathes + thread rollers
• Consistent torque and ball protrusion control

🔍 100% Inspected Spring Force + Dimensions

• In-house testing with torque gauge, push-pull meter, projector

📐 Prototyping and Engineering Support

• Custom samples in 5–7 days
• Threaded CAD library available

📦 Global Packaging & Export Ready

• RoHS, REACH, barcode labeling, blister packs or bulk options

8. Conclusion: Small Part, Big Precision

Whether you're working on jigs, panels, or precision modules, Spring Plungers deliver the consistency, preload, and ease of adjustment that your design demands.

Let Dongguan Sango Hardware Fasteners Co., Ltd. help you find or build the perfect spring plunger solution.