304-A2 Stainless Steel Threaded Rods

What Is 304-A2 Stainless Steel Threaded Rod?

304-A2 threaded rods are manufactured from AISI 304 stainless steel (EN 1.4301) and classified as A2 under ISO 3506. This material contains approximately 18% chromium and 8% nickel, forming a stable austenitic structure that delivers good corrosion resistance, formability, and toughness.Compared with ordinary steel rods, A2 stainless steel does not rely on surface coatings for protection, ensuring long-term performance without peeling or zinc loss.

 

Are you looking for reliable stainless steel threaded rods that balance strength, corrosion resistance, and cost efficiency?304-A2 stainless steel threaded rods are one of the most widely used fastening solutions for construction, machinery, and industrial assembly. Known for stable mechanical performance and good resistance to atmospheric corrosion, A2 threaded rods offer a practical alternative to carbon steel and galvanized fasteners in non-aggressive environments.

GNEE supplies 304 / A2 stainless steel threaded rods in full sizes and standards, supporting OEM, distributors, and project contractors worldwide.

Advantages of 304-A2 Stainless Steel Threaded Rods

✔ Good corrosion resistance in indoor and urban environments
✔ No coating required, eliminating peeling or flaking risks
✔ Excellent machinability and thread consistency
✔ Non-magnetic in annealed condition
✔ Lower cost than A4 / 316, ideal for budget-controlled projects

In many general applications, 304-A2 threaded rods provide a longer service life than galvanized rods, with more stable performance over time.

 

Specifications of 304-A2 Threaded Rods

Item	Specification
Product Name	Fully Threaded Rod
Rod Type	Threaded Rod / Tie Rod
Material	Stainless Steel
Material Grade	A2 (AISI 304) / A4 (AISI 316)
Strength Grade	A2-70 / A4-70 (optional)
Thread Type	Full Thread
Thread Standard	Metric / UNC / UNF (optional)
Surface Finish	Plain (Natural Stainless Steel)
Thread Direction	Right Hand
Size & Length	As per standard or customized length
Manufacturing Process	Cold Drawn Bar + Thread Rolling
Application	Construction, Pipe Support, Flange Connection, Mechanical Assembly
Customization	Diameter, length, thread standard, material grade, packaging

 

Chemical Composition of 304-A2 Stainless Steel

Element	Typical Content (%)
Carbon (C)	≤ 0.08
Chromium (Cr)	18.0 – 20.0
Nickel (Ni)	8.0 – 10.5
Manganese (Mn)	≤ 2.0
Silicon (Si)	≤ 1.0
Phosphorus (P)	≤ 0.045
Sulfur (S)	≤ 0.030

 

Mechanical Properties (ISO 3506)

Property	A2-70
Tensile Strength (MPa)	≥ 700
Yield Strength (MPa)	≥ 450
Elongation	≥ 0.4d
Hardness (HV)	≤ 215

d = nominal diameter

 

Typical Applications of 304-A2 Stainless Steel Threaded Rods

304-A2 threaded rods are commonly selected for projects requiring moderate corrosion resistance and mechanical reliability:

Building and structural connections

HVAC systems and ventilation supports

Machinery frames and equipment installation

Food processing and packaging equipment

Electrical cabinets and enclosures

Indoor and semi-outdoor industrial facilities

 

GNEE supplies 304-A2 stainless steel threaded rods that undergo rigorous quality control, including dimensional accuracy checks (within ±0.1 mm), surface roughness testing, tensile and hardness testing. The products are certified under the ISO 9001 quality management system, and third-party

inspection reports (such as SGS/BV reports) are available. Certificates and test data are provided with the shipment, ensuring traceable quality.

 

For packaging and transportation, the products are protected with moisture-proof and shock-resistant packaging (plastic sleeves, bubble wrap reinforcement, standard export wooden crates/pallets) and shipped via reputable logistics channels by sea or air, ensuring no damage or oxidation contamination during transit.

FAQ

1. What is A2 stainless steel threaded rod?
A2 threaded rod is made from 304 stainless steel and classified under ISO 3506 for general corrosion-resistant fastening.

2. Is 304-A2 stainless steel suitable for outdoor use?
It performs well in mild outdoor conditions but is not recommended for marine or chloride-rich environments.

3. What is the difference between A2 and A4 threaded rods?
A2 uses 304 stainless steel, while A4 is based on 316 with added molybdenum for higher corrosion resistance.

4. Are A2 threaded rods stronger than galvanized steel rods?
Yes, A2-70 threaded rods typically offer higher tensile strength and more stable long-term performance.

5. Can 304-A2 threaded rods be used in food equipment?
Yes, 304 stainless steel is widely accepted for food and hygiene-related equipment when properly finished.