Hardened Washers – For High-Tensile Structural Fastening

Hardened washers are heat-treated, high strength flat washers specifically to be used with high tensile bolts and heavy hex nuts, particularly in the construction of steel structures, infrastructure projects, and industrial machinery. These washers are important to the distribution of clamping pressure and to the prevention of deformation under pressure at the surfaces resisting maximum load in maintaining preload in bolted joints.

These washers are a combination with either ASTM A325 or A490 structural bolts that form connections between two steel surfaces and add further possible advantage in environments subjected to dynamic loads such as bridges, tall buildings, offshore platforms, energy facilities, and heavy equipment assemblies.

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Technical Features

For hardened structural washers, the specifications may include:

1. ASTM F436 (standard in the U.S.)

2. DIN 6916 / EN 14399 (widely used in GCC & Europe)

Key specifications include:

1. Material: medium carbon steel or alloy steel

2. Hardness: typically 38–45 HRC (heat-treated)

3. Shapes: round with chamfer edges or square

4. Finishes: plain black, hot-dip galvanized, zinc-plated, or phosphate-coated

5. Sizes: Available from M12 to M36 (metric) and 1/2” to 1-1/2” (imperial)

Compatible with ISO, ASTM, and British Standards-compliant fasteners, the world’s measurement standards are variable in project application.

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Applications

Hardened washers perform an essential role in bolted connections within the following structures:

1. Structural steel buildings

2. Pre-engineered metal buildings (PEBs)

3. Bridge expansion joints and base plates

4. Wind & solar energy towers

5. Transmission lines and substations

6. Oil & gas processing facilities

7. Heavy machinery and foundation bolts

In general, these washers are applied in locations where vibration, movement, and heavy axial or lateral loads are expected — ensuring that tension in the bolt remains constant over long periods of time.

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Global Fasteners – Trusted by Industry Leaders

The leading supplier of hardened washers in the UAE, catering to clients in Dubai, Abu Dhabi, Sharjah, Ajman, and beyond within the GCC. Our washers are:

1. Accompanied by Material Test Certificates (MTCs)

2. Packaged in bulk for projects

3. Available for urgent delivery and in stock

Clients include contractors, steel fabricators, EPC firms, and OEMs.

Supplying Across:

🇶🇦 Qatar | 🇸🇦 Saudi Arabia | 🇮🇶 Iraq | 🇮🇷 Iran | 🌍 GCC | 🇧🇭 Bahrain

Global Fasteners, the most preferred and trusted supplier to its customers for all fastening solutions, is your ultimate source for Hardened Washers that perform!