1/2 Inch Square Head Bolt

Product Description：

The 1/2” Galvanized Square Head Machine Bolt – ASTM A153 is a heavy-duty steel fastener specifically designed for utility, pole line, and overhead power line hardware applications. Manufactured from high-strength steel and hot dip galvanized in strict accordance with ASTM A153, this 1/2 inch square head machine bolt provides excellent corrosion resistance and reliable mechanical performance in long-term outdoor environments.

The square head design allows for firm wrench engagement, making the ASTM A153 galvanized square head machine bolt ideal for structural fastening where vibration resistance and secure tightening are required. It is widely used in pole line construction, crossarm assemblies, braces, anchors, and other utility hardware connections.

Product Advantages:

1. Hot dip galvanized to ASTM A153 for superior corrosion resistance

2. High-strength steel construction for structural fastening

3. Square head design ensures secure wrench grip

4. Excellent vibration resistance in utility installations

5. Reliable performance under harsh weather conditions

6. Compatible with standard pole line hardware and fittings

7. Long service life with reduced maintenance frequency
   

Application Scenarios：

1. Utility pole line construction and maintenance

2. Crossarm and brace fastening systems

3. Overhead power distribution structures

4. Guy wire, anchor, and hardware assemblies

5. Outdoor infrastructure and utility frameworks

How to Apply :

• Select the 1/2” galvanized square head machine bolt ASTM A153 according to structural load requirements.

• Insert the bolt through aligned holes of pole line hardware or fittings.

• Secure with matching nuts and washers for stable fastening.

• Tighten using appropriate tools to ensure proper torque.

• Inspect periodically as part of routine line maintenance.

Parameter:

Safety & Quality Assurance：

1. Manufactured from certified high-strength steel materials

2. Hot dip galvanizing strictly compliant with ASTM A153

3. Uniform coating thickness for consistent corrosion protection

4. Dimensional accuracy for reliable installation

5. Designed for long-term utility and outdoor applications
   

FAQ：

Q1: What is the main use of a 1/2” square head machine bolt?

A1: It is used for fastening pole line hardware, crossarms, and utility structures.

Q2: Why choose ASTM A153 galvanized bolts?

A2: ASTM A153 ensures excellent corrosion resistance for outdoor utility applications.

Q3: Is the square head design better than hex head for utility work?

A3: Square head bolts provide strong grip and are commonly used in traditional pole line hardware.

Q4: Can this bolt be used in coastal or humid environments?

A4: Yes, the hot dip galvanized coating offers strong protection against corrosion.

Q5: Does the bolt require special maintenance?

A5: Minimal maintenance is required under normal operating conditions.