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Suzhou Socket Head Cap Bolt
QS Fastener: Suzhou Socket Head Cap Bolt
Product: Suzhou Socket Head Cap Bolt
Dimension: 1-1/8 IN
Surface Treatment: Hot Dip Galvanized, HDG
Length: 100 mm
Material: ASTM A320 Gr. L7M
Standard: ASME B18.3, GB 70.1
Dimension: 1-1/8 IN
Surface Treatment: Hot Dip Galvanized, HDG
Length: 100 mm
Material: ASTM A320 Gr. L7M
Standard: ASME B18.3, GB 70.1
Quantity
Our Socket Head Cap Bolt (1-1/8"diameter, 100mm length) is a high-strength, corrosion-resistant fastening solution engineered for critical industrial and infrastructure applications. Manufactured from premium ASTM A320 Gr. L7M alloy steel, this bolt offers superior mechanical properties, including excellent tensile strength and impact toughness at low temperatures. The Hot Dip Galvanized (HDG) coating provides a thick, metallurgically bonded zinc layer that delivers long-term cathodic protection, ensuring outstanding performance in aggressive environments.
Standards & Dimensions
This hex socket head cap screw is precisely manufactured to comply with both ASME B18.3 and GB 70.1 dimensional standards, ensuring global interchangeability and reliable fit. The 1-1/8 inch nominal size and 100mm grip length are optimized for heavy-duty bolted connections, offering ample thread engagement and clamp load for demanding assemblies.
This hex socket head cap screw is precisely manufactured to comply with both ASME B18.3 and GB 70.1 dimensional standards, ensuring global interchangeability and reliable fit. The 1-1/8 inch nominal size and 100mm grip length are optimized for heavy-duty bolted connections, offering ample thread engagement and clamp load for demanding assemblies.
Key Features & Engineering Advantages
- Superior Material (L7M): ASTM A320 Gr. L7M is a quenched and tempered chromium-molybdenum steel specifically designed for low-temperature service (down to -50°C/-58°F). It combines high proof stress (≥725 MPa) with excellent ductility, reducing the risk of brittle fracture in cold climates.
- High-Corrosion HDG Coating: Unlike thin electroplated finishes, our hot dip galvanized coating (minimum 85µm per ASTM A153) provides superior sacrificial protection against rust, saltwater, and chemical exposure. This makes the bolt ideal for outdoor, marine, and wastewater treatment settings.
- Precision Hex Socket Drive: The deep, cold-formed hex socket allows for high-torque transmission without cam-out, enabling precise tensioning using standard hex keys or power tools. The smooth, radiused fillet under the head reduces stress concentration, extending fatigue life.
- Superior Material (L7M): ASTM A320 Gr. L7M is a quenched and tempered chromium-molybdenum steel specifically designed for low-temperature service (down to -50°C/-58°F). It combines high proof stress (≥725 MPa) with excellent ductility, reducing the risk of brittle fracture in cold climates.
- High-Corrosion HDG Coating: Unlike thin electroplated finishes, our hot dip galvanized coating (minimum 85µm per ASTM A153) provides superior sacrificial protection against rust, saltwater, and chemical exposure. This makes the bolt ideal for outdoor, marine, and wastewater treatment settings.
- Precision Hex Socket Drive: The deep, cold-formed hex socket allows for high-torque transmission without cam-out, enabling precise tensioning using standard hex keys or power tools. The smooth, radiused fillet under the head reduces stress concentration, extending fatigue life.
Typical Application Scenarios
This socket head cap bolt is the preferred choice for:
- Heavy Machinery Assembly: Mining equipment, agricultural implements, and material handling systems requiring high clamping forces and vibration resistance.
- Construction & Infrastructure: Steel structure connections, bridge railings, highway signposts, and transmission towers where long-term weather resistance is mandatory.
- Energy & Utility: Wind turbine towers, oil/gas pipeline supports, and petrochemical plant platforms, especially in cold or coastal regions where ASTM A320 L7M is often specified by project engineers.
- Flange & Valve Connections: Use with hardened washers to evenly distribute load in high-pressure piping systems.
This socket head cap bolt is the preferred choice for:
- Heavy Machinery Assembly: Mining equipment, agricultural implements, and material handling systems requiring high clamping forces and vibration resistance.
- Construction & Infrastructure: Steel structure connections, bridge railings, highway signposts, and transmission towers where long-term weather resistance is mandatory.
- Energy & Utility: Wind turbine towers, oil/gas pipeline supports, and petrochemical plant platforms, especially in cold or coastal regions where ASTM A320 L7M is often specified by project engineers.
- Flange & Valve Connections: Use with hardened washers to evenly distribute load in high-pressure piping systems.
Quality Assurance & Supply
Each batch undergoes rigorous dimensional inspection, hardness testing, and coating thickness verification. We offer full traceability documentation per EN 10204 3.1 upon request. Backed by years of fastening expertise, our Hot Dip Galvanized Socket Head Cap Bolt delivers unmatched reliability, safety, and service life – reducing maintenance costs and downtime for your most critical projects.
Each batch undergoes rigorous dimensional inspection, hardness testing, and coating thickness verification. We offer full traceability documentation per EN 10204 3.1 upon request. Backed by years of fastening expertise, our Hot Dip Galvanized Socket Head Cap Bolt delivers unmatched reliability, safety, and service life – reducing maintenance costs and downtime for your most critical projects.
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