Description
The M8-1.25 Socket Head Cap Screw is a heavy-duty, precision-engineered metric fastener designed for demanding mechanical and structural applications. Its cylindrical head with an internal hex drive ensures efficient torque transmission and clean, flush installation in counterbored holes—making it ideal for high-stress environments requiring reliable, compact fastening.
Specifications
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Thread Size: M8 × 1.25 (ISO Metric Coarse)
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Head Type: Cylindrical socket head with internal hex drive
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Drive Type: Hex socket (Allen)
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Length Range: Commonly available from 12mm to 120mm in standard metric sizes
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Material Options: High-strength alloy steel, stainless steel (A2/A4), brass, or custom materials
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Finish Options: Black oxide, zinc-plated, plain, or stainless steel
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Property Class: Typically Class 12.9 (for alloy steel) or A2-70 / A4-70 (for corrosion-resistant stainless steel)
Key Features
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High Load Capacity: Suitable for assemblies requiring superior tensile strength and resistance to shear forces.
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Coarse Thread Profile: The 1.25mm pitch promotes quick installation, solid thread engagement, and vibration resistance.
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Hex Socket Drive: Allows for precise torque control and low-profile installation, ideal for confined spaces or recessed holes.
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Corrosion-Resistant Finishes: Multiple finish options available to suit environmental exposure, from industrial plants to outdoor use.
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Standardized Fit: Easily interchangeable with ISO-standard M8 fasteners for global compatibility.
Typical Applications
The M8-1.25 Socket Head Cap Screw is widely used in:
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Industrial Machinery and Mechanical Assemblies
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Structural Frames, Support Systems, and Fabrication
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Automotive Mounting Brackets, Chassis Components, and Suspension
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CNC Machines, Robotics, and Motion Systems
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Outdoor Equipment, Construction Fixtures, and Steel Structures
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Marine, Aerospace, and High-Performance Engineering Projects
