Description
The M8-1.25 Flat Head Socket Cap Screw is a mid-to-large diameter precision fastener designed for applications requiring a flush, countersunk finish without compromising structural integrity. Featuring a flat head profile with an internal hex drive, it enables secure torque application while maintaining a sleek, recessed surface—ideal for assemblies requiring unobstructed, clean surfaces.
Specifications
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Thread Size: M8 × 1.25 (ISO Metric Coarse)
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Head Type: Flat head with internal hex socket (countersunk)
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Drive Type: Hex socket (Allen)
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Length: Commonly available in standard metric lengths from 10mm to 100mm
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Material: High-strength alloy steel; also available in stainless steel, zinc-plated, or black oxide finishes
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Finish Options: Black oxide, plain, zinc-plated, or full stainless steel
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Property Class: Typically Class 8.8 or 10.9 (alloy steel); A2-70 or A4-80 (stainless steel)
Key Features
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Flush-Fit Head Design: The flat, countersunk head allows the fastener to sit flush with or below the surface, providing a smooth, snag-free profile for moving parts or aesthetic assemblies.
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Standard Coarse Thread: The 1.25mm pitch provides secure thread engagement and reduces the risk of loosening due to vibration.
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Precision Torque Control: Internal hex socket ensures reliable torque application in compact or recessed areas with minimal tool slippage.
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Durable and Corrosion-Resistant: Stainless steel and protective coatings support use in outdoor, industrial, or moisture-exposed environments.
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Strength and Precision: Ideal for situations demanding high strength and a professional, concealed finish.
Typical Applications
The M8-1.25 Flat Head Socket Cap Screw is ideal for:
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Machinery Components Requiring Flush Surfaces
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Automotive and Motorsport Interior/Body Panels
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Aerospace and Defense Mounting Assemblies
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Robotics and Automation Enclosures
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Bicycles, Motorcycles, and Powersports Equipment
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DIY Projects, Custom Builds, and Fabrication Work Requiring Smooth Surface Continuity
