Description
The 7/8"-9 Socket Head Cap Screw is an ultra-heavy-duty fastener engineered for high-load, high-torque industrial applications where strength, precision, and compact installation are critical. Featuring a cylindrical socket head with an internal hex drive, this fastener ensures efficient torque transfer and superior tensile strength, making it ideal for mission-critical assemblies and heavy structural frameworks.
Specifications
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Thread Size: 7/8"-9 (Unified National 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: Available in standard lengths (typically from 1-1/2" to 12"+)
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Material: High-strength alloy steel; also available in stainless steel, black oxide, or zinc-plated options
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Finish Options: Black oxide, plain, zinc-plated, or stainless
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Grade: Typically Grade 8 (alloy steel) or 18-8 / 316 stainless steel for corrosion resistance
Key Features
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Maximum Load Capability: Designed for extreme tensile and shear loads, ideal for applications requiring uncompromising strength and durability.
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Precision Threading: Machined to meet Unified National Coarse (UNC) standards for secure engagement with 7/8"-9 tapped holes or high-strength nuts.
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Compact Power: The low-profile cylindrical head allows for recessed or flush mounting while maintaining outstanding clamping force.
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Hex Socket Control: The internal hex drive ensures consistent torque application with reduced risk of stripping under high load.
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Corrosion-Resistant Options: Stainless steel and coated finishes are available to ensure long-term performance in corrosive or outdoor environments.
Typical Applications
The 7/8"-9 Socket Head Cap Screw is ideal for the most demanding applications across major industrial sectors:
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Structural Steel Frameworks and Bridge Assemblies
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Heavy Machinery, Cranes, and Lifting Equipment
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Military and Aerospace Ground Equipment
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Mining and Aggregate Processing Systems
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Presses, Dies, and Industrial Foundations
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Marine and Offshore Platforms (in stainless steel)
