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Home Product 5/16-18x1-1/8 Hex Bolt, Stainless Steel Grade 8 Heavy Duty Fastener for Automotive
US hexagon socket head cap 5/16-18*1-1/8

5/16-18x1-1/8 Hex Bolt, Stainless Steel Grade 8 Heavy Duty Fastener for Automotive

5/16-18 x 1-1/8 bolt
1-1/8 inch Grade 8 screw
5/16-18 UNC thread fastener
5/16-18*1-1/8
5/16-18 x 1-1/8 inch Grade 8 bolt with UNC threads, heavy-duty steel hex screw fastener for industrial applications.
Categories:Fasteners & Fixings
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Product Description

The 5/16-18 x 1-1/8 bolt is a precision-engineered 1-1/8 inch Grade 8 screw designed for heavy-duty industrial applications, including machinery assembly, construction, and automotive systems. Featuring a 5/16-18 UNC thread fastener configuration, it provides high tensile strength (minimum 150,000 psi) and exceptional resistance to shear stress. With a zinc-plated or hot-dipped galvanized finish, it offers corrosion resistance in harsh environments. Operating within a temperature range of -65°F to 300°F (-54°C to 149°C), this fastener is compatible with standard 5/16-18 nuts and tools. While lacking integrated electronics (no power input/output, communication interfaces, or sensing capabilities), its primary advantage lies in durability under extreme loads. The Grade 8 classification ensures superior hardness compared to lower-grade alternatives, though proper torque calibration is critical to prevent thread stripping during installation. Not applicable for battery-powered, screen-equipped, or wireless systems due to its purely mechanical design.
Parameter Specification
Fastener Type 5/16-18 x 1-1/8 Bolt
Thread Standard 5/16-18 UNC Thread
Overall Length 1-1/8 Inch
Material Grade Grade 8 Screw
Nominal Diameter 0.3125 Inch (5/16")
Thread Pitch 18 TPI (Threads Per Inch)
Tensile Strength 150,000 PSI Min
Surface Treatment Zinc Plated or Plain Finish
Drive Type Hex Head or Machine Thread
Compliance Standard ASTM A574 / SAE J429
question:Why is there a handling fee?
answer:The handling fee covers transaction processing, documentation, and administrative costs for smooth order execution.
question:What is the warranty policy?
answer:Products are covered by a manufacturer warranty against defects; terms vary by item and supplier agreement.
question:Can you share shipment photos or purchase dates?
answer:Yes, we provide shipment photos and purchase details upon request to ensure transparency and verification.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:Why is there a handling fee?
answer:The handling fee covers transaction processing, documentation, and administrative costs for smooth order execution.
question:What is the warranty policy?
answer:Products are covered by a manufacturer warranty against defects; terms vary by item and supplier agreement.
question:Can you share shipment photos or purchase dates?
answer:Yes, we provide shipment photos and purchase details upon request to ensure transparency and verification.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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