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Home Product 5/16-18*3 SAE Grade 8 Bolt Zinc-Plated Heavy-Duty Construction Fastener

5/16-18*3 SAE Grade 8 Bolt Zinc-Plated Heavy-Duty Construction Fastener

5/16-18 Machine Screw
18 Thread Per Inch Bolt
3 Inch Machine Screw
5/16-18*3
5/16-18 Machine Screw with 18 Threads Per Inch, 3 Inch Length Precision Fastener for Machinery, Equipment, and Industrial Assembly. Zinc-Plated Steel Hex Bolt for Secure Threaded Connections.

Product Description

The 5/16-18 Machine Screw is a high-performance fastener engineered for precision assembly, featuring an 18 Thread Per Inch Bolt design with a 3-inch shaft length for secure mechanical integration in industrial applications. Crafted from hardened steel, it operates reliably across a temperature range of -40°C to 150°C, suitable for automotive, aerospace, and heavy machinery sectors. This screw ensures robust connectivity in modular systems, supporting direct mounting for panels, brackets, or equipment frames. Its coarse 18 TPI threading enhances grip strength while reducing cross-threading risks. Ideal for high-vibration environments, it offers exceptional shear resistance but may require anti-corrosive treatment in humid conditions. The 3-inch length allows deep material penetration, accommodating thicker assemblies. Installation is simplified with standard hex drivers, and its uniform thread pitch ensures consistent torque distribution. While lacking electronic components, its durable build and universal compatibility make it indispensable for structural fastening, though oversizing may limit use in compact spaces.
Parameter Specification
Thread Diameter 5/16 Inch (0.3125") / 7.94 mm
Threads Per Inch (TPI) 18
Shank Length 3 Inch (76.2 mm)
Thread Type Unified National Coarse (UNC)
Material Grade Grade 2 Steel / 18-8 Stainless Steel
Surface Treatment Zinc Plated / Plain Finish
Head Style Pan Head / Flat Head / Hex Head
Drive Type Phillips / Slotted / Socket
Mechanical Properties 60,000 PSI Tensile Strength (Grade 2)
question:Does the company have a professional product selection engineering team?
answer:Yes, we have a dedicated team specializing in product research and selection.
question:Can the company provide upgraded or alternative models?
answer:Yes, we offer upgraded models and alternatives based on availability and requirements.
question:Can I self-schedule official courier pickup for my order?
answer:Yes, self-scheduling courier pickup is available through our logistics partners.
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:Does the company have a professional product selection engineering team?
answer:Yes, we have a dedicated team specializing in product research and selection.
question:Can the company provide upgraded or alternative models?
answer:Yes, we offer upgraded models and alternatives based on availability and requirements.
question:Can I self-schedule official courier pickup for my order?
answer:Yes, self-scheduling courier pickup is available through our logistics partners.
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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