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Home Product 5/16-18*5/8 SAE Grade 8 Hex Head Cap Screw Zinc Plated Hardware Fastener
US hexagon socket head cap 5/16-18*5/8

5/16-18*5/8 SAE Grade 8 Hex Head Cap Screw Zinc Plated Hardware Fastener

5/16-18 UNC Bolt
5/8 Hex Head Screw
18TPI Threaded Fastener
5/16-18*5/8
5/16-18 UNC Bolt with 5/8 Hex Head Screw, 18TPI Threaded Fastener for durable industrial fastening applications. Coarse thread design ensures robust mechanical grip.
Categories:Fasteners & Fixings
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Product Description

The 5/16-18 UNC Bolt is a precision-engineered 18TPI threaded fastener designed for high-torque applications, featuring a durable 5/8 hex head screw configuration for secure tool engagement. With a nominal diameter of 5/16" (7.94 mm) and 18 threads per inch, it provides optimal tensile strength up to 150 MPa, compatible with standard UNC thread patterns. The zinc-plated steel construction ensures corrosion resistance in operating temperatures ranging from -30°C to 120°C, making it ideal for automotive assembly, industrial machinery, and structural frameworks. Its hex head design enables 12-point wrench compatibility, delivering 30-40 Nm recommended tightening torque. Advantages include vibration resistance and easy installation, though prolonged exposure to saline environments may reduce coating efficacy. No electrical/communication interfaces or power requirements apply, as this mechanical fastener operates purely through physical load-bearing.
ParameterSpecification
Thread Specification5/16-18 UNC Bolt
Head Style5/8 Hex Head Screw
Thread Density18 TPI Threaded Fastener
Major Diameter0.3125 inch
Thread Length0.625 inch
Drive TypeHex Key (5/16")
Material GradeASTM A307 Grade B
Surface FinishZinc Plated
Torque Capacity15-20 lbf·ft
Tensile Strength74,000 psi min
question:Can we request photos and purchase dates of similar products?
answer:Yes, we can provide photos and purchase details upon request to verify product authenticity.
question:Is self-pickup via official courier available?
answer:Yes, you can schedule self-pickup with our partnered couriers by coordinating logistics in advance.
question:Do you support low-value declaration for shipments?
answer:Low-value declaration is possible based on destination regulations and prior arrangement with our team.
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:Can we request photos and purchase dates of similar products?
answer:Yes, we can provide photos and purchase details upon request to verify product authenticity.
question:Is self-pickup via official courier available?
answer:Yes, you can schedule self-pickup with our partnered couriers by coordinating logistics in advance.
question:Do you support low-value declaration for shipments?
answer:Low-value declaration is possible based on destination regulations and prior arrangement with our team.
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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