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Home Product 5/16-18x4 Hex Flange Bolt Grade 8 Zinc Plated Fastener for Automotive & Machinery Hardware
US hexagon socket head cap 5/16-18*4

5/16-18x4 Hex Flange Bolt Grade 8 Zinc Plated Fastener for Automotive & Machinery Hardware

5/16-18x4 bolts
18 TPI machine screws
5/16-18 hex screws
5/16-18*4
5/16-18x4 bolts with 18 TPI machine screws for precision threading in machinery, automotive, and construction. Includes 5/16-18 hex screws (4-inch length) compatible with wrenches/sockets. Durable, corrosion-resistant finish, compliant with ASME/SAE standards.
Categories:Fasteners & Fixings
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Product Description

The 5/16-18x4 bolts are precision-engineered fasteners designed for industrial applications requiring durable, high-strength connections. These 18 TPI machine screws feature a 5/16-18 thread specification and a 4-inch shaft length, ensuring compatibility with standard hex drive tools. Manufactured from hardened steel, the 5/16-18 hex screws are ideal for machinery assembly, automotive components, and structural frameworks, offering tensile strength up to 150 ksi. They operate reliably in temperatures from -50°C to 250°C and withstand vibration-heavy environments. Key advantages include corrosion-resistant coatings, precise threading for secure fastening, and compatibility with pre-threaded modules. A minor drawback is their requirement for precise torque alignment during installation. These bolts are widely used in aerospace, heavy equipment, and construction industries, where reliability under high stress is critical. While lacking electrical components or communication interfaces, their robust design ensures longevity in demanding mechanical systems.
Parameter Specification
Thread Size 5/16-18 UNC
Threads Per Inch (TPI) 18 TPI
Fastener Length 4"
Thread Pitch 0.0556"
Hex Head Size 1/2" across flats
Material Grade ASTM A574 / SAE J429 Grade 8
Tensile Strength 150,000 psi min
Surface Finish Zinc-plated or Black Oxide
Drive Type Hexagonal Head
Thread Engagement 1.5D minimum
Torque Specification 22-25 ft-lbs (dry)
Application 18 TPI Machine Screws, 5/16-18 Hex Screws
question:Can I schedule a self-pickup with official courier services?
answer:No, we handle all logistics to ensure secure and timely delivery through our partnered official couriers.
question:Why choose your company for industrial automation products?
answer:As Asia's leading industrial automation supplier, we offer reliable products, 20 years of expertise, strong reputation, and 85% repeat customers ensure trust.
question:Do you have a professional product selection engineering team?
answer:Yes, our expert engineering team meticulously selects and tests products for optimal performance and quality compliance.
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 I schedule a self-pickup with official courier services?
answer:No, we handle all logistics to ensure secure and timely delivery through our partnered official couriers.
question:Why choose your company for industrial automation products?
answer:As Asia's leading industrial automation supplier, we offer reliable products, 20 years of expertise, strong reputation, and 85% repeat customers ensure trust.
question:Do you have a professional product selection engineering team?
answer:Yes, our expert engineering team meticulously selects and tests products for optimal performance and quality compliance.
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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