Brand: ShiJingChangTian
Material: Carbon Steel
MOQ: 1000pcs
Delivery Time: 7-30days
Surface Treatment: Black Oxide
Packaging: We will pack and ship according to customer's requirements
Transportation: Ocean
Place of Origin: Handan, Hebei, China
Supply Ability: Our company has its own factory and can complete it efficiently and quickly
Port: Shanghai,Lianyungang
Black Hexagon Hex Bolt Screw – High-Strength Fastening Solution for Industrial and Construction Applications
Engineered for durability, precision, and reliability, this black hexagon hex Bolt screw is a premium fastener designed to meet the demands of modern engineering projects. Whether used in structural assembly, machinery mounting, or outdoor construction, it delivers consistent performance under high torque and harsh environmental conditions. With multiple material options—including carbon steel, alloy steel, and stainless steel—and advanced surface treatments like black oxide and hot-dip galvanizing, this screw offers versatility across diverse industries such as manufacturing, automotive, aerospace, and infrastructure development.
Key features include a standardized hexagonal head design that ensures optimal grip with standard tools, preventing slippage during installation. The clean, uniform threading provides smooth engagement and minimizes stress concentration, reducing the risk of thread stripping or deformation. Each unit undergoes meticulous craftsmanship to eliminate burrs and imperfections, enhancing longevity and safety in critical applications. For added corrosion resistance, especially in humid or chemically aggressive environments, the black ultra-corrosion-resistant coating complies with ASTM B117 standards, offering up to 1,000 hours of salt spray protection when paired with compatible hardware.
The product line supports customization in size, length, and finish, making it adaptable for both OEM production lines and bespoke installations. Available in grades such as 8.8 high-strength steel, these bolts combine excellent tensile strength, heat resistance, and mechanical stability—ideal for heavy-duty fastening tasks where failure is not an option. Surface finishes like white/yellow zinc plating provide aesthetic appeal alongside moderate corrosion resistance, while black oxide treatment offers a sleek, low-visibility appearance suitable for industrial aesthetics or concealed applications.
Common use cases span from framing and decking to machine base anchoring, metal fabrication, and general maintenance work. It’s particularly favored by contractors, engineers, and DIY professionals who prioritize long-term structural integrity over short-term cost savings. Compatible with washers and nuts of matching coatings, this fastener system ensures uniform performance and prevents galvanic corrosion in multi-material assemblies.
Users consistently report satisfaction with the screw's ease of installation, consistent torque response, and ability to maintain clamping force over extended periods. Many highlight its suitability for both indoor and outdoor projects, citing reduced maintenance needs and fewer replacements compared to standard-grade alternatives. Its robust build makes it a preferred choice among professionals seeking reliable, repeatable results in demanding environments.
Frequently asked questions often center around compatibility with existing tools (yes—standard wrenches and sockets fit perfectly), expected lifespan under various conditions (typically 10+ years in dry indoor settings, longer with proper surface treatment), and whether it resists rust in coastal areas (with black oxide or hot-dip galvanized variants, yes—with recommended配套 components). Some inquire about availability in metric vs. imperial sizes; the product range includes both systems to support global sourcing requirements.