Industrial-grade Grade 12.9 US UNF fine thread screws, available in three key sizes (7/16-20, 1/2-20, 5/8-18), featuring a cylinder head hex design. Engineered for high-strength fastening, these precision screws combine superior tensile strength, UNF thread accuracy, and durable construction, ideal for heavy-duty machinery, automotive assemblies, and industrial fixtures requiring reliable, high-load performance.
Core Features & Advantages
Grade 12.9 High-Strength Alloy Steel: Crafted from premium alloy steel with Grade 12.9 tensile strength, delivering exceptional shear resistance and load-bearing capacity. Suitable for high-stress industrial applications, withstanding heavy loads without deformation or failure.
Triple UNF Fine Thread Sizes: Covers 7/16-20, 1/2-20, 5/8-18 UNF (Unified Fine Thread) specifications. Precisely machined threads adhere to US imperial standards, ensuring seamless compatibility with UNF nuts, taps, and hex tools for versatile assembly needs.
US Cylinder Head Hex Design: Cylinder head provides stable torque transfer, while the hex (Allen) drive enables precise tightening in confined spaces. Minimizes slippage and head damage, facilitating efficient installation and maintenance.
Industrial-Grade Precision: Strict quality control ensures uniform dimensions, consistent threading, and reliable interchangeability. Meets industrial standards for heavy-duty fastening in automotive, machinery, and manufacturing sectors.
Versatile Heavy-Duty Application: Designed for high-load scenarios, including heavy machinery, automotive powertrains, industrial fixtures, and equipment requiring robust, long-lasting fasteners.
Specifications
Material: Grade 12.9 High-Strength Alloy Steel
Thread Standard: US UNF Fine Thread (7/16-20, 1/2-20, 5/8-18)
