High-Strength Grade 8 Steel Hex Head Screws

Name: High-Strength Steel Hex Head Screws with Material Certification

Material: Carbon steel, Stainless steel SUS304, SUS316

1. These screws come with a traceable lot number and a physical and chemical test report. Made from Grade 8 steel, they can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws. The zinc yellow-chromate plating resists corrosion in wet environments. The material meets SAE J429 specifications for quality. Dimensions meet ASME B18.2.1 specifications. Grade 8 steel hex head screws are marked with six radial lines. Length is measured from under the head.

2. High-Strength Grade 8 Steel Hex Head Screws. Made from Grade 8 steel, these screws can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws. Grade 8 steel hex head screws are marked with six radial lines. Length is measured from under the head. Black-oxide steel screws are mildly corrosion-resistant in dry environments. Zinc yellow-chromate plated steel screws resist corrosion in wet environments. Zinc-flake-coated steel screws are about five times as corrosion resistant as zinc yellow-chromate plated screws and have good resistance to salt water and acids. Also known as ultra coat and armor coat. To maintain corrosion resistance, use these screws with zinc-flake-coated nuts and washers. Match the thread spacing of mating components. Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch. Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance. Screws that meet ASTM A354BD or SAE J429 comply with specifications and testing requirements for material quality. Screws that meet ASME B18.2.1 or ASME B18.6.3 comply with specifications for dimensional standards.

Size Can also be According to the Customer's requirement for manufacturing, please check the detailed specification sheet details PDF, CAD, 169-170 Page See more product details.

Packaging: The inner packaging is a plastic bag, and the outer packaging is a carton. Then the tray. Carton size: 29*19*19.5cm and 23.5*17.5*8, cm and pallet size: 215*100*90cm, or as your request.