Material: Carbon steel
Strength grades: 4.8, 8.8, 10.9, 12.9
Surface finishes: Plain / natural, blue-white zinc plated, yellow zinc plated, hot-dip galvanized, tempered blackened, Dacromet
High-strength blackened low head socket cap screw. Treated with high-temperature oxidation blackening, resulting in a black matte finish. The low head design is suitable for confined installation spaces. Cost-effective. Provides basic rust resistance; protection can be enhanced when used with lubricating oil. The appearance is understated. Suitable for applications with space constraints and moderate aesthetic requirements, such as confined areas inside machinery, small furniture, and simple equipment.