GB/T 15856.4 Hex Flange Head Self-Drilling Screws

High-quality hex flange head self-drilling screws made from carbon steel, featuring a full coarse thread and durable color zinc plating. Designed to meet GB/T 15856.4 standards with a 4.8-grade performance.

Material: Carbon Steel Implementation Standards: GB/T 15856.4 Nominal diameter: nullmm Nominal length: nullmm Full thread / Partial thread: full thread Surface color: color Tooth type: coarse thread Performance level: 4.8 Surface treatment: Electroplated color zinc type: Self-tapping screws