Zhonggongbang Hex Head Self-Drilling Screws

These Zhonggongbang Hex Head Self-Drilling Screws are crafted from durable alloy steel with a vibrant color zinc surface treatment, providing excellent corrosion resistance. Each screw features a 5.5mm nominal diameter and 50mm nominal length, designed for robust fastening applications. Conforming to GBT5782-2000 standard, this variant (1022A) comes in a box of 250 pieces, suitable for a wide range of construction and DIY projects.

Material: alloy steel Surface treatment: Color zinc type: Hex socket tenon screw Implementation Standards: GBT5782-2000 Nominal length: 50mm Nominal diameter: 5.5mm Performance level: Not involved