Timco 镀锌金属木材与钢自攻螺丝 4.2x38mm 沉头 200只装

Timco金属建筑木材与轻型钢专用自攻螺丝专为牢固固定木材与轻型钢材（最大厚度3mm）而设计，采用粗牙自攻螺纹及翼尖设计，确保安装更轻松。翼片在木材中扩孔以减少高温烧伤后折断，从而使螺丝可轻松自攻入钢材。

特殊功能

• **自钻式尖头（3号）**无需预钻孔，节省时间和精力。
• 带肋沉头设计确保安装时平整且增加抓握力。
• 镀锌表面提供防腐蚀性能，延长使用寿命。
• 芯部硬化碳钢材质，确保卓越的强度和耐用性。
• 有效螺纹长度19毫米，确保钢材中的牢固固定。

适用场景

• 木材与3mm以内的钢材固定连接。
• 需要快速且安全的紧固，免除预钻孔要求的应用场景。

每包含200颗螺丝，非常适合专业建筑项目和DIY需求，适用于高效、可靠的紧固需求。Special Features

• Self-drilling point (No. 3) eliminates the need for pre-drilling, saving time and effort.
• Countersunk head with ribs ensures a flush finish and improved grip during installation.
• Zinc finish provides corrosion resistance, enhancing durability.
• Made from case & core hardened carbon steel for superior strength and longevity.
• Maximum effective thread length of 19mm ensures a firm hold in metal.

Ideal for

• Joining timber to steel sections up to 3mm thick.
• Applications requiring quick and secure fastening without pre-drilling.

With 200 screws per pack, this product is perfect for both professional and DIY projects requiring reliable and efficient fastening solutions.