鋼板越薄，螺絲反而越難設計

很多人認為，鋼板越薄，螺絲越容易鑽入，施工自然也越簡單。

但對鑽尾螺絲來說，鑽得進去只是第一步，能不能鎖得住才是真正的難題。

薄鋼板為什麼更容易滑牙？

當螺絲鎖入較厚的鋼板時，螺紋可以與較多的材料接觸，形成較完整的咬合。

鋼板越薄，能夠讓螺紋咬住的材料就越少。一旦鑽孔太大、牙型不適合，或施工時稍微過度鎖付，就容易發生空轉與滑牙。

因此，薄鋼板常見的問題不是螺絲鑽不進去，而是：

• 鑽得進去，卻鎖不緊
• 剛鎖緊，稍微再轉就滑牙
• 螺絲看似到底，實際固定力卻不足
• 不同施工者使用，鎖付結果差異很大

螺絲不是把牙做大就能解決

要改善薄鋼板的鎖固效果，不能單純把螺紋加大或加深。

螺絲的鑽尾尺寸、牙距、牙型與螺紋外徑，都必須相互配合。除了要讓螺絲順利鑽入，也要讓有限厚度的鋼板能夠提供足夠的咬合力，並保留適當的過鎖空間。

這也是薄鋼板用螺絲真正困難的地方：

既要鎖得快，也要鎖得住；既不能太緊，也不能太容易滑牙。

竣錩持續挑戰薄鋼板鎖固問題

隨著建築材料持續輕量化，市場上的鋼板厚度逐漸降低，傳統螺紋設計也開始面臨新的挑戰。

竣錩目前正針對薄鋼板的鎖固特性，著手開發新的牙紋設計，希望改善螺絲在薄鋼板上的咬合效果、鎖付穩定性與過鎖容忍度。

鋼板越薄，越考驗螺絲真正的設計能力。

The Thinner the Steel Frame, the Harder the Screw Is to Design

Many people assume that thinner steel is easier to drill into, so the fastening process should also be easier.

However, for self-drilling screws, drilling through the steel is only the first step. The real challenge is whether the screw can hold securely.

Why Is Thin Steel More Likely to Strip?

When a screw is driven into thicker steel, more material is available for the threads to engage with, creating stronger and more complete thread contact.

The thinner the steel, the less material is available for thread engagement. If the drilled hole is too large, the thread design is unsuitable, or the screw is slightly overdriven, stripping and spinning can easily occur.

Common problems with thin steel include:

• The screw drills through but does not tighten securely
• The screw feels tight at first but strips after a slight additional turn
• The screw appears fully installed, but the actual holding strength is insufficient
• Fastening results vary significantly between different installers

Simply Making the Thread Larger Is Not the Solution

Improving fastening performance in thin steel is not as simple as making the threads larger or deeper.

The drill point diameter, thread pitch, thread profile, and major diameter must all work together. The screw must drill smoothly while allowing the limited steel thickness to form sufficient thread engagement and maintain a reasonable resistance to overdriving.

This is the true challenge of designing screws for thin steel:

They must drive quickly, hold securely, and still provide enough tolerance during installation.

Jun Fastener Is Developing a New Thread Design

As construction materials continue to become lighter, thinner steel is being used more widely, creating new challenges for traditional screw designs.

Jun Fastener is currently developing a new thread design specifically for thin-steel applications. The goal is to improve thread engagement, fastening consistency, and resistance to stripping caused by overdriving.

The thinner the steel, the more it tests the true capability of screw design.

Our new thread design is currently undergoing testing and optimization. Stay tuned.

竣錩的新牙紋設計正在持續測試與優化中，敬請拭目以待。