Screw Lab Test: Surface Hardness, Core Hardness & Tapping Speed – Pass or Fail?

In this video, we will subject a screw to three critical laboratory tests to determine whether it is fit for real-world application. No speculation, no shortcuts—just hard data.

🔩 You will see:

Surface Hardness Test (Wear Resistance)

Core Hardness Test (Brittleness vs. Toughness)

Tapping Speed ​​Test (Real-World Assembly Performance)

If the screw fails any one of these tests, it signifies that it cannot meet the required standards in practical application scenarios.

Видео Screw Lab Test: Surface Hardness, Core Hardness & Tapping Speed – Pass or Fail? канала Screw Manufacturer AnHui LingHong