Timco 153Y Window Fabrication Screws Countersunk Self-Drilling Yellow M4 x 25

This TIMCO window fabrication screw combines a countersunk head with a Phillips recess and a metric thread to provide a self-drilling point for quick, reliable fastening. It serves as an alternative to self-tapping screws and is suitable for fitting various hardware to frames that include steel reinforcement. The screw is designed for applications requiring a compact M4 x 25 size and is described as a self-drilling, countersunk, PH-metric threaded fastener. Additionally, it is specified as being made from carbon steel and has undergone salt spray testing to assess corrosion resistance. These characteristics position the screw as a practical option for PVC window frames and related hardware installations that involve reinforced framing materials.

Features

• Countersunk PH metric-thread self-drilling screw
• M4 x 25 size
• For frames with steel reinforcement
• Alternative to self-tapping thread
• Made from carbon steel; salt spray tested