Hexagonal washer head drilling and tail screws Hexagonal washer head S-shaped spiral tail hexagonal self-tapping screws Hexagonal head self-tapping screws corrugated plate screws self-drilling screws Made in Taiwan (E02D-Z02)

• Drill tail screws, hexagonal head S-shaped No. 5 tail fine thread self-tapping screws
• Generally used to lock H-shaped steel plates and channel plates, and can directly drill iron plates within 12mm.
• Self-tapping screws are self-drilling screws that can be drilled into building materials by themselves and do not require pre-drilling holes.

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Origin:
Taiwan