Underlayment Wood Screw Collated MTHZ1S Strong Drive One Inch Size Seven Yellow Zinc With Trim Head Nibs For Countersinking High Low Threads Square Drive 2500 Pack

This bulk underlayment screw is built for flooring sublayers and subfloors, with a trim head and nibs to help countersink for a flush finish.

✅ 1 inch length
✅ #7 size
✅ Yellow zinc finish
✅ Trim head with nibs for countersinking
✅ High-low thread design for strong bite
✅ Square drive and #2 driver bit in each box
✅ 2500 pack

💡 What is the best way to use trim head countersinking screws with nibs in underlayment projects? This handy screw is designed to sit flush and bite firmly while securing underlayment.
- High-low thread design improves bite in wood
- Nibs guide countersinking for flush, clean surfaces
- Square drive ensures consistent seating with #2 bit