$58.99 Torx Flat Head Self Tapping Floorboard Screws Type F 1/4-20 x 1 QTY 250 - Walmart.com 
No6 x 1/4 - Self Tapping Screw Pozidrive Flange Type B - BZP - Pack of 50 | Self Tapping Screws
Uxcell #8 x 1-1/4 Carbon Steel Phillips Pan Head Self Tapping Screws Zinc Plated 60 Pack 
