3-1/4" Yellow Zinc Metal Self Tapping Drilling Eye Lag Screws for Metal Joists 16 to 22 Gauge Sheet Metal,1-3/4" Thread Length,2" from Collar to Drill Point,Hang Suspended Drop Ceilings Grid,100/PKG - Walmart.com
Teks #14 x 3-in Phillips-Drive Sheet Metal Screws (40-Count) in the Specialty Screws department at Lowes.com
Screw Diameter Chart – Rolleston Mens Shed
S-MD-HWH 1/4", #3 Self-drilling metal screws - Metal Screws - Hilti USA
Campbell Approved Supplier #10-16x1-1/4 Inch Steel Self Tapping Zip Screw
4 SCREWS 6-32 x 1/2" Pan Head Slotted for Standard Gauge Trains | eBay
8 X 1/2" - 1/4" HWH Slot Sheet Metal Screw Sold/Each - White Cap