I thought 4" meant 4" shaft so a 4 x 4 rack (with a 3-1/2" square) would do, but it's not .It is a total of 4" including ring. Don't worry, I countersunk the end of the washer and nut. Luckily I had my power tools with me.
Xiaomi MiJia Electric Screwdriver Gun Cordless Screwdriver Black
20 Review
π Squeeeek No More Hardwood Replacement: Bid Farewell to Annoying Floor Squeaks
10 Review
Multifunctional Assorted Screw Eyes Kit β Perfect For Hanging, Jewelry Making And Crafts β 105 Pcs
16 Review
191Pcs Nickel Plated Metal Eye Shape Screws - 9 Sizes, Self Tapping, Silver Color | ECKJ
15 Review