I ended up using M8 JIS 10.9 grade zinc plated nuts with no serration but they are good quality for Chinese made fasteners.
π© Eowpower 50 Pieces of 1/4"-20 x 7/16" Zinc Plated Tee T-Nuts with 4 Prongs
10 Review
Nokian Tires Hakkapeliitta 9 175/65 R14 86T winter
36 Review
Computer chair Bureaucrat KB-8 for executive, upholstery: textile, color: black
18 Review
Amino acid Prime Kraft 2:1:1, green apple, 150 gr.
27 Review
Gorilla Waterproof Patch & Seal Liquid - Black 16Oz - Ultimate Solution For Quick Fixes (Pack Of 1)
39 Review
32Oz Gorilla White Waterproof Patch & Seal Liquid For Effective Sealing (Single Pack)
30 Review
Hemway Glitter Grout Tile Additive: Sand Gold Sparkle For Your Bathroom, Kitchen And Wet Room Tiles - Easy To Use And Temperature Resistant!
10 Review
Silver Holographic Stars Glitter Grout Tile Additive 100G - Easy To Use For Tiles, Bathroom, Wet Room & Kitchen
14 Review