20 x Red Pan Head Screws Polypropylene (PP) Plastic Nuts and Bolts, M4 x 40mm, Washers, 5/32 x 1-37/64 sold2024 Acorn nut are hex nuts

Acorn nut are hex nuts with a domed top to cover the end of the bolt tip so to protect the thread and provides a finished appearance

Upgraded Protection With Premium Material With 3 layers of high-quality material

They will save you hundreds from otherwise buying and installing fluorescent lights or something similar

The self-sharpening

20 x Red Pan Head Screws Polypropylene (PP) Plastic Nuts and Bolts, M4 x 40mm, Washers, 5/32 x 1-37/64 sold2024 Acorn nut are hex nuts20 x Red Pan Head Screws Polypropylene (PP) Plastic Nuts and Bolts, M4 x 40mm, Washers, 5 32 x 1 37 64 Water Resistant, Anti Corrosion, Chemical Resistant, Electrical Insulator, Strong. APPLICATIONS: Polypropylene is an economical material that offers a combination of outstanding physical, chemical, mechanical, thermal and electrical properties not found in any other thermoplastic. Product Features M4 x 40mm, Pan Head Screw, Pantone 19 1664 TPX