Product Info Catalog Hardware Fasteners Nuts Nylon Insert Lock Nut, Zinc Plated Steel, Coarse Thread, 100-Pk., 0.375-16 Nylon Insert Lock Nut, Zinc Plated Steel, Coarse Thread, 100-Pk., 0.375-16 Request a Quote UPC: 08236072891 SKU: 313544 Model Number: 180153 100 Pack, 3/8x16-Inch, Coarse Thread, Zinc Plated Steel, Nylon Insert Lock Nut.