Product Info Catalog Tools Power Drill, Bits & Accessories Flat Head Plug, 5/16-In., 20-Pk. Flat Head Plug, 5/16-In., 20-Pk. Request a Quote UPC: 83771300135 Manufacturer: EazyPower Corp SKU: 132254 Model Number: 30013 20 pack, 5/16", flat head plug.