Product Info Catalog Hardware Fasteners Nails Pole Barn Nails, Ring Shank, Hardened Steel, 20D, 4-In., 50-Lbs. Pole Barn Nails, Ring Shank, Hardened Steel, 20D, 4-In., 50-Lbs. Request a Quote UPC: 98342001632 SKU: 288483 Model Number: H526A 50 lb, 20d, ring shank polebarn nail, made from higher carbon steel wire, used for post frame buildings, boxed. Oil-quench hardened post frame nails comply with ASTM standard specification F1667 for fasteners Sharp ring shanks provide excellent holding in posts, trusses and timbers