Industrial 1/2-13x1-1/2 Hex Tap Bolts A307 Grade A

Industrial 1/2-13x1-1/2 Hex Tap Bolts A307 Grade A are fully threaded hex-head fasteners designed for general-purpose assemblies, sized 1/2 in diameter with a 13 threads-per-inch (UNC) coarse thread and a 1-1/2 in shank length. They feature a hex head and full-length threading, making them suitable for nut-and-bolt or tapped-hole connections in light- to medium-duty applications. The bolts are manufactured from ASTM A307 Grade A carbon steel, and finishes vary by supplier, with common options including zinc-plated (Cr+3) variants and hot-dipped galvanized (HDG) versions. For fit and tooling, the standard across-flats width of a 1/2 in hex head is about 0.75 in, which aligns with typical wrenches and sockets used for these fasteners. You’ll find these exact-spec bolts offered by multiple suppliers, including Prime-Line’s 1/2-13 x 1-1/2" A307 Grade A zinc-plated hex tap bolts (25-pack) and HDG variants from other distributors.