DeWALT Screw-Bolt+ PFM1411420 Screw Anchor, 1/2 in Dia, 4 in L, Carbon Steel, Zinc [SKU: ORG4593059]

Tough threads for tapping high strength concrete, Can be installed closer to the edge than traditional expansion anchors, Fast installation with powered impact wrench, One-piece, finished head design, Ratchet teeth on underside of hex washer head lock against the fixture, Fully removable and re-installable in same hole, Designed for standard ANSI tolerance drill bits, For fencing/railing, glazing/window attachments, racking/shelving/material handling, repairs and maintenance, retrofits, seismic/wind, support ledgers/sill plate attachments, temporary attachments. [QTY/UOM: 50 / 1BX]