3/16" x 3 1/4" Phillips flat head concrete screw
Category: Hardware & Fasteners
SKU: MF09277
$1.09
In Stock · Midwest Builder & Supply — Iowa & Missouri
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3/16" x 3-1/4" Phillips flat-head concrete screw — a blue/climaseal-coated steel masonry screw with a countersinking (flat) head and Phillips drive, made for fastening into solid concrete, brick or hollow block. Designed to cut threads into masonry when installed over a 5/32" pilot hole, these screws are intended for medium-duty attachment of wood, metal or fixtures to masonry (common applications include securing ledger/header material, jambs, bracing and hardware). Sold in retail and bulk pack sizes (examples: 8‑count kits, 75‑ and 100‑piece boxes) through major fastener brands/distributors; product listings note corrosion-resistant coating and manufacturer-specified installation requirements. (Descriptive facts sourced from retailer and distributor product pages listed below.)