Hillman 1/2-13 in. Diameter x 3-1/2 in. Length Steel Hex Head Cap Screw, 25-Pack Zinc Plated Screws Lucida USA’s Gluecore Greystone luxury

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Q: What key number/profile is this

5/16-18 x 2 in (100-Pack)

Hillman 1/2-13 in. Diameter x 3-1/2 in. Length Steel Hex Head Cap Screw, 25-Pack Zinc Plated Screws Lucida USA’s Gluecore Greystone luxuryHillman 1 2 13 x 3 1 2 in. Steel Hex Head Cap Screws (25 Pack) Durable steel hex head cap screws for heavy duty fastening in wood, metal, and machinery. Coarse 1 2 13 threads and a washer face head deliver strong clamping force and reliable torque in demanding applications. Key Features: Heavy Duty Strength: Steel construction with hex cap head for high torque fastening Reliable Grip: Coarse 1 2 13 machine threads for secure holds in tapped holes or