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Hex head cap screws have a hexagonal head and are uniformally threaded for use with a corresponding threaded nut or into a threaded tapped hole. Mainly used in repair or construction projects.

5/16-18 x 3-1/2&quot; Hex Head Cap Screw - Steel - Plain - UNC - Grade 8 - USA - 50 Pack - BBI 452096

5-16-18-x-3-1-2-hex-head-cap-screw-steel-plain-unc-grade-8-usa-50-pack-452096

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