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Sold in sets of 1 Hex heads with three markings are grade 5 fasteners. This grade is made from medium quality carbon steel. These are commonly used in automotive applications. Grade 5 cap screws are hardened. During manufacturing, they are heated in order to strengthen the outside of the screw.
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We currently ship within the US, with more countries coming soon.
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🇺🇸 Ship from USA · On Agora since 2026
$368.61