Hex bolts, also commonly referred to as hex cap screws, feature a six-sided head designed for wrench tightening. Hex cap screws are manufactured with tighter dimensional tolerances than standard hex bolts, making them suitable for a broader range of applications, including machinery, structural connections, and repair work. Many hex bolts are engineered with features that resist loosening under vibration, ensuring reliable performance in demanding environments.
Applicable Standards
Inch Series: ASME B18.2.1: Hex cap screws and hex bolts
Metric Series:
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DIN 933: Hex head cap screws (full thread)
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DIN 931: Hex head cap screws (partial thread)
Materials
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Carbon Steel
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Stainless Steel (304, 316, etc.)
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Brass
Surface Finishes
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Black Oxide
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Zinc Plating (clear, yellow)
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Hot-Dip Galvanizing
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Passivation (stainless steel)
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Plain finish
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Other finishes available upon request
Common Applications
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Building and structural construction
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Machinery and equipment assembly
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Automotive and heavy equipment manufacturing
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Woodworking and furniture assembly
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General industrial repair and maintenance
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Infrastructure projects
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