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Top rated hex bolts
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Best overall
Hillman Hex Bolt, Grade 2 Steel, Zinc-Plated, 1/4-20 x 1 Inch
Reliable general-purpose hex bolts for light-duty fastening. Widely available and well-rated for basic projects.
- Affordable
- Common size
- Good corrosion resistance
- Limited strength for heavy loads
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Best mid-range
Everbilt Hex Bolt, Grade 5 Steel, Zinc-Plated, 3/8-16 x 2 Inch
Medium-strength hex bolt suitable for automotive and construction. Popular choice for durability.
- Higher strength than Grade 2
- Consistent quality
- Easy to find
- Not for extreme loads
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Best heavy-duty
Crown Bolt Hex Bolt, Grade 8 Steel, Yellow Zinc, 1/2-13 x 3 Inch
High-strength bolt for demanding applications like machinery and structural framing. Trusted by professionals.
- Very high tensile strength
- Durable finish
- Good for critical joints
- More expensive
- Overkill for light jobs
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Best corrosion resistant
Prime-Line Hex Bolt, Stainless Steel 304, 1/4-20 x 1-1/2 Inch
Stainless steel bolt perfect for outdoor or marine use where rust is a concern. Excellent value.
- Rustproof
- Good for outdoor use
- Decent strength
- Softer than Grade 8
- Slightly pricier than zinc
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Best budget pick
The Hillman Group Hex Bolt, Nylon Insert Lock Nut Not Included, 5/16-18 x 1-1/2 Inch
Economical hex bolts for non-critical indoor projects. Good enough for furniture assembly and light repairs.
- Very cheap
- Zinc coated
- Common thread size
- Grade 2 only
- May strip if over-torqued