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Grade 5 Bolts


High-Quality Grade 5 Bolts & Fasteners | U-Bolt-It

What is a Grade 5 Bolt?

Grade 5 bolts and fasteners are highly reliable structural components manufactured from medium-strength carbon steel. They are strictly specified under the standards set by the Society of Automotive Engineers (SAE). In the field, Grade 5 bolts can easily be identified by the three distinct radial marks stamped on the head of the bolt.

Technical Specifications and Equivalents

To ensure consistent strength and durability, our Grade 5 bolts are heat-treated in a controlled atmosphere. They are available in sizes ranging from ¼ inch through 1-½ inches in diameter. Key specifications include:

  • Minimum Tensile Strength (up to 1" diameter): 120,000 psi
  • Minimum Tensile Strength (over 1" to 1-½" diameter): 105,000 psi
  • Metric Equivalent: Grade 5 bolts are equivalent to Metric 8.8 bolts. When sourcing hardware, always be sure to match the grades on the bolts being used to maintain structural integrity.

Grade 5 vs. Grade 8 Bolts

While Grade 5 bolts offer exceptional strength for general commercial and industrial use, if your application calls for fastening heavier materials, you may need to upgrade to Grade 8 bolts. Grade 8 bolts are the hardest and strongest option available, making them the standard for extreme, heavy manufacturing applications. However, for standard load-bearing requirements, Grade 5 bolts are the perfect, cost-effective solution.

Available Custom Finishes

To provide additional protection against rust and environmental wear, each Grade 5 bolt from U-Bolt-It is available in a high-quality zinc-plated finish.

Request a Quote Today

Have a question about our manufactured Grade 5 bolts? Contact our team directly by phone or by using our secure online form. You can also give us a call today to speak directly with our fastener specialists. We look forward to speaking with you!

Types of Grade 5 Bolts


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SKU NAME DIAMETER THREAD LENGTH DETAILS
HH50500750 1/2-13 X 7 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 7 1/2
HH50500800 1/2-13 X 8 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 8
HH50500850 1/2-13 X 8 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 8 1/2
HH50500900 1/2-13 X 9 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 9
HH50500950 1/2-13 X 9 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 9 1/2
HH50501000 1/2-13 X 10 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 10
HH50501100 1/2-13 X 11 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 11
HH50501200 1/2-13 X 12 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 12
HH51000150 1-8 X 1 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 15
HH51000175 1-8 X 1 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 1 1/2
HH51000200 1-8 X 2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 1 3/4
HH51000225 1-8 X 2 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 2
HH51000250 1-8 X 2 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 2 1/4
HH51000275 1-8 X 2 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 2 1/2
HH51000300 1-8 X 3 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 2 3/4
HH51000325 1-8 X 3 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 3
HH51000350 1-8 X 3 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 3 1/4
HH51000375 1-8 X 3 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 3 1/2
HH51000400 1-8 X 4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 3 3/4
HH51000425 1-8 X 4 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 4
HH51000450 1-8 X 4 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 4 1/4
HH51000500 1-8 X 5 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 4 1/2
HH51000550 1-8 X 5 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 5
HH51000600 1-8 X 6 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 5 1/2
HH51000650 1-8 X 6 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 6
HH51000700 1-8 X 7 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 6 1/2
HH51000750 1-8 X 7 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 7
HH51000800 1-8 X 8 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 7 1/2
HH51000850 1-8 X 8 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 8
HH51000900 1-8 X 9 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 8 1/2
HH51000950 1-8 X 9 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 9
HH51001000 1-8 X 10 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 9 1/2
HH51001100 1-8 X 11 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 10
HH51001200 1-8 X 12 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 11
HH51001300 1-8 X 13 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 12
HH51001400 1-8 X 14 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 8 13
HH51120400 1 1/8-7 X 4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 1/8 7 14
HH51120450 1 1/8-7 X 4 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 1/8 7 4
HH51120550 1 1/8-7 X 5 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 1/8 7 4 1/2
HH51120600 1 1/8-7 X 6 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 1/8 7 5 1/2
HH51250300 1 1/4-7 X 3 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 1/4 7 6
HH51250400 1 1/4-7 X 4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 1/4 7 3
HH51250500 1 1/4-7 X 5 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 1/4 7 4
HH51250550 1 1/4-7 x 5 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1 1/4 7 5
HH5F0250050 1/4-28 X 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 28 1/2
HH5F0250062 1/4-28 X 5/8 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 28 5/8
HH5F0250075 1/4-28 X 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 28 3/4
HH5F0250087 1/4-28 X 7/8 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 28 7/8
HH5F0250100 1/4-28 X 1 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 28 1
HH5F0250125 1/4-28 X 1 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 28 1 1/4