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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
HH50250062 1/4-20 X 5/8 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 5/8
HH50250075 1/4-20 X 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 3/4
HH50250087 1/4-20 X 7/8 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 7/8
HH50250100 1/4-20 X 1 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 1
HH50250125 1/4-20 X 1 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 1 1/4
HH50250150 1/4-20 X 1 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 1 1/2
HH50250175 1/4-20 X 1 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 1 3/4
HH50250200 1/4-20 X 2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 2
HH50250225 1/4-20 X 2 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 2 1/4
HH50250250 1/4-20 X 2 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 2 1/2
HH50250275 1/4-20 X 2 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 2 3/4
HH50250300 1/4-20 X 3 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 3
HH50250325 1/4-20 X 3 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 3 1/4
HH50250350 1/4-20 X 3 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 3 1/2
HH50250375 1/4-20 X 3 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 3 3/4
HH50250400 1/4-20 X 4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 4
HH50250425 1/4-20 X 4 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 4 1/4
HH50250450 1/4-20 X 4 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 4 1/2
HH50250475 1/4-20 X 4 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 4 3/4
HH50250500 1/4-20 X 5 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 5
HH50250525 1/4-20 X 5 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 5 1/4
HH50250550 1/4-20 X 5 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 5 1/2
HH50250575 1/4-20 X 5 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 5 3/4
HH50250600 1/4-20 X 6 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 6
HH50250700 1/4-20 X 7 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 7
HH50250800 1/4-20 X 8 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/4 20 8
HH50500075 1/2-13 X 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 3/4
HH50500100 1/2-13 X 1 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 1
HH50500125 1/2-13 X 1 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 1 1/4
HH50500150 1/2-13 X 1 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 1 1/2
HH50500175 1/2-13 X 1 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 1 3/4
HH50500200 1/2-13 X 2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 2
HH50500225 1/2-13 X 2 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 2 1/4
HH50500250 1/2-13 X 2 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 2 1/2
HH50500275 1/2-13 X 2 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 2 3/4
HH50500300 1/2-13 X 3 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 3
HH50500325 1/2-13 X 3 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 3 1/4
HH50500350 1/2-13 X 3 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 3 1/2
HH50500375 1/2-13 X 3 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 3 3/4
HH50500400 1/2-13 X 4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 4
HH50500425 1/2-13 X 4 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 4 1/4
HH50500450 1/2-13 X 4 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 4 1/2
HH50500475 1/2-13 X 4 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 4 3/4
HH50500500 1/2-13 X 5 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 5
HH50500525 1/2-13 X 5 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 5 1/4
HH50500550 1/2-13 X 5 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 5 1/2
HH50500575 1/2-13 X 5 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 5 3/4
HH50500600 1/2-13 X 6 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 6
HH50500650 1/2-13 X 6 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 6 1/2
HH50500700 1/2-13 X 7 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 1/2 13 7