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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
HH50750250 3/4-10 X 2 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 2 1/4
HH50750275 3/4-10 X 2 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 2 1/2
HH50750300 3/4-10 X 3 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 2 3/4
HH50750325 3/4-10 X 3 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 3
HH50750350 3/4-10 X 3 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 3 1/4
HH50750375 3/4-10 X 3 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 3 1/2
HH50750400 3/4-10 X 4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 3 3/4
HH50750450 3/4-10 X 4 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 4
HH50750475 3/4-10 X 4 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 4 1/2
HH50750500 3/4-10 X 5 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 4 3/4
HH50750550 3/4-10 X 5 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 5
HH50750600 3/4-10 X 6 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 5 1/2
HH50750650 3/4-10 X 6 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 6
HH50750700 3/4-10 X 7 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 6 1/2
HH50750750 3/4-10 X 7 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 7
HH50750800 3/4-10 X 8 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 7 1/2
HH50750850 3/4-10 X 8 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 8
HH50750900 3/4-10 X 9 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 8 1/2
HH50750950 3/4-10 X 9 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 9
HH50751000 3/4-10 X 10 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 9 1/2
HH50751100 3/4-10 X 11 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 10
HH50751200 3/4-10 X 12 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 11
HH50751300 3/4-10 X 13 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 12
HH50751400 3/4-10 X 14 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 13
HH50751500 3/4-10 X 15 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/4 10 14
HH5F0370050 3/8-24 X 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 1/2
HH5F0370062 3/8-24 X 5/8 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 5/8
HH5F0370075 3/8-24 X 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 3/4
HH5F0370087 3/8-24 X 7/8 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 7/8
HH5F0370100 3/8-24 X 1 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 1
HH5F0370125 3/8-24 X 1 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 1 1/4
HH5F0370150 3/8-24 X 1-1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 1 1/2
HH5F0370175 3/8-24 X 1 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 1 3/4
HH5F0370200 3/8-24 X 2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 2
HH5F0370225 3/8-24 X 2 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 2 1/4
HH5F0370250 3/8-24 X 2 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 2 1/2
HH5F0370275 3/8-24 X 2 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 2 3/4
HH5F0370300 3/8-24 X 3 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 3
HH5F0370325 3/8-24 X 3 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 3 1/4
HH5F0370350 3/8-24 X 3 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 3 1/2
HH5F0370375 3/8-24 X 3 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 3 3/4
HH5F0370400 3/8-24 X 4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 4
HH5F0370425 3/8-24 X 4 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 4 1/4
HH5F0370450 3/8-24 X 4 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 4 1/2
HH5F0370475 3/8-24 X 4 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 4 3/4
HH5F0370500 3/8-24 X 5 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 5
HH5F0370525 3/8-24 X 5 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 5 1/4
HH5F0370550 3/8-24 X 5 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 5 1/2
HH5F0370575 3/8-24 X 5 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 5 3/4
HH5F0370600 3/8-24 X 6 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 3/8 24 6