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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
HH50620175 5/8-11 X 1 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 1 1/2
HH50620200 5/8-11 X 2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 1 3/4
HH50620225 5/8-11 X 2 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 2
HH50620250 5/8-11 X 2 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 2 1/4
HH50620275 5/8-11 X 2 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 2 1/2
HH50620300 5/8-11 X 3 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 2 3/4
HH50620325 5/8-11 X 3 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 3
HH50620350 5/8-11 X 3 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 3 1/4
HH50620375 5/8-11 X 3 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 3 1/2
HH50620400 5/8-11 X 4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 3 3/4
HH50620425 5/8-11 X 4 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 4
HH50620450 5/8-11 X 4 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 4 1/4
HH50620475 5/8-11 X 4 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 4 1/2
HH50620500 5/8-11 X 5 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 4 3/4
HH50620550 5/8-11 X 5 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 5
HH50620575 5/8-11 X 5 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 5 1/2
HH50620600 5/8-11 X 6 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 5 3/4
HH50620650 5/8-11 X 6 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 6
HH50620700 5/8-11 X 7 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 6 1/2
HH50620750 5/8-11 X 7 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 7
HH50620800 5/8-11 X 8 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 7 1/2
HH50620850 5/8-11 X 8 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 8
HH50620900 5/8-11 X 9 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 8 1/2
HH50620950 5/8-11 X 9 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 9
HH50621000 5/8-11 X 10 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 9 1/2
HH50621100 5/8-11 X 11 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 10
HH50621200 5/8-11 X 12 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 11
HH50621300 5/8-11 X 13 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 12
HH50621400 5/8-11 X 14 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 13
HH50621500 5/8-11 X 15 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/8 11 14
HH5F0310050 5/16-24 X 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 1/2
HH5F0310062 5/16-24 X 5/8 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 5/8
HH5F0310075 5/16-24 X 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 3/4
HH5F0310087 5/16-24 X 7/8 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 7/8
HH5F0310100 5/16-24 X 1 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 1
HH5F0310125 5/16-24 X 1 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 1 1/4
HH5F0310150 5/16-24 X 1 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 1 1/2
HH5F0310175 5/16-24 X 1 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 1 3/4
HH5F0310200 5/16-24 X 2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 2
HH5F0310225 5/16-24 X 2 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 2 1/4
HH5F0310250 5/16-24 X 2 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 2 1/2
HH5F0310275 5/16-24 X 2 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 2 3/4
HH5F0310300 5/16-24 X 3 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 3
HH5F0310325 5/16-24 X 3 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 3 1/4
HH5F0310350 5/16-24 X 3 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 3 1/2
HH5F0310375 5/16-24 X 3 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 3 3/4
HH5F0310400 5/16-24 X 4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 4
HH5F0310425 5/16-24 X 4 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 4 1/4
HH5F0310450 5/16-18 X 4 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 4 1/2
HH5F0310475 5/16-24 X 4 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 5/16 24 4 3/4