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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
HH5F0560600 9/16-18 X 6 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 18 6
HH5F0560550 9/16-18 X 5 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 18 5 1/2
HH5F0560500 9/16-18 X 5 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 18 5
HH5F0560450 9/16-18 X 4 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 18 4 1/2
HH5F0560400 9/16-18 X 4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 18 4
HH5F0560375 9/16-18 X 3 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 18 3 3/4
HH5F0560350 9/16-18 X 3 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 18 3 1/2
HH5F0560325 9/16-18 X 3 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 18 3 1/4
HH5F0560300 9/16-18 X 3 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 18 3
HH5F0560275 9/16-18 X 2 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 18 2 3/4
HH5F0560250 9/16-18 X 2 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 18 2 1/2
HH5F0560225 9/16-18 X 2 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 18 2 1/4
HH5F0560200 9/16-18 X 2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 18 2
HH5F0560175 9/16-18 X 1 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 18 1 3/4
HH5F0560150 9/16-18 X 1 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 18 1 1/2
HH5F0560125 9/16-18 X 1 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 18 1 1/4
HH5F0560100 9/16-18 X 1 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 18 1
HH50560600 9/16-12 X 6 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 12 5 1/2
HH50560550 9/16-12 X 5 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 12 5
HH50560500 9/16-12 X 5 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 12 4 1/2
HH50560450 9/16-12 X 4 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 12 4
HH50560400 9/16-12 X 4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 12 3 3/4
HH50560375 9/16-12 X 3 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 12 3 1/2
HH50560350 9/16-12 X 3 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 12 3 1/4
HH50560325 9/16-12 X 3 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 12 3
HH50560300 9/16-12 X 3 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 12 2 3/4
HH50560275 9/16-12 X 2 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 12 2 1/2
HH50560250 9/16-12 X 2 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 12 2 1/4
HH50560225 9/16-12 X 2 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 12 2
HH50560200 9/16-12 X 2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 12 1 3/4
HH50560175 9/16-12 X 1 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 12 1 1/2
HH50560150 9/16-12 X 1 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 12 1 1/4
HH50560125 9/16-12 X 1 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 12 1
HH50560100 9/16-12 X 1 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 9/16 12 14
HH50871400 7/8-9 X 14 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 7/8 9 13
HH50870650 7/8-9 X 6 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 7/8 9 6
HH50430800 7/16-14 X 8 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 7/16 14 8
HH50430750 7/16-14 X 7 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 7/16 14 7 1/2
HH50430700 7/16-14 X 7 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 7/16 14 7
HH50430650 7/16-14 X 6 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 7/16 14 6 1/2
HH50430600 7/16-14 X 6 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 7/16 14 6
HH50430550 7/16-14 X 5 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 7/16 14 5 1/2
HH50430500 7/16-14 X 5 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 7/16 14 5
HH50430450 7/16-14 X 4 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 7/16 14 4 1/2
HH50430400 7/16-14 X 4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 7/16 14 4
HH50430375 7/16-14 X 3 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 7/16 14 3 3/4
HH50430350 7/16-14 X 3 1/2 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 7/16 14 3 1/2
HH50430325 7/16-14 X 3 1/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 7/16 14 3 1/4
HH50430300 7/16-14 X 3 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 7/16 14 3
HH50430275 7/16-14 X 2 3/4 GRADE 5 HEX HEAD CAP SCREW ZINC PLATED 7/16 14 2 3/4