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High-Quality Grade 8 Bolts and Fasteners


High-Quality Grade 8 Bolts & Fasteners | U-Bolt-It

What is a Grade 8 Bolt?

Grade 8 bolts and fasteners are generally the most durable and reliable hardware available for extreme, heavy-duty structural applications. They are comprised of high-strength carbon-alloy steel and are heat-treated in a carbon-controlled atmosphere to achieve superior hardness. Designed for securing heavy loads and thick structural materials, Grade 8 bolts boast the highest ratings in their class, featuring an impressive minimum tensile strength of 150,000 psi.

Common Industry Applications

Because of their unmatched strength and durability, Grade 8 bolts are exclusively used in harsh environments where extreme stress, high vibration, and strong load-bearing pressure are required. Common industries and applications include:

  • Marine and shipbuilding industries
  • Military and defense equipment
  • Aerospace and aviation manufacturing
  • Off-road vehicle markets and heavy machinery
  • Related high-stress mechanical and structural applications

Request a Quote Today

Have a question about our manufactured Grade 8 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 8 Bolts


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SKU NAME DIAMETER THREAD LENGTH DETAILS
HH80500600 1/2-13 X 6 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1/2 13 6
HH80500650 1/2-13 X 6 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1/2 13 6 1/2
HH80500700 1/2-13 X 7 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1/2 13 7
HH80500750 1/2-13 X 7 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1/2 13 7 1/2
HH80500800 1/2-13 X 8 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1/2 13 8
HH80500850 1/2-13 X 8 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1/2 13 8 1/2
HH80500900 1/2-13 X 9 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1/2 13 9
HH80500950 1/2-13 X 9 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1/2 13 9 1/2
HH80501000 1/2-13 X 10 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1/2 13 10
HH80501100 1/2-13 X 11 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1/2 13 11
HH80501200 1/2-13 X 12 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1/2 13 12
HH81000150 1-8 X 1 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 1 1/2
HH81000175 1-8 X 1 3/4 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 1 3/4
HH81000200 1-8 X 2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 2
HH81000225 1-8 X 2 1/4 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 2 1/4
HH81000250 1-8 X 2 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 2 1/2
HH81000275 1-8 X 2 3/4 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 2 3/4
HH81000300 1-8 X 3 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 3
HH81000325 1-8 X 3 1/4 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 3 1/4
HH81000350 1-8 X 3 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 3 1/2
HH81000375 1-8 X 3 3/4 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 3 3/4
HH81000400 1-8 X 4 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 4
HH81000450 1-8 X 4 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 4 1/2
HH81000500 1-8 X 5 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 5
HH81000550 1-8 X 5 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 5 1/2
HH81000600 1-8 X 6 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 6
HH81000650 1-8 X 6 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 6 1/2
HH81000700 1-8 X 7 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 7
HH81000750 1-8 X 7 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 7 1/2
HH81000800 1-8 X 8 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 8
HH81000850 1-8 X 8 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 8 1/2
HH81000900 1-8 X 9 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 9
HH81000950 1-8 X 9 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 9 1/2
HH81001000 1-8 X 10 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 10
HH81001400 1-8 X 14 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 8 14
HH81120200 1 1/8-7 X 2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 1/8 7 2
HH81120250 1 1/8-7 X 2 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 1/8 7 2.5
HH81120300 1 1/8-7 X 3 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 1/8 7 3
HH81120350 1 1/8-7 X 3 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 1/8 7 3.5
HH81120400 1 1/8-7X 4 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 1/8 7 4
HH81120450 1 1/8-7 X 4 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 1/8 7 4.5
HH81120500 1 1/8-7 X 5 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 1/8 7 5
HH81120550 1 1/8-7 X 5 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 1/8 7 5.5
HH81120600 1 1/8-7 X 6 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 1/8 7 6
HH81120650 1 1/8-7 X 6 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 1/8 7 6.5
HH81120700 1 1/8-7 X 7 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 1/8 7 7
HH81120750 1 1/8-7 X 7 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 1/8 7 7.5
HH81120800 1 1/8-7 X 8 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 1/8 7 8
HH81120850 1 1/8-7 X 8 1/2 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 1/8 7 8.5
HH81120900 1 1/8-7 X 9 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 1 1/8 7 9