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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
HH8F0871300 7/8-14 X 13 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 7/8 14 13
HH8F0871400 7/8-14 X 14 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 7/8 14 14
HH8F0871500 7/8-14 X 15 GRADE 8 HEX HEAD CAP SCREW YELLOW ZINC 7/8 14 15
HH8BLK0430075 7/16-14 X 3/4 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 3/4
HH8BLK0430100 7/16-14 X 1 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 1
HH8BLK0430125 7/16-14 X 1 1/4 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 1 1/4
HH8BLK0430150 7/16-14 X 1 1/2 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 1 1/2
HH8BLK0430175 7/16-14 X 1 3/4 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 1 3/4
HH8BLK0430200 7/16-14 X 2 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 2
HH8BLK0430225 7/16-14 X 2 1/4 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 2 1/4
HH8BLK0430250 7/16-14 X 2 1/2 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 2 1/2
HH8BLK0430275 7/16-14 X 2 3/4 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 2 3/4
HH8BLK0430300 7/16-14 X 3 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 3
HH8BLK0430325 7/16-14 X 3 1/4 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 3 1/4
HH8BLK0430350 7/16-14 X 3 1/2 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 3 1/2
HH8BLK0430375 7/16-14 X 3 3/4 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 3
HH8BLK0430400 7/16-14 X 4 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 4
HH8BLK0430425 7/16-14 X 4 1/4 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 4 1/4
HH8BLK0430450 7/16-14 X 4 1/2 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 4 1/2
HH8BLK0430475 7/16-14 X 4 3/4 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 4 3/4
HH8BLK0430500 7/16-14 X 5 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 5
HH8BLK0430550 7/16-14 X 5 1/2 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 5 1/2
HH8BLK0430600 7/16-14 X 6 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 6
HH8BLK0430650 7/16-14 X 6 1/2 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 6 1/2
HH8BLK0430700 7/16-14 X 7 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 7
HH8BLK0430750 7/16-14 X 7 1/2 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 7 1/2
HH8BLK0430800 7/16-14 X 8 GRADE 8 HEX HEAD CAP SCREW BLACK 7/16 14 8
HH8BLK0431600 7/16-14 X 16\ GRADE 8 HEX HEAD CAP SCREW BLACK" 7/16 14 16
HH8BLK0870150 7/8-9 X 1 1/2 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 1 1/2
HH8BLK0870175 7/8-9 X 1 3/4 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 1 3/4
HH8BLK0870200 7/8-9 X 2 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 2
HH8BLK0870225 7/8-9 X 2 1/4 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 2 1/4
HH8BLK0870250 7/8-9 X 2 1/2 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 2 1/2
HH8BLK0870275 7/8-9 X 2 3/4 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 2 3/4
HH8BLK0870300 7/8-9 X 3 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 3
HH8BLK0870325 7/8-9 X 3 1/4 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 3 1/4
HH8BLK0870350 7/8-9 X 3 1/2 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 3 1/2
HH8BLK0870375 7/8-9 X 3 3/4 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 3 3/4
HH8BLK0870400 7/8-9 X 4 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 4
HH8BLK0870425 7/8-9 X 4 1/4 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 4 1/4
HH8BLK0870450 7/8-9 X 4 1/2 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 4 1/2
HH8BLK0870500 7/8-9 X 5 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 5
HH8BLK0870550 7/8-9 X 5 1/2 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 5 1/2
HH8BLK0870600 7/8-9 X 6 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 6
HH8BLK0870650 7/8-9 X 6 1/2 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 6 1/2
HH8BLK0870700 7/8-9 X 7 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 7
HH8BLK0870750 7/8-9 X 7 1/2 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 7 1/2
HH8BLK0870800 7/8-9 X 8 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 8
HH8BLK0870850 7/8-9 X 8 1/2 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 8 1/2
HH8BLK0870900 7/8-9 X 9 GRADE 8 HEX HEAD CAP SCREW BLACK 7/8 9 9