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L-9 Hex Head Bolts


High-Strength L-9 Hex Head Bolts & Fastening System | U-Bolt-It

What is an L-9 Hex Head Bolt?

The L-9 hex head bolt is a premium, ultra-high-strength industrial fastener that serves as the core component of the comprehensive L-9 Fastening System. Engineered specifically to withstand high-stress conditions and severe service environments, these heavy-duty bolts are manufactured using specialized AISI steel materials to provide unmatched durability where standard hardware would fail.

The Complete L-9 Fastening System

To maximize its load-bearing capabilities, the L-9 hex head bolt is designed to work in tandem with specialized, high-grade hardware. To achieve maximum holding power, a complete L-9 system consists of:

  • The L-9 Hex Head Bolt
  • Two L-9 Washers
  • An L-9 Hex Nut
  • An L-9 Hex Locknut (depending on the application)

Technical Advantages: 20% Stronger Than Grade 8

When it comes to rugged structural integrity, the L-9 system sets the industry standard. The L-9 fastening system is an impressive 20% stronger than a standard SAE Grade 8 bolt. Furthermore, its specialized design features tightly control torque tension characteristics. This allows the system to develop exceptionally high clamp loads when utilizing properly controlled tightening methods.

Request a Quote Today

Have a question about our manufactured hex head bolts or the complete L-9 Fastening System? Contact our team directly by phone or by using our secure online form to submit your project details. You can also give us a call today to speak directly with our fastener specialists. We look forward to speaking with you!

High-Quality L-9 Hex Head Bolts


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SKU NAME DIAMETER THREAD LENGTH DETAILS
HH90560500 9/16-12 X 5 L9 HEX HEAD CAP SCREW YELLOW ZINC 9/16 12 5
HH90560400 9/16-12 X 4 L9 HEX HEAD CAP SCREW YELLOW ZINC 9/16 12 4
HH90560350 9/16-12 X 3 1/2 L9 HEX HEAD CAP SCREW YELLOW ZINC 9/16 12 3 1/2
HH90560300 9/16-12 X 3 L9 HEX HEAD CAP SCREW YELLOW ZINC 9/16 12 3
HH90560250 9/16-12 X 2 1/2 L9 HEX HEAD CAP SCREW YELLOW ZINC 9/16 12 2 1/2
HH90560200 9/16-12 X 2 L9 HEX HEAD CAP SCREW YELLOW ZINC 9/16 12 2
HH90560150 9/16-12 X 1 1/2 L9 HEX HEAD CAP SCREW YELLOW ZINC 9/16 12 1 1/2
HH90560100 9/16-12 X 1 L9 HEX HEAD CAP SCREW YELLOW ZINC 9/16 12 1
HH90871200 7/8-9 X 12 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/8 9 12
HH90870200 7/8-9 X 2 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/8 9 2
HH90870250 7/8-9 X 2 1/2 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/8 9 2 1/2
HH90870300 7/8-9 X 3 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/8 9 3
HH90870350 7/8-9 X 3 1/2 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/8 9 3 1/2
HH90870400 7/8-9 X 4 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/8 9 4
HH90870450 7/8-9 X 4 1/2 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/8 9 4 1/2
HH90870550 7/8-9 X 5 1/2 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/8 9 5 1/2
HH90870700 7/8-9 X 7 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/8 9 7
HH90870800 7/8-9 X 8 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/8 9 8
HH90870900 7/8-9 X 9 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/8 9 9
HH90871000 7/8-9 X 10 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/8 9 10
HH90871100 7/8-9 X 11 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/8 9 11
HH90430600 7/16-14 X 6 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/16 14 6
HH90430500 7/16-14 X 5 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/16 14 5
HH90430400 7/16-14 X 4 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/16 14 4
HH90430300 7/16-14 X 3 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/16 14 3
HH90430250 7/16-14 X 2 1/2 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/16 14 2 1/2
HH90430200 7/16-14 X 2 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/16 14 2
HH90430175 7/16-14 X 1 3/4 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/16 14 1 3/4
HH90430150 7/16-14 X 1 1/2 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/16 14 1 1/2
HH90430125 7/16-14 X 1 1/4 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/16 14 1 1/4
HH90430100 7/16-14 X 1 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/16 14 1
HH90430075 7/16-14 X 3/4 L9 HEX HEAD CAP SCREW YELLOW ZINC 7/16 14 3/4
HH90620300 5/8-11 X 3 L9 HEX HEAD CAP SCREW YELLOW ZINC 5/8 11 3
HH90620175 5/8-11 X 1 3/4 L9 HEX HEAD CAP SCREW YELLOW ZINC 5/8 11 1 3/4
HH90620150 5/8-11 X 1 1/2 L9 HEX HEAD CAP SCREW YELLOW ZINC 5/8 11 1 1/2
HH90620125 5/8-11 X 1 1/4 L9 HEX HEAD CAP SCREW YELLOW ZINC 5/8 11 1 1/4
HH90620100 5/8-11 X 1 L9 HEX HEAD CAP SCREW YELLOW ZINC 5/8 11 1
HH90620200 5/8-11 X 2 L9 HEX HEAD CAP SCREW YELLOW ZINC 5/8 11 2
HH90620225 5/8-11X 2 1/4 L9 HEX HEAD CAP SCREW YELLOW ZINC 5/8 11 2 1/4
HH90620250 5/8-11X 2 1/2 L9 HEX HEAD CAP SCREW YELLOW ZINC 5/8 11 2 1/2
HH90620275 5/8-11 X 2 3/4 L9 HEX HEAD CAP SCREW YELLOW ZINC 5/8 11 2 3/4
HH90310150 5/16-18 X 1 1/2 L9 HEX HEAD CAP SCREW YELLOW ZINC 5/16 18 1 1/2
HH90310400 5/16-18 X 4 L9 HEX HEAD CAP SCREW YELLOW ZINC 5/16 18 4
HH90310350 5/16-18 X 3 1/2 L9 HEX HEAD CAP SCREW YELLOW ZINC 5/16 18 3 1/2
HH90310300 5/16-18 X 3 L9 HEX HEAD CAP SCREW YELLOW ZINC 5/16 18 3
HH90310250 5/16-18 X 2 1/2 L9 HEX HEAD CAP SCREW YELLOW ZINC 5/16 18 2 1/2
HH90310200 5/16-18 X 2 L9 HEX HEAD CAP SCREW YELLOW ZINC 5/16 18 2
HH90310175 5/16-18 X 1 3/4 L9 HEX HEAD CAP SCREW YELLOW ZINC 5/16 18 1 3/4
HH90310062 5/16-18 X 5/8 L9 HEX HEAD CAP SCREW YELLOW ZINC 5/16 18 5/8
HH90310075 5/16-18 X 3/4 L9 HEX HEAD CAP SCREW YELLOW ZINC 5/16 18 3/4