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High-Quality 12 Point Bolts & Flange Screws


High-Torque 12 Point Bolts & Flange Screws | U-Bolt-It

What is a 12 Point Bolt?

A 12 point bolt (and its corresponding nut) features an alternative, star-like head design compared to standard hex socket cap screws. This unique twelve-point design permits significantly greater torque to be applied to the screw during installation. This higher torque capacity effectively eliminates the risk of rounding out or stripping the hex socket, a common point of failure that can occur with standard fasteners under heavy loads.

Common Industry Applications

Because of their increased durability and ease of installation with a 12-point socket wrench, U-Bolt-It highly recommends 12 point flange screws for heavy-duty manufacturing and high-vibration environments. Common applications include:

  • Aircraft and aerospace manufacturing
  • Heavy-duty mining equipment
  • Transportation infrastructure and vehicles
  • Agriculture manufacturing and machinery
  • Diesel engine and transmission assemblies

Available Manufacturing Materials

To ensure optimal performance and structural integrity in these demanding applications, our 12 point bolts are available in a variety of high-strength materials and custom protective finishes to resist corrosion and wear.

Request a Quote Today

Have a question about our manufactured 12 point bolts? 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!

Types of 12 Point Bolts


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SKU NAME DIAMETER THREAD LENGTH DETAILS
S12PT1120300 1 1/8-7 X 3 12 POINT FLANGE SCREW 1 1/8 8 3
S12PT1120350 1 1/8-7 X 3 1/2 12 POINT FLANGE SCREW 1 1/8 8 3 1/2
S12PT1120400 1 1/8-7 X 4 12 POINT FLANGE SCREW 1 1/8 8 4
S12PT1120450 1 1/8-7 X 4 1/2 12 POINT FLANGE SCREW 1 1/8 8 4 1/2
S12PT1120500 1 1/8-7 X 5 12 POINT FLANGE SCREW 1 1/8 8 5
S12PT1120550 1 1/8-7 X 5 1/2 12 POINT FLANGE SCREW 1 1/8 8 5 1/2
S12PT1120600 1 1/8-7 X 6 12 POINT FLANGE SCREW 1 1/8 8 6
S12PT1120650 1 1/8-7 X 6 1/2 12 POINT FLANGE SCREW 1 1/8 8 6 1/2
S12PT1120700 1 1/8-7 X 7 12 POINT FLANGE SCREW 1 1/8 8 7
S12PT1120800 1 1/8-7 X 8 12 POINT FLANGE SCREW 1 1/4 7 8
S12PT1120900 1 1/8-7 X 9 12 POINT FLANGE SCREW 1 1/4 7 9
S12PT1251000 1 1/4-7 X 10 12 POINT FLANGE SCREW 1 1/4 7 10
S12PT1251100 1 1/4-7 X 11 12 POINT FLANGE SCREW 1 1/4 7 11
S12PT1251200 1 1/4-7 X 12 12 POINT FLANGE SCREW 1 1/4 7 12
S12PT1250250 1 1/4-7 X 2 1/2 12 POINT FLANGE SCREW 1 1/4 7 2 1/2
S12PT1250300 1 1/4-7 X 3 12 POINT FLANGE SCREW 1 1/4 7 3
S12PT1250350 1 1/4-7 X 3 1/2 12 POINT FLANGE SCREW 1 1/4 7 3 1/2
S12PT1250400 1 1/4-7 X 4 12 POINT FLANGE SCREW 1 1/4 7 4
S12PT1250450 1 1/4-7 X 4 1/2 12 POINT FLANGE SCREW 1 1/4 7 4 1/2
S12PT1250500 1 1/4-7 X 5 12 POINT FLANGE SCREW 1 1/4 7 5
S12PT1250550 1 1/4-7 X 5 1/2 12 POINT FLANGE SCREW 1 1/4 7 5 1/2
S12PT1250600 1 1/4-7 X 6 12 POINT FLANGE SCREW 1 1/4 7 6
S12PT1250650 1 1/4-7 X 6 1/2 12 POINT FLANGE SCREW 1 1/2 7 6 1/2
S12PT1250700 1 1/4-7 X 7 12 POINT FLANGE SCREW 1 1/2 7 7
S12PT1250800 1 1/4-7 X 8 12 POINT FLANGE SCREW 1 1/2 7 8
S12PT1250900 1 1/4-7 X 9 12 POINT FLANGE SCREW 1 1/2 7 9
S12PT1501000 1 1/2-6 X 10 12 POINT FLANGE SCREW 1 1/2 7 10
S12PT1501100 1 1/2-6 X 11 12 POINT FLANGE SCREW 1 1/2 7 11
S12PT1501200 1 1/2-6 X 12 12 POINT FLANGE SCREW 1 1/2 7 12
S12PT1500250 1 1/2-6 X 2 1/2 12 POINT FLANGE SCREW 1 1/2 7 2 1/2
S12PT1500300 1 1/2-6 X 3 12 POINT FLANGE SCREW 1 1/2 7 3
S12PT1500350 1 1/2-6 X 3 1/2 12 POINT FLANGE SCREW 1 1/2 7 3 1/2
S12PT1500400 1 1/2-6 X 4 12 POINT FLANGE SCREW 1 1/2 7 4
S12PT1500450 1 1/2-6 X 4 1/2 12 POINT FLANGE SCREW 1 1/2 7 4 1/2
S12PT1500500 1 1/2-6 X 5 12 POINT FLANGE SCREW 1 1/2 7 5
S12PT1500550 1 1/2-6 X 5 1/2 12 POINT FLANGE SCREW 1 1/2 7 5.5
S12PT1500600 1 1/2-6 X 6 12 POINT FLANGE SCREW 1 1/2 7 6
S12PT1500650 1 1/2-6 X 6 1/2 12 POINT FLANGE SCREW 1 1/2 7 6.5
S12PT1500700 1 1/2-6 X 7 12 POINT FLANGE SCREW 1 1/2 7 7
S12PT1500800 1 1/2-6 X 8 12 POINT FLANGE SCREW 1 1/2 7 8
S12PT1500900 1 1/2-6 X 9 12 POINT FLANGE SCREW 1 1/2 7 9