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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
S12PT0870350 7/8-9 X 3 1/2 12 POINT FLANGE SCREW 7/8 9 3 1/2
S12PT0870400 7/8-9 X 4 12 POINT FLANGE SCREW 7/8 9 4
S12PT0870450 7/8-9 X 4 1/2 12 POINT FLANGE SCREW 7/8 9 4 1/2
S12PT0870200 7/8-9 X 2 12 POINT FLANGE SCREW 7/8 9 2
S12PT0870225 7/8-9 X 2 1/4 12 POINT FLANGE SCREW 7/8 9 2 1/4
S12PT0870250 7/8-9 X 2 1/2 12 POINT FLANGE SCREW 7/8 9 2 1/2
S12PT0870275 7/8-9 X 2 3/4 12 POINT FLANGE SCREW 7/8 9 2 3/4
S12PT0870300 7/8-9 X 3 12 POINT FLANGE SCREW 7/8 9 3
S12PT0870500 7/8-9 X 5 12 POINT FLANGE SCREW 7/8 9 5
S12PT0870550 7/8-9 X 5 1/2 12 POINT FLANGE SCREW 7/8 9 5 1/2
S12PT0870600 7/8-9 X 6 12 POINT FLANGE SCREW 7/8 9 6
S12PT0870650 7/8-9 X 6 1/2 12 POINT FLANGE SCREW 7/8 9 6 1/2
S12PT0870700 7/8-9 X 7 12 POINT FLANGE SCREW 7/8 9 7
S12PT0430870 7/16-14 X 7/8 12 POINT FLANGE SCREW 7/16 14 7/8
S12PT0430750 7/16-14 X 3/4 12 POINT FLANGE SCREW 7/16 14 3/4
S12PT0430400 7/16-14 X 4 12 POINT FLANGE SCREW 7/16 14 4
S12PT0430350 7/16-14 X 3 1/2 12 POINT FLANGE SCREW 7/16 14 3 1/2
S12PT0430325 7/16-14 X 3 1/4 12 POINT FLANGE SCREW 7/16 14 3 1/4
S12PT0430300 7/16-14 X 3 12 POINT FLANGE SCREW 7/16 14 3
S12PT0430275 7/16-14 X 2 3/4 12 POINT FLANGE SCREW 7/16 14 2 3/4
S12PT0430250 7/16-14 X 2 1/2 12 POINT FLANGE SCREW 7/16 14 2 1/2
S12PT0430225 7/16-14 X 2 1/4 12 POINT FLANGE SCREW 7/16 14 2 1/4
S12PT0430200 7/16-14 X 2 12 POINT FLANGE SCREW 7/16 14 2
S12PT0430175 7/16-14 X 1 3/4 12 POINT FLANGE SCREW 7/16 14 1 3/4
S12PT0430150 7/16-14 X 1 1/2 12 POINT FLANGE SCREW 7/16 14 1 1/2
S12PT0430125 7/16-14 X 1 1/4 12 POINT FLANGE SCREW 7/16 14 1 1/4
S12PT0430100 7/16-14 X 1 12 POINT FLANGE SCREW 7/16 14 1
S12PT0870325 7/8-9 X 3 1/4 12 POINT FLANGE SCREW 7/8 9 3 1/4
S12PT0620350 5/8-11 X 3 1/2 12 POINT FLANGE SCREW 5/8 11 3 1/2
S12PT0620100 5/8-11 X 1 12 POINT FLANGE SCREW 5/8 11 1
S12PT0620125 5/8-11 X 1 1/4 12 POINT FLANGE SCREW 5/8 11 1 1/4
S12PT0620150 5/8-11 X 1 1/2 12 POINT FLANGE SCREW 5/8 11 1 1/2
S12PT0620175 5/8-11 X 1 3/4 12 POINT FLANGE SCREW 5/8 11 1 3/4
S12PT0620200 5/8-11 X 2 12 POINT FLANGE SCREW 5/8 11 2
S12PT0620225 5/8-11 X 2 1/4 12 POINT FLANGE SCREW 5/8 11 2 1/4
S12PT0620250 5/8-11 X 2 1/2 12 POINT FLANGE SCREW 5/8 11 2 1/2
S12PT0620275 5/8-11 X 2 3/4 12 POINT FLANGE SCREW 5/8 11 2 3/4
S12PT0310075 5/16-18 X 3/4 12 POINT FLANGE SCREW 5/16 18 3/4
S12PT0310200 5/16-18 X 2 12 POINT FLANGE SCREW 5/16 18 2
S12PT0310175 5/16-18 X 1 3/4 12 POINT FLANGE SCREW 5/16 18 1 3/4
S12PT0310150 5/16-18 X 1 1/2 12 POINT FLANGE SCREW 5/16 18 1 1/2
S12PT0310125 5/16-18 X 1 1/4 12 POINT FLANGE SCREW 5/16 18 1 1/4
S12PT0310100 5/16-18 X 1 12 POINT FLANGE SCREW 5/16 18 1
S12PT0310087 5/16-18 X 7/8 12 POINT FLANGE SCREW 5/16 18 7/8
S12PT0620650 5/8-11 X 6 1/2 12 POINT FLANGE SCREW 5/8 11 6 1/2
S12PT0620900 5/8-11 X 8 12 POINT FLANGE SCREW 5/8 11 8
S12PT0620800 5/8-11 X 7 1/2 12 POINT FLANGE SCREW 5/8 11 7 1/2
S12PT0620700 5/8-11 X 7 12 POINT FLANGE SCREW 5/8 11 7
S12PT0620325 5/8-11 X 3 1/4 12 POINT FLANGE SCREW 5/8 11 3 1/4
S12PT0310050 5/16-18 X 1/2 12 POINT FLANGE SCREW 5/16 18 1/2