Flush Mount Maxi-Bolt

It is stating the obvious that no construction project is free from error or unanticipated change. Have you ever been involved on a project and been frustrated by the problem of cast in place anchorages not being in the right place whether through error or design change? Often, the remedy to such a situation is only slightly less desirable than the original condition. Until now. Drillco National Group Introduces:

The Ideal Anchor Bolt for Any Flush-Mount Anchorage

Flush Mount Maxi-Bolt



  • Drillco's Flush-Mount Maxi-Bolt combines the capacity and reliability of cast in place inserts with the installation convenience typical of expansion anchors.
  • Drillco's Patented Undercutting Tool (Pat. No. 4,307,636) forms a conical undercut in concrete which allows the Flush-Mount Maxi-Bolt to consistently develop the full capacity of its ASTM Al 93 B7 bolting material without slippage.
  • The Flush-Mount Maxi-Bolt is available in 1/2", 5/8", 3/4", 1", and 1 1/4 " diameters.

Now designers and field construction personnel have the advantage of being able to place a reliable insert exactly where they want it-when they want it. The Drillco Flush-Mount Maxi-Bolt is a high strength, ductile, undercut anchor connected to an internally threaded coupler that rests flush with concrete or attachment surfaces. This Flush-Mount Maxi-Bolt is ideal for applications where equipment must be slid into place or temporarily removed. Furthermore, it is a very user friendly anchorage for fast track projects; concrete may be poured without worrying about equipment design or placement changes. The Flush-Mount Maxi-Bolt has the same load allowables, spacing and edge distance requirements as the regular Maxi-Bolt. Best of all, primary hole drill bits and Undercutting Tools' are unchanged, thus eliminating the need for retooling. And, like the original Maxi-Bolt, Drillco's Flush-Mount Maxi-Bolt is manufactured under a documented quality assurance program.



  • Equipment hold down.
  • Eliminates trip hazard on removable railings.
  • Secures ladders ... without a safety hazard caused by bolt projection.
  • Equipment can be slid in with zero clearance.
  • Ideal for eye-bolt lifting lugs.
  • Excellent for anchoring switch gear, and panel boxes.
  • Part Numbers for Ordering

  • Installation Procedure

Drillco Flush Mount Maxi-Bolt Information

3/8" 3" 1-1/2" 3/4" 16 (UNC)
1/2" 4" 2" 1" 13 (UNC)
5/8" 4-1/2" 2" 1" 11 (UNC)
3/4" 4-1/2" 2" 1" 10 (UNC)
1" 7" 2-1/2" 1-1/4" 8 (UNC)
1-1/4" 8-1/2" 4" 2" 8 (UN)
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