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Brown-Campbell Company
Brown-Campbell Company
Specialty Steel Manufacturer,
Fabricator & Distributor Since 1952

Accessories - Perf-O Grip®

Bolt Washer Seats

Perf-O Grip® Accessories Bolt Washer Seat

Perf-O Grip® Accessories Bolt Washer Seat Assembly

Perf-O Grip® Accessories Bolt Washer Seat Standard


Perf-O Grip® Accessories Bolt Washer Seat Double


Perf-O Grip® bolt seats provide a secure anchor of the grating to structural supports. The standard bolt seat features oblong holes specifically designed to ensure a vertical anchor (with a 3/8” bolt) even if the hole is off concentrically by as much as 1/4”. Double bolt seats are available to maximize the attachment location flexibility by providing approximately 2” of longitudinal adjustment. Available in mill-galvanized steel and stainless steel. Hardware is not provided.


  • Align planks on I-Beam or other anchoring cross-member.
  • Mark the I-Beam for drilling purposes under the hole nearest the end. Drill a pilot hole.
  • Remove plank and drill a finish hole.
  • Replace plank. Place bolt seat in the hole which is now lined up with the drilled hole.
  • Run the carriage bolt through bolt seat, plank and I-Beam, and tighten with washer and nut until secure.