Spike grid timber connectors are engineered to enhance joint strength and rigidity while at the same time simplifying assembly procedures. Timber structures in which spike grid connectors are utilized include decks, pole frame buildings, pilings, wharves, and bridges or trestles. They are also used to advantage in the construction of pole-supported “building platforms” for conventional building of homes, resort buildings, and other structures situated on hillsides as well as over or near water. Flat spike grids are used between sawn timbers, while single curved spike grids are used between round piles or poles and sawn members. Spike grids are manufactured from malleable iron in accordance with ASTM A47 grade 32510.


Sizes: Flat
Origin: Domestic
Finish: Hot-dip galvanized

Specification: ASTM A47 Grade 32510

Single curve spike grids and plain finish flat spike grids are available but not a stocked item.


Type Part Number Finish Size Depth Bolt Hole Dia. Bolt Dia. Max Lumber Min. Dimensions
Grid in One Face Grid in Both Face
Flat 18681 Plain 4-1/8" x 4-1/8" 1" 1.06" 1" 1-5/8" x 5-1/2" 2-5/8" x 5-1/2"
18682 Galv
Single Curve 18671 Plain 4-1/8" x 4-1/8" 1.38" 1.06" 1" 1-5/8" x 5-1/2" --
18672 Galv