my kind of manufacture for wooden screws.
bolts with hexagonal head made of hardwood.
The Heli-Tie™ Helical Stitch Tie provides a unique solution to the preservation and repair work of brick and masonry structures that are damaged or are otherwise in need of restoration.
Made of type 304 stainless steel, the ¼” diameter x 40″ long tie is installed into the bed joint of damaged or cracked masonry courses using Simpson Strong-Tie FX-263 Rapid-Hardening Vertical/Overhead Repair Mortar. Learn more at https://bit.ly/1riGwbL.