75 hours at 90 Õ F and in only 2 hours at 110 Õ F
Washable and Reusable
5/32 x 4-1/2 in Carton Qty
including expansion from within or behind the substrate or even adhesive compounds
box of 100 Caution: Always wear eye and ear protection at all times
ELCO UltraCon Concrete Screws: 1/4 x 3-1/4, Flat Head, Blue Stalgard Finish, Box of 100 Extinguisher 75 hours at 90 ÕThe Elco UltraCon (Tapcon concrete blue screws) masonry fastening system offers optimal performance in concrete, brick or hollow block whether anchoring electrical boxes, clips, wood headers, plywood, furring strips, insulation, etc. Cold formed, carbon steel anchors, precision cut carbide drill bits and high quality installation tools all work together to provide excellent pull out and shear values. UltraCon screws feature nail points and high low