PrimeSource at World of Concrete 2015 You can find our Grip-Rite Concrete Accessories on display at booth N1827 in the North Hall. Experience The PrimeSource Difference PrimeSource is one of the largest purveyors of fasteners in the world and one of the largest distributors of building materials in North America. Built Right.Grip-Rite As the Grip-Rite line continues to grow, we are excited to offer solutions to jobsite challenges & construction needs across the country. Global Reach. Hometown Service. With 42 locations across North America and international service, we offer delivery of what you need, whenever & wherever you need. Strength Of Our People Our dedicated 1,200 employees work out of local D.C.’s, so we get to know our partners and they get to know us!