Profile: N&N Drilling Supply Mfr. is a supplier of drilling supplies. Our product line includes flush joint casing & grout casing, drill rods & accessories, core barrels, auger equipment, drill bits, adapters, soil sampling units, water swivels, rollers and drag bits. We also offer core bits & accessories, well products, safety hammers, and driving equipment. Sub adapters are used to connect two different types or sizes of threads. Our adapters are manufactured from heat treated 4142 alloy. We have a variety of auger equipment and accessories used for soil sampling, ground water monitoring, construction and mining applications. Core barrels are used for geotechnical and mineral exploration applications. Our core barrels are manufactured using the tightest tolerances to ensure safe, efficient operation as well as a high rate of core sample recovery.