TSP, a WN Global Company API, supply chain, engineered fasteners, supply chain, supply chain management, manufacturing, OEM, quality, 20E, 20F, A2LA, shear screw, ABS, QMS, WN Global TSP is a Supply Chain Management provider, specializing in engineered fasteners for Oil and Gas Service Manufacturing and other OEMs. We've been in the fastener distribution business nearly 75 years and have the knowledge and experience to meet the unique needs of our customers. By combining our vast inventory of specialized, quality products with efficient, cost saving Supply Chain Management programs, TSP is able to provide the right fastener, at the right price, at the right time.