HSS refers to the pickups. The standard Strat has three Single coil pickups, and would be designated SSS. The H in HSS implies that the bridge pickup is a Humbucker. Thi â¦ s became popular because many players find that a single coil in the bridge position sounds too thin and sharp.
To ensure compliance with NACE MRO175, the following requirements must be met: 1  Approved mild carbon steel or fully annealed 316 stainless steel materials. 2  ASME approved welders and weld procedures. 3  Hardness testing to maximum HRC 22.
Certificate of conformity. 1  A COC (Certificate of Conformity) is a declaration of the conformity with the type approval of EC. The purpose of this document is to ensure the free movement of goods within the European Union, specifically for those goods that are subject to homologation and registration.