ARTICLE – Precision Machining Industry NAICS 332721 Fast Facts Posted on by Published September 2012 By Miles Free III In Washington, D.C., this industry is known as NAICS 332721: Precision Machining. VIEW ARTICLE Post navigation ← ARTICLE – Galion LLC Looks “Outside the Box” to Find the Next Generation of MachinistsOSHA Severe Violator Enforcement Program Removal Criteria →