A2/ 304 Stainless Steel A2, otherwise known as 304 Stainless Steel is the regular stainless standard. Fixaball – Specialists in Fixings and Fasteners UNC ½” Sizes (20 TPI) 1" Fully Threaded 1.1/4" Fully Threaded 1.3/4" Fully Threaded 2.1/4" Partially Threaded 2.3/4” Partially Threaded UNIFIED THREAD STANDARDS Thread standards agreed upon by standard bodies of Canada, the United Kingdom, and the United States.
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