Fastener Material Key
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A1 Stainless Steel- Also known as grade 303. A general purpose grade of stainless steel but with better fabrication/machining properties than grade 304. |
X
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A2 Stainless Steel - Also known as grade 304 or 18/8. A general purpose grade of stainless steel. |
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A4 Stainless Steel - Also known as grade 316 or 18/8/3. A higher corrosion resistant, marine grade of stainless steel. |
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Plastic (Black Polyethylene) - Has good barrier properties and good chemical resistance against acid, greases, and oil. |
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Plastic (White Polyethylene) - Has good barrier properties and good chemical resistance against acid, greases, and oil. |