Alcoa Fastening Systems & Rings Aerospace Alcoaalcoa.com

For use with all ring retained grommets except 40G1 series.
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Item #

Material

Finish

Heat Treat

R4G N/A Spring Steel Wire N/A Cadmium Plate per QQ-P-416, Type II, Class 2 N/A 200 KSI Minimum Tensile
R4G-1 N/A Spring Steel Wire N/A Zinc Plate per ASTM B633, Type II , Class 13 (Blue) N/A 200 KSI Minimum Tensile
R4G-2 N/A Spring Steel Wire N/A Zinc Plate per ASTM B633, Type II, Class 8 (Yellow Chromate) N/A 200 KSI Minimum Tensile
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1