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1-8 x 8 Grade 5 Hex Cap Screw Zinc Plated
304 and 305 series stainless steels so 18-8 is used at times to designate any and all of those alloy groups
7/8-9 x 3 Grade 8 Hex Cap Screw Yellow Zinc Plated
1/2-13 x 8 Grade 8 Hex Cap Screw Yellow Zinc Plated
1-8 x 4 3/4 Socket Cap Screw Alloy Round Split Drive Anchors Zinc Plated 1-8 x 8 Grade 51 8 x 4 3 4 Socket Cap Screw Alloy . Alloy Socket Head Cap Screws from Brighton Best. Hardness of RC 38 43, meets or exceeds ASTM A574. Manufactured from heat treated alloy steel, 1960 series.
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