1 3/8-6 Finished Hex Nut SS 18-8 (A2)

Tensile Strength: Minimum of 74

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1/2-13 x 12 Simpson Wedge Anchor 303 SS (25)

5/8-18 x 4 1/2 Hex Cap Screw SS 18-8 (A2) 3/8-16 Socket Cap Screws Alloy 1 3/8-6 Finished Hex Nut5 8 18 x 4 1 2 Hex Cap Screw SS 18 8 (A2) . 18 8 stainless steel hex cap screws will have a typical composition of 18% chromium and 8% nickel. These percentages exist in 303, 304 and 305 series stainless steels so 18 8 is used at times to designate any and all of those alloy groups. 18 8 stainless steel offers good corrosion resistance and machines easily but will over time stain in coastal environments. They are also acceptable for use in ACQ