3/8-16 x 2 Carriage Bolt SS 18-8 (A2) . 18-8 stainless steel carriage bolts are manufactured to meet or exceed ANSI B18.5 and 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 pressure-treated lumber.
- Drill size 3/8
- Head diameter 0.844 - 0.782
- Head height 0.208 - 0.188
- Head type Round
- Length under head 2
- Material 18-8 Stainless Steel
- Meets exceeds ASME B18.5
- Neck type Square
- Square height 0.219 - 0.188
- Square width 0.388 - 0.368
- Tensile strength 100,000 - 150,000 psi
- Thread size 3/8-16
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