Silicon Bronze Flat Washers are similar to low carbon steel in hardness but offer high resistance to corrosive environments such as sea water

1 1/2 L9 USS Tension Flatwasher Yellow Zinc Plated Domestic USA (120)

1/4 x 3 3/4 Slotted Hex Hi-Low Thread Concrete Screws Blue Ceramic Coated (500)

7 x 2 Simpson Trim-Head Wood Decking Screws - Square Drive 305 SS - 5 lbs Pack (770)

Sizes range from 1/8" x 2" to 1/2" x 6" with combo round

5/8-18 L9 Hex Collar Locknuts Cadmium Yellow & Wax Coated Domestic USA (25) #8 6-Lobe Flat-Head Simpson Deck-Drive DWP Wood Screws 316 Stainless Steel Silicon Bronze Flat Washers are5 8 18 L9 Hex Collar Locknuts Cadmium Yellow & Wax Coated Domestic USA (25). L9 High Tensile Strength Hex Collared Locknuts are designed for use in high stress, severe service environments. The highest mechanical strength off the shelf fastening system available, its special features control torque tension characteristics to develop high clamp loads when using properly controlled tightening methods. Brighton Best manufactures L9 nuts from AISI alloy