1 1/2 Flat Washer SS 316 (A4)

Pre-drilling recommended near board ends to prevent splitting

7/8-14 x 1 3/4 Hex Cap Screw SS 18-8 (A2)

1/4 x 12 High Speed Aircraft Bit Cobalt

#2 square-drive bugle heads drive flush with work surface

5/8-11 x 3 1/2 Hex Tap Bolt Silicon Bronze 5/8-11 Socket Cap Screws 18-8 Stainless Steel 1 1/2 Flat Washer SS5 8 11 x 3 1 2 Hex Tap Bolt Silicon Bronze. Silicon Bronze Hex Tap Bolts are similar to low carbon steel in hardness but offer high resistance to corrosive environments such as sea water, gases, sewage and atmospheric conditions. Commonly used in naval construction and power plant applications.