Designed primarily for use with square bolts

10 x 3 1/2 Simpson Bugle-Head Wood Decking Screws - Square Drive T17 316 SS - 1 lbs Pack (54)

When used with castle or slotted nuts

#24 Heavy Duty Drill Bit - Stubby Length

1 x 18 Ship Auger Wood Bit

1/2-13 x 5 Hex Tap Bolt Silicon Bronze 5/8-11 Grade 5 Hex Cap Screws Zinc Plated Designed primarily for use with1 2 13 x 5 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.