The nylon flange head adds stability in hollow surfaces

2-4 1/2 A194 2H Heavy Hex Nut Plain

9/16 x 18 Ship Auger Wood Bit

5/8-11 x 8 1/2 STRONG-BOLT® 2 Cracked and Uncracked Concrete Wedge Anchor 316 Stainless Steel(20)

5/16-18 x 1 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (100)

3/8-24 x 3/4 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (1425) 5/16-18 Hex Tap Bolts Silicon Bronze The nylon flange head adds3 8 24 x 3 4 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (1425) . L9 High Tensile Strength Hex Cap Screws 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 bolting from AISI alloy steels. L9