tamper-proof

3/4-10 x 3 Flat Socket Cap Screw 18-8 (A2) Stainless Steel

9/16-12 x 2 1/4 Hex Cap Screw SS 316 (A4)

5/16 L9 USS Tension Flatwasher Yellow Zinc Plated Domestic USA (100)

You can utilize these pieces of hardware in solid or hollow surfaces

1-8 x 14 A307A Hex Bolt Hot Dipped Galvanized Hex Sleeve Anchors 304 Stainless Steel tamper-proof1 8 x 14 A307A Hex Bolt Hot Dipped Galvanized. A307A Hex Bolts are manufactured from low carbon steel, typically 1015 1022. Our A307A bolting meets or exceeds ASTM A307 Grade A. Material is manufactured with rolled threads. Zinc plated material meets or exceeds ASTM F1941. Tensile strength will meet or exceed 60,000 psi.