ThruLOK® comes in specific lengths that allow contractors to replace their 1/2" carriage and through-bolts in three primary deck applications:

7/8-9 x 2 1/2 Hex Cap Screw SS 18-8 (A2)

3/4-10 x 3 1/4 Hex Cap Screw SS 18-8 (A2)

7/8-9 x 2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (15)

7/8-14 x 2 3/4 Grade 8 Hex Cap Screw Yellow Zinc Plated

7/8-9 x 4 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (10) 1/2 Hex Lag Screws Hot Dipped Galvanized ThruLOK® comes in specific lengths7 8 9 x 4 1 2 Grade 8 Hex Cap Screw Plain Domestic USA (15). Grade 8 Hex Cap Screws are manufactured in the USA from medium carbon alloy steel. In diameters 1 4 to 1 1 2 inches our Grade 8 material meets or exceeds SAE J429 Grade 8 specifications. Diameters over 1 1 2 inches meet or exceed ASTM A354 Grade BD. All material is manufactured with rolled threads. Yellow zinc plated bolting will meet or exceed ASTM F1941. Typical hardness on diameters 1 4