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Steel Flanged Hex Head Screws for Wood
These steel screws are hot-dipped galvanized to resist corrosion in wet environments and are a good choice for ACQ-treated (arsenic-free) lumber. The flange reduces the risk of crushing material and the hex head provides a secure grip with a wrench. They press threads into material for a tight, secure hold. To prevent splitting, drill a pilot hole slightly smaller than the screw. Head height includes the flange. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Wd. | Ht. | Flange Dia. | Approximate Threads per Inch | Threading | Minimum Thread Lg. | Specifications Met | Pkg. Qty. | Pkg. | |
Hot-Dipped Galvanized Steel | ||||||||||
1/4"  | ||||||||||
| 1" | 0.375" | 0.28" | 0.56" | 10 | Fully Threaded | 1/2" | ASTM A153 | 100 | 000000000 | 000000 |
| 1 1/2" | 0.375" | 0.28" | 0.56" | 10 | Partially Threaded | 3/4" | ASTM A153 | 50 | 000000000 | 00000 |
| 2" | 0.375" | 0.28" | 0.56" | 10 | Partially Threaded | 1" | ASTM A153 | 50 | 000000000 | 00000 |
| 2 1/2" | 0.375" | 0.28" | 0.56" | 10 | Partially Threaded | 1 1/4" | ASTM A153 | 50 | 000000000 | 00000 |
| 3" | 0.375" | 0.28" | 0.56" | 10 | Partially Threaded | 1 1/2" | ASTM A153 | 50 | 000000000 | 00000 |
5/16" | ||||||||||
| 1" | 0.5" | 0.32" | 0.68" | 9 | Fully Threaded | 1/2" | ASTM A153 | 50 | 000000000 | 00000 |
| 1 1/2" | 0.5" | 0.32" | 0.68" | 9 | Partially Threaded | 3/4" | ASTM A153 | 50 | 000000000 | 00000 |
| 2" | 0.5" | 0.32" | 0.68" | 9 | Partially Threaded | 1" | ASTM A153 | 50 | 000000000 | 00000 |
| 2 1/2" | 0.5" | 0.32" | 0.68" | 9 | Partially Threaded | 1 1/4" | ASTM A153 | 25 | 000000000 | 00000 |
3/8" | ||||||||||
| 1 1/2" | 0.563" | 0.39" | 0.81" | 7 | Fully Threaded | 3/4" | ASTM A153 | 25 | 000000000 | 00000 |
| 2" | 0.563" | 0.39" | 0.81" | 7 | Partially Threaded | 1" | ASTM A153 | 25 | 000000000 | 00000 |
| 2 1/2" | 0.563" | 0.39" | 0.81" | 7 | Partially Threaded | 1 1/4" | ASTM A153 | 25 | 000000000 | 00000 |
| 3" | 0.563" | 0.39" | 0.81" | 7 | Partially Threaded | 1 1/2" | ASTM A153 | 25 | 000000000 | 00000 |
| 4" | 0.563" | 0.39" | 0.81" | 7 | Partially Threaded | 2" | ASTM A153 | 10 | 000000000 | 00000 |
| 5" | 0.563" | 0.39" | 0.81" | 7 | Partially Threaded | 3" | ASTM A153 | 5 | 000000000 | 0000 |
| 6" | 0.563" | 0.39" | 0.81" | 7 | Partially Threaded | 3 1/2" | ASTM A153 | 5 | 000000000 | 00000 |
Steel Hex Head Screws for Wood
These steel screws have corrosion-resistant finishes. Also known as lag bolts, they have a hex head for a secure grip with a wrench. They press threads into material for a tight, secure hold. To prevent splitting, drill a pilot hole slightly smaller than the screw. Length is measured from under the head.
Black-oxide steel screws have a coating that protects the steel from rusting in dry environments and blends in with dark surfaces.
Zinc-plated steel screws resist corrosion in wet environments.
Hot-dipped galvanized steel screws have a thick coating for better corrosion resistance than zinc-plated steel screws. They're a good choice for ACQ-treated (arsenic-free) lumber.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Wd. | Ht. | Approximate Threads per Inch | Threading | Minimum Thread Lg. | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Oxide Steel | |||||||||
1/4" | |||||||||
| 1" | 0.438" | 0.172" | 10 | Fully Threaded | 3/4" | ASME B18.2.1 | 25 | 000000000 | 000000 |
| 1 1/4" | 0.438" | 0.172" | 10 | Fully Threaded | 1 1/8" | ASME B18.2.1 | 10 | 000000000 | 0000 |
| 1 1/2" | 0.438" | 0.172" | 10 | Partially Threaded | 1 1/4" | ASME B18.2.1 | 10 | 000000000 | 0000 |
| 1 3/4" | 0.438" | 0.172" | 10 | Partially Threaded | 1.28" | ASME B18.2.1 | 10 | 000000000 | 0000 |
| 2" | 0.438" | 0.172" | 10 | Partially Threaded | 1 1/2" | ASME B18.2.1 | 10 | 000000000 | 0000 |
| 2 1/2" | 0.438" | 0.172" | 10 | Partially Threaded | 1 3/4" | ASME B18.2.1 | 10 | 000000000 | 00000 |
| 3" | 0.438" | 0.172" | 10 | Partially Threaded | 2" | ASME B18.2.1 | 10 | 000000000 | 00000 |
| 3 1/2" | 0.438" | 0.172" | 10 | Partially Threaded | 2 1/4" | ASME B18.2.1 | 5 | 000000000 | 0000 |
| 4" | 0.438" | 0.172" | 10 | Partially Threaded | 2 1/2" | ASME B18.2.1 | 5 | 000000000 | 0000 |
| 4 1/2" | 0.438" | 0.172" | 10 | Partially Threaded | 2 3/4" | ASME B18.2.1 | 5 | 000000000 | 00000 |
| 5" | 0.438" | 0.172" | 10 | Partially Threaded | 3" | ASME B18.2.1 | 5 | 000000000 | 0000 |
| 5 1/2" | 0.438" | 0.172" | 10 | Partially Threaded | 3 1/4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 6" | 0.438" | 0.172" | 10 | Partially Threaded | 3 1/2" | ASME B18.2.1 | 1 | 000000000 | 0000 |
5/16" | |||||||||
| 1" | 0.5" | 0.219" | 9 | Fully Threaded | 3/4" | ASME B18.2.1 | 10 | 000000000 | 0000 |
| 1 1/4" | 0.5" | 0.219" | 9 | Fully Threaded | 1 1/8" | ASME B18.2.1 | 10 | 000000000 | 0000 |
| 1 1/2" | 0.5" | 0.219" | 9 | Partially Threaded | 1 1/4" | ASME B18.2.1 | 10 | 000000000 | 0000 |
| 1 3/4" | 0.5" | 0.219" | 9 | Partially Threaded | 1.28" | ASME B18.2.1 | 10 | 000000000 | 0000 |
| 2" | 0.5" | 0.219" | 9 | Partially Threaded | 1 1/2" | ASME B18.2.1 | 5 | 000000000 | 0000 |
| 2 1/2" | 0.5" | 0.219" | 9 | Partially Threaded | 1 3/4" | ASME B18.2.1 | 5 | 000000000 | 0000 |
| 3" | 0.5" | 0.219" | 9 | Partially Threaded | 2" | ASME B18.2.1 | 5 | 000000000 | 0000 |
| 3 1/2" | 0.5" | 0.219" | 9 | Partially Threaded | 2 1/4" | ASME B18.2.1 | 5 | 000000000 | 0000 |
| 4" | 0.5" | 0.219" | 9 | Partially Threaded | 2 1/2" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 4 1/2" | 0.5" | 0.219" | 9 | Partially Threaded | 2 3/4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 5" | 0.5" | 0.219" | 9 | Partially Threaded | 3" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 5 1/2" | 0.5" | 0.219" | 9 | Partially Threaded | 3 1/4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 6" | 0.5" | 0.219" | 9 | Partially Threaded | 3 1/2" | ASME B18.2.1 | 1 | 000000000 | 0000 |
3/8" | |||||||||
| 1" | 0.563" | 0.25" | 7 | Fully Threaded | 3/4" | ASME B18.2.1 | 10 | 000000000 | 0000 |
| 1 1/4" | 0.563" | 0.25" | 7 | Fully Threaded | 1 1/8" | ASME B18.2.1 | 10 | 000000000 | 0000 |
| 1 1/2" | 0.563" | 0.25" | 7 | Partially Threaded | 1 1/4" | ASME B18.2.1 | 5 | 000000000 | 0000 |
| 1 3/4" | 0.563" | 0.25" | 7 | Partially Threaded | 1.28" | ASME B18.2.1 | 5 | 000000000 | 0000 |
| 2" | 0.563" | 0.25" | 7 | Partially Threaded | 1 1/2" | ASME B18.2.1 | 5 | 000000000 | 0000 |
| 2 1/2" | 0.563" | 0.25" | 7 | Partially Threaded | 1 3/4" | ASME B18.2.1 | 5 | 000000000 | 0000 |
| 3" | 0.563" | 0.25" | 7 | Partially Threaded | 2" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 3 1/2" | 0.563" | 0.25" | 7 | Partially Threaded | 2 1/4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 4" | 0.563" | 0.25" | 7 | Partially Threaded | 2 1/2" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 4 1/2" | 0.563" | 0.25" | 7 | Partially Threaded | 2 3/4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 5" | 0.563" | 0.25" | 7 | Partially Threaded | 3" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 5 1/2" | 0.563" | 0.25" | 7 | Partially Threaded | 3 1/4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 6" | 0.563" | 0.25" | 7 | Partially Threaded | 3 1/2" | ASME B18.2.1 | 1 | 000000000 | 0000 |
1/2" | |||||||||
| 1 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 1 1/4" | ASME B18.2.1 | 5 | 000000000 | 00000 |
| 2" | 0.75" | 0.344" | 6 | Partially Threaded | 1 1/2" | ASME B18.2.1 | 5 | 000000000 | 00000 |
| 2 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 1 3/4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 3" | 0.75" | 0.344" | 6 | Partially Threaded | 2" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 3 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 2 1/4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 4" | 0.75" | 0.344" | 6 | Partially Threaded | 2 1/2" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 4 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 2 3/4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 5" | 0.75" | 0.344" | 6 | Partially Threaded | 3" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 5 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 3 1/4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 6" | 0.75" | 0.344" | 6 | Partially Threaded | 3 1/2" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 8" | 0.75" | 0.344" | 6 | Partially Threaded | 4 1/2" | ASME B18.2.1 | 1 | 000000000 | 00000 |
| 10" | 0.75" | 0.344" | 6 | Partially Threaded | 5" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 12" | 0.75" | 0.344" | 6 | Partially Threaded | 5" | ASME B18.2.1 | 1 | 000000000 | 00000 |
5/8" | |||||||||
| 2" | 0.938" | 0.422" | 5 | Partially Threaded | 1 1/2" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 2 1/2" | 0.938" | 0.422" | 5 | Partially Threaded | 1 3/4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 3" | 0.938" | 0.422" | 5 | Partially Threaded | 2" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 4" | 0.938" | 0.422" | 5 | Partially Threaded | 2 1/2" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 4 1/2" | 0.938" | 0.422" | 5 | Partially Threaded | 2 3/4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 5" | 0.938" | 0.422" | 5 | Partially Threaded | 3" | ASME B18.2.1 | 1 | 000000000 | 00000 |
| 5 1/2" | 0.938" | 0.422" | 5 | Partially Threaded | 3 1/4" | ASME B18.2.1 | 1 | 000000000 | 00000 |
| 6" | 0.938" | 0.422" | 5 | Partially Threaded | 3 1/2" | ASME B18.2.1 | 1 | 000000000 | 00000 |
3/4" | |||||||||
| 2 1/2" | 1.125" | 0.5" | 4.5 | Partially Threaded | 1 3/4" | ASME B18.2.1 | 1 | 000000000 | 00000 |
| 3" | 1.125" | 0.5" | 4.5 | Partially Threaded | 2" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 3 1/2" | 1.125" | 0.5" | 4.5 | Partially Threaded | 2 1/4" | ASME B18.2.1 | 1 | 000000000 | 00000 |
| 4" | 1.125" | 0.5" | 4.5 | Partially Threaded | 2 1/2" | ASME B18.2.1 | 1 | 000000000 | 00000 |
| 5" | 1.125" | 0.5" | 4.5 | Partially Threaded | 3" | ASME B18.2.1 | 1 | 000000000 | 00000 |
| 6" | 1.125" | 0.5" | 4.5 | Partially Threaded | 3 1/2" | ASME B18.2.1 | 1 | 000000000 | 00000 |
| 8" | 1.125" | 0.5" | 4.5 | Partially Threaded | 4 1/2" | ASME B18.2.1 | 1 | 000000000 | 00000 |
Zinc-Plated Steel | |||||||||
1/4" | |||||||||
| 1" | 0.438" | 0.172" | 10 | Fully Threaded | 3/4" | ASME B18.2.1 | 100 | 000000000 | 0000 |
| 1 1/4" | 0.438" | 0.172" | 10 | Fully Threaded | 1 1/8" | ASME B18.2.1 | 100 | 000000000 | 0000 |
| 1 1/2" | 0.438" | 0.172" | 10 | Partially Threaded | 1 1/4" | ASME B18.2.1 | 100 | 000000000 | 00000 |
| 1 3/4" | 0.438" | 0.172" | 10 | Partially Threaded | 1.28" | ASME B18.2.1 | 100 | 000000000 | 00000 |
| 2" | 0.438" | 0.172" | 10 | Partially Threaded | 1 1/2" | ASME B18.2.1 | 100 | 000000000 | 00000 |
| 2 1/2" | 0.438" | 0.172" | 10 | Partially Threaded | 1 3/4" | ASME B18.2.1 | 100 | 000000000 | 00000 |
| 3" | 0.438" | 0.172" | 10 | Partially Threaded | 2" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 3 1/2" | 0.438" | 0.172" | 10 | Partially Threaded | 2 1/4" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 4" | 0.438" | 0.172" | 10 | Partially Threaded | 2 1/2" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 5" | 0.438" | 0.172" | 10 | Partially Threaded | 3" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 6" | 0.438" | 0.172" | 10 | Partially Threaded | 3 1/2" | ASME B18.2.1 | 25 | 000000000 | 00000 |
5/16" | |||||||||
| 1" | 0.5" | 0.219" | 9 | Fully Threaded | 3/4" | ASME B18.2.1 | 100 | 000000000 | 00000 |
| 1 1/4" | 0.5" | 0.219" | 9 | Fully Threaded | 1 1/8" | ASME B18.2.1 | 100 | 000000000 | 00000 |
| 1 1/2" | 0.5" | 0.219" | 9 | Partially Threaded | 1 1/4" | ASME B18.2.1 | 100 | 000000000 | 00000 |
| 1 3/4" | 0.5" | 0.219" | 9 | Partially Threaded | 1.28" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 2" | 0.5" | 0.219" | 9 | Partially Threaded | 1 1/2" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 2 1/2" | 0.5" | 0.219" | 9 | Partially Threaded | 1 3/4" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 3" | 0.5" | 0.219" | 9 | Partially Threaded | 2" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 3 1/2" | 0.5" | 0.219" | 9 | Partially Threaded | 2 1/4" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 4" | 0.5" | 0.219" | 9 | Partially Threaded | 2 1/2" | ASME B18.2.1 | 25 | 000000000 | 00000 |
| 5" | 0.5" | 0.219" | 9 | Partially Threaded | 3" | ASME B18.2.1 | 25 | 000000000 | 00000 |
| 6" | 0.5" | 0.219" | 9 | Partially Threaded | 3 1/2" | ASME B18.2.1 | 25 | 000000000 | 00000 |
3/8" | |||||||||
| 1" | 0.563" | 0.25" | 7 | Fully Threaded | 3/4" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 1 1/4" | 0.563" | 0.25" | 7 | Fully Threaded | 1 1/8" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 1 1/2" | 0.563" | 0.25" | 7 | Partially Threaded | 1 1/4" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 1 3/4" | 0.563" | 0.25" | 7 | Partially Threaded | 1.28" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 2" | 0.563" | 0.25" | 7 | Partially Threaded | 1 1/2" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 2 1/2" | 0.563" | 0.25" | 7 | Partially Threaded | 1 3/4" | ASME B18.2.1 | 25 | 000000000 | 0000 |
| 3" | 0.563" | 0.25" | 7 | Partially Threaded | 2" | ASME B18.2.1 | 25 | 000000000 | 00000 |
| 3 1/2" | 0.563" | 0.25" | 7 | Partially Threaded | 2 1/4" | ASME B18.2.1 | 25 | 000000000 | 00000 |
| 4" | 0.563" | 0.25" | 7 | Partially Threaded | 2 1/2" | ASME B18.2.1 | 25 | 000000000 | 00000 |
| 4 1/2" | 0.563" | 0.25" | 7 | Partially Threaded | 2 3/4" | ASME B18.2.1 | 25 | 000000000 | 00000 |
| 5" | 0.563" | 0.25" | 7 | Partially Threaded | 3" | ASME B18.2.1 | 25 | 000000000 | 00000 |
| 6" | 0.563" | 0.25" | 7 | Partially Threaded | 3 1/2" | ASME B18.2.1 | 10 | 000000000 | 0000 |
| 7" | 0.563" | 0.25" | 7 | Partially Threaded | 4" | ASME B18.2.1 | 10 | 000000000 | 00000 |
| 8" | 0.563" | 0.25" | 7 | Partially Threaded | 4 1/2" | ASME B18.2.1 | 5 | 000000000 | 0000 |
1/2" | |||||||||
| 1 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 1 1/4" | ASME B18.2.1 | 25 | 000000000 | 00000 |
| 2" | 0.75" | 0.344" | 6 | Partially Threaded | 1 1/2" | ASME B18.2.1 | 25 | 000000000 | 00000 |
| 2 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 1 3/4" | ASME B18.2.1 | 10 | 000000000 | 0000 |
| 3" | 0.75" | 0.344" | 6 | Partially Threaded | 2" | ASME B18.2.1 | 10 | 000000000 | 00000 |
| 3 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 2 1/4" | ASME B18.2.1 | 10 | 000000000 | 0000 |
| 4" | 0.75" | 0.344" | 6 | Partially Threaded | 2 1/2" | ASME B18.2.1 | 5 | 000000000 | 0000 |
| 4 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 2 3/4" | ASME B18.2.1 | 10 | 000000000 | 00000 |
| 5" | 0.75" | 0.344" | 6 | Partially Threaded | 3" | ASME B18.2.1 | 10 | 000000000 | 00000 |
| 6" | 0.75" | 0.344" | 6 | Partially Threaded | 3 1/2" | ASME B18.2.1 | 10 | 000000000 | 00000 |
| 7" | 0.75" | 0.344" | 6 | Partially Threaded | 4" | ASME B18.2.1 | 10 | 000000000 | 00000 |
| 8" | 0.75" | 0.344" | 6 | Partially Threaded | 4 1/2" | ASME B18.2.1 | 5 | 000000000 | 00000 |
5/8" | |||||||||
| 3" | 0.938" | 0.422" | 5 | Partially Threaded | 2" | ASME B18.2.1 | 5 | 000000000 | 0000 |
| 4" | 0.938" | 0.422" | 5 | Partially Threaded | 2 1/2" | ASME B18.2.1 | 5 | 000000000 | 00000 |
| 5" | 0.938" | 0.422" | 5 | Partially Threaded | 3" | ASME B18.2.1 | 5 | 000000000 | 00000 |
| 7" | 0.938" | 0.422" | 5 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
3/4" | |||||||||
| 3" | 1.125" | 0.5" | 4.5 | Partially Threaded | 2" | ASME B18.2.1 | 5 | 000000000 | 00000 |
| 4" | 1.125" | 0.5" | 4.5 | Partially Threaded | 2 1/2" | ASME B18.2.1 | 5 | 000000000 | 00000 |
| 5" | 1.125" | 0.5" | 4.5 | Partially Threaded | 3" | ASME B18.2.1 | 5 | 000000000 | 00000 |
| 6" | 1.125" | 0.5" | 4.5 | Partially Threaded | 3 1/2" | ASME B18.2.1 | 1 | 000000000 | 0000 |
Black Zinc-Plated Steel | |||||||||
1/4" | |||||||||
| 1" | 0.438" | 0.172" | 10 | Partially Threaded | 0.667" | ASME B18.2.1 | 100 | 000000000 | 00000 |
| 1 1/2" | 0.438" | 0.172" | 10 | Partially Threaded | 1" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 2" | 0.438" | 0.172" | 10 | Partially Threaded | 1.333" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 2 1/2" | 0.438" | 0.172" | 10 | Partially Threaded | 1.667" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 3" | 0.438" | 0.172" | 10 | Partially Threaded | 2" | ASME B18.2.1 | 50 | 000000000 | 00000 |
5/16" | |||||||||
| 1 1/2" | 0.5" | 0.219" | 9 | Partially Threaded | 1" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 2" | 0.5" | 0.219" | 9 | Partially Threaded | 1.333" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 2 1/2" | 0.5" | 0.219" | 9 | Partially Threaded | 1.667" | ASME B18.2.1 | 50 | 000000000 | 00000 |
| 3" | 0.5" | 0.219" | 9 | Partially Threaded | 2" | ASME B18.2.1 | 25 | 000000000 | 00000 |
3/8" | |||||||||
| 1 1/2" | 0.563" | 0.25" | 7 | Partially Threaded | 1" | ASME B18.2.1 | 25 | 000000000 | 00000 |
| 2" | 0.563" | 0.25" | 7 | Partially Threaded | 1.333" | ASME B18.2.1 | 25 | 000000000 | 00000 |
| 2 1/2" | 0.563" | 0.25" | 7 | Partially Threaded | 1.667" | ASME B18.2.1 | 10 | 000000000 | 0000 |
| 3" | 0.563" | 0.25" | 7 | Partially Threaded | 2" | ASME B18.2.1 | 25 | 000000000 | 00000 |
| 4" | 0.563" | 0.25" | 7 | Partially Threaded | 2.667" | ASME B18.2.1 | 10 | 000000000 | 0000 |
Hot-Dipped Galvanized Steel | |||||||||
1/4" | |||||||||
| 1" | 0.438" | 0.172" | 10 | Partially Threaded | 0.667" | ASME B18.2.1, ASTM A307, SAE J429 | 100 | 000000000 | 00000 |
| 1 1/4" | 0.438" | 0.172" | 10 | Partially Threaded | 0.833" | ASME B18.2.1, ASTM A307, SAE J429 | 100 | 000000000 | 00000 |
| 1 1/2" | 0.438" | 0.172" | 10 | Partially Threaded | 1" | ASME B18.2.1, ASTM A307, SAE J429 | 100 | 000000000 | 00000 |
| 2" | 0.438" | 0.172" | 10 | Partially Threaded | 1.333" | ASME B18.2.1, ASTM A307, SAE J429 | 100 | 000000000 | 00000 |
| 2 1/2" | 0.438" | 0.172" | 10 | Partially Threaded | 1.667" | ASME B18.2.1, ASTM A307, SAE J429 | 50 | 000000000 | 00000 |
| 3" | 0.438" | 0.172" | 10 | Partially Threaded | 2" | ASME B18.2.1, ASTM A307, SAE J429 | 50 | 000000000 | 00000 |
| 3 1/2" | 0.438" | 0.172" | 10 | Partially Threaded | 2.333" | ASME B18.2.1, ASTM A307, SAE J429 | 50 | 000000000 | 00000 |
| 4" | 0.438" | 0.172" | 10 | Partially Threaded | 2.667" | ASME B18.2.1, ASTM A307, SAE J429 | 50 | 000000000 | 00000 |
| 4 1/2" | 0.438" | 0.172" | 10 | Partially Threaded | 3" | ASME B18.2.1, ASTM A307, SAE J429 | 25 | 000000000 | 00000 |
| 5" | 0.438" | 0.172" | 10 | Partially Threaded | 3.333" | ASME B18.2.1, ASTM A307, SAE J429 | 25 | 000000000 | 00000 |
| 5 1/2" | 0.438" | 0.172" | 10 | Partially Threaded | 3 1/2" | ASME B18.2.1, ASTM A307, SAE J429 | 25 | 000000000 | 00000 |
| 6" | 0.438" | 0.172" | 10 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 25 | 000000000 | 00000 |
5/16" | |||||||||
| 1" | 0.5" | 0.219" | 9 | Partially Threaded | 0.667" | ASME B18.2.1, ASTM A307, SAE J429 | 50 | 000000000 | 00000 |
| 1 1/4" | 0.5" | 0.219" | 9 | Partially Threaded | 0.833" | ASME B18.2.1, ASTM A307, SAE J429 | 50 | 000000000 | 00000 |
| 1 1/2" | 0.5" | 0.219" | 9 | Partially Threaded | 1" | ASME B18.2.1, ASTM A307, SAE J429 | 50 | 000000000 | 00000 |
| 2" | 0.5" | 0.219" | 9 | Partially Threaded | 1.333" | ASME B18.2.1, ASTM A307, SAE J429 | 50 | 000000000 | 00000 |
| 2 1/2" | 0.5" | 0.219" | 9 | Partially Threaded | 1.667" | ASME B18.2.1, ASTM A307, SAE J429 | 50 | 000000000 | 00000 |
| 3" | 0.5" | 0.219" | 9 | Partially Threaded | 2" | ASME B18.2.1, ASTM A307, SAE J429 | 50 | 000000000 | 00000 |
| 3 1/2" | 0.5" | 0.219" | 9 | Partially Threaded | 2.333" | ASME B18.2.1, ASTM A307, SAE J429 | 25 | 000000000 | 00000 |
| 4" | 0.5" | 0.219" | 9 | Partially Threaded | 2.667" | ASME B18.2.1, ASTM A307, SAE J429 | 25 | 000000000 | 00000 |
| 4 1/2" | 0.5" | 0.219" | 9 | Partially Threaded | 3" | ASME B18.2.1, ASTM A307, SAE J429 | 25 | 000000000 | 00000 |
| 5" | 0.5" | 0.219" | 9 | Partially Threaded | 3.333" | ASME B18.2.1, ASTM A307, SAE J429 | 25 | 000000000 | 00000 |
| 6" | 0.5" | 0.219" | 9 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 25 | 000000000 | 00000 |
3/8" | |||||||||
| 1" | 0.563" | 0.25" | 7 | Partially Threaded | 5/8" | ASME B18.2.1, ASTM A307, SAE J429 | 50 | 000000000 | 00000 |
| 1 1/4" | 0.563" | 0.25" | 7 | Partially Threaded | 0.833" | ASME B18.2.1, ASTM A307, SAE J429 | 50 | 000000000 | 00000 |
| 1 1/2" | 0.563" | 0.25" | 7 | Partially Threaded | 1" | ASME B18.2.1, ASTM A307, SAE J429 | 50 | 000000000 | 00000 |
| 1 3/4" | 0.563" | 0.25" | 7 | Partially Threaded | 1.167" | ASME B18.2.1, ASTM A307, SAE J429 | 50 | 000000000 | 00000 |
| 2" | 0.563" | 0.25" | 7 | Partially Threaded | 1.333" | ASME B18.2.1, ASTM A307, SAE J429 | 50 | 000000000 | 00000 |
| 2 1/2" | 0.563" | 0.25" | 7 | Partially Threaded | 1.667" | ASME B18.2.1, ASTM A307, SAE J429 | 25 | 000000000 | 00000 |
| 3" | 0.563" | 0.25" | 7 | Partially Threaded | 2" | ASME B18.2.1, ASTM A307, SAE J429 | 25 | 000000000 | 00000 |
| 3 1/2" | 0.563" | 0.25" | 7 | Partially Threaded | 2.333" | ASME B18.2.1, ASTM A307, SAE J429 | 25 | 000000000 | 00000 |
| 4" | 0.563" | 0.25" | 7 | Partially Threaded | 2.667" | ASME B18.2.1, ASTM A307, SAE J429 | 25 | 000000000 | 00000 |
| 4 1/2" | 0.563" | 0.25" | 7 | Partially Threaded | 3" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 00000 |
| 5" | 0.563" | 0.25" | 7 | Partially Threaded | 3.333" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 00000 |
| 5 1/2" | 0.563" | 0.25" | 7 | Partially Threaded | 3 1/2" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 00000 |
| 6" | 0.563" | 0.25" | 7 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 00000 |
| 7" | 0.563" | 0.25" | 7 | Partially Threaded | 4.667" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 00000 |
| 8" | 0.563" | 0.25" | 7 | Partially Threaded | 5.333" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 00000 |
| 9" | 0.563" | 0.25" | 7 | Partially Threaded | 5.333" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 00000 |
| 10" | 0.563" | 0.25" | 7 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 00000 |
| 12" | 0.563" | 0.25" | 7 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 00000 |
1/2" | |||||||||
| 2" | 0.75" | 0.344" | 6 | Partially Threaded | 1.333" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 0000 |
| 2 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 1.667" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 00000 |
| 3" | 0.75" | 0.344" | 6 | Partially Threaded | 2" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 00000 |
| 3 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 2.333" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 00000 |
| 4" | 0.75" | 0.344" | 6 | Partially Threaded | 2.667" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 00000 |
| 4 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 3" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 00000 |
| 5" | 0.75" | 0.344" | 6 | Partially Threaded | 3.333" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 00000 |
| 5 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 3 1/2" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 00000 |
| 6" | 0.75" | 0.344" | 6 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 00000 |
| 7" | 0.75" | 0.344" | 6 | Partially Threaded | 4.667" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 00000 |
| 8" | 0.75" | 0.344" | 6 | Partially Threaded | 5.333" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 00000 |
| 9" | 0.75" | 0.344" | 6 | Partially Threaded | 5.333" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 0000 |
| 10" | 0.75" | 0.344" | 6 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 0000 |
| 12" | 0.75" | 0.344" | 6 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 0000 |
5/8" | |||||||||
| 2 1/2" | 0.938" | 0.422" | 5 | Partially Threaded | 1.667" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 00000 |
| 3" | 0.938" | 0.422" | 5 | Partially Threaded | 2" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 00000 |
| 4" | 0.938" | 0.422" | 5 | Partially Threaded | 2.667" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 00000 |
| 4 1/2" | 0.938" | 0.422" | 5 | Partially Threaded | 3" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 00000 |
| 5" | 0.938" | 0.422" | 5 | Partially Threaded | 3.333" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 00000 |
| 6" | 0.938" | 0.422" | 5 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 0000 |
| 7" | 0.938" | 0.422" | 5 | Partially Threaded | 4.667" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 0000 |
| 8" | 0.938" | 0.422" | 5 | Partially Threaded | 5.333" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 0000 |
| 10" | 0.938" | 0.422" | 5 | Partially Threaded | 6.667" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 0000 |
| 12" | 0.938" | 0.422" | 5 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 00000 |
| 16" | 0.938" | 0.422" | 5 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 00000 |
3/4" | |||||||||
| 4" | 1.125" | 0.5" | 4.5 | Partially Threaded | 2.667" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 0000 |
| 5" | 1.125" | 0.5" | 4.5 | Partially Threaded | 3.333" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 0000 |
| 6" | 1.125" | 0.5" | 4.5 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 0000 |
| 7" | 1.125" | 0.5" | 4.5 | Partially Threaded | 4.667" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 0000 |
| 8" | 1.125" | 0.5" | 4.5 | Partially Threaded | 5.333" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 00000 |
| 10" | 1.125" | 0.5" | 4.5 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 00000 |
| 12" | 1.125" | 0.5" | 4.5 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 00000 |
Metric Steel Hex Head Screws for Wood
Drive the pointed tip of these screws into soft material, such as wood and drywall. They are also known as lag bolts. Made from steel, they are strong and wear resistant, and have a zinc plating to protect the steel from rust in wet environments. The hex head provides a secure grip for wrenches, so you can tighten them in place. They meet DIN 571, which is an international standard for the dimensions of wood screws.
Drill a pilot hole slightly smaller than the screw to avoid splitting shorter boards. Screws with larger diameters are more likely to split your wood.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||
|---|---|---|---|---|---|---|---|---|
| Lg., mm | Wd., mm | Ht., mm | Threading | Min. Thread Lg., mm | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||||
M5 | ||||||||
| 20 | 8 | 3.5 | Partially Threaded | 12 | DIN 571 | 100 | 000000000 | 00000 |
| 25 | 8 | 3.5 | Partially Threaded | 15 | DIN 571 | 100 | 000000000 | 00000 |
| 30 | 8 | 3.5 | Partially Threaded | 18 | DIN 571 | 100 | 000000000 | 00000 |
| 35 | 8 | 3.5 | Partially Threaded | 21 | DIN 571 | 50 | 000000000 | 0000 |
| 40 | 8 | 3.5 | Partially Threaded | 24 | DIN 571 | 50 | 000000000 | 00000 |
| 45 | 8 | 3.5 | Partially Threaded | 27 | DIN 571 | 50 | 000000000 | 0000 |
| 50 | 8 | 3.5 | Partially Threaded | 30 | DIN 571 | 50 | 000000000 | 00000 |
| 60 | 8 | 3.5 | Partially Threaded | 36 | DIN 571 | 50 | 000000000 | 00000 |
M6 | ||||||||
| 20 | 10 | 4 | Partially Threaded | 12 | DIN 571 | 50 | 000000000 | 0000 |
| 25 | 10 | 4 | Partially Threaded | 15 | DIN 571 | 50 | 000000000 | 0000 |
| 30 | 10 | 4 | Partially Threaded | 18 | DIN 571 | 50 | 000000000 | 00000 |
| 35 | 10 | 4 | Partially Threaded | 21 | DIN 571 | 50 | 000000000 | 00000 |
| 40 | 10 | 4 | Partially Threaded | 24 | DIN 571 | 50 | 000000000 | 0000 |
| 45 | 10 | 4 | Partially Threaded | 27 | DIN 571 | 50 | 000000000 | 00000 |
| 50 | 10 | 4 | Partially Threaded | 30 | DIN 571 | 25 | 000000000 | 0000 |
| 55 | 10 | 4 | Partially Threaded | 33 | DIN 571 | 25 | 000000000 | 0000 |
| 60 | 10 | 4 | Partially Threaded | 36 | DIN 571 | 25 | 000000000 | 0000 |
| 70 | 10 | 4 | Partially Threaded | 42 | DIN 571 | 25 | 000000000 | 0000 |
| 80 | 10 | 4 | Partially Threaded | 48 | DIN 571 | 25 | 000000000 | 00000 |
| 90 | 10 | 4 | Partially Threaded | 54 | DIN 571 | 25 | 000000000 | 00000 |
| 100 | 10 | 4 | Partially Threaded | 60 | DIN 571 | 25 | 000000000 | 00000 |
| 120 | 10 | 4 | Partially Threaded | 72 | DIN 571 | 10 | 000000000 | 0000 |
M8 | ||||||||
| 25 | 13 | 5.5 | Partially Threaded | 15 | DIN 571 | 25 | 000000000 | 0000 |
| 30 | 13 | 5.5 | Partially Threaded | 18 | DIN 571 | 25 | 000000000 | 0000 |
| 35 | 13 | 5.5 | Partially Threaded | 21 | DIN 571 | 25 | 000000000 | 00000 |
| 40 | 13 | 5.5 | Partially Threaded | 24 | DIN 571 | 25 | 000000000 | 00000 |
| 45 | 13 | 5.5 | Partially Threaded | 27 | DIN 571 | 25 | 000000000 | 00000 |
| 50 | 13 | 5.5 | Partially Threaded | 30 | DIN 571 | 25 | 000000000 | 00000 |
| 55 | 13 | 5.5 | Partially Threaded | 33 | DIN 571 | 25 | 000000000 | 00000 |
| 60 | 13 | 5.5 | Partially Threaded | 36 | DIN 571 | 10 | 000000000 | 0000 |
| 70 | 13 | 5.5 | Partially Threaded | 42 | DIN 571 | 10 | 000000000 | 0000 |
| 80 | 13 | 5.5 | Partially Threaded | 48 | DIN 571 | 10 | 000000000 | 0000 |
| 90 | 13 | 5.5 | Partially Threaded | 54 | DIN 571 | 10 | 000000000 | 0000 |
| 100 | 13 | 5.5 | Partially Threaded | 60 | DIN 571 | 10 | 000000000 | 0000 |
| 120 | 13 | 5.5 | Partially Threaded | 72 | DIN 571 | 10 | 000000000 | 0000 |
| 130 | 13 | 5.5 | Partially Threaded | 78 | DIN 571 | 10 | 000000000 | 00000 |
| 140 | 13 | 5.5 | Partially Threaded | 84 | DIN 571 | 10 | 000000000 | 00000 |
| 160 | 13 | 5.5 | Partially Threaded | 96 | DIN 571 | 5 | 000000000 | 0000 |
M10 | ||||||||
| 30 | 17 | 7 | Partially Threaded | 18 | DIN 571 | 10 | 000000000 | 0000 |
| 35 | 17 | 7 | Partially Threaded | 21 | DIN 571 | 10 | 000000000 | 0000 |
| 40 | 17 | 7 | Partially Threaded | 24 | DIN 571 | 10 | 000000000 | 0000 |
| 45 | 17 | 7 | Partially Threaded | 27 | DIN 571 | 10 | 000000000 | 0000 |
| 50 | 17 | 7 | Partially Threaded | 30 | DIN 571 | 10 | 000000000 | 0000 |
| 55 | 17 | 7 | Partially Threaded | 33 | DIN 571 | 10 | 000000000 | 0000 |
| 60 | 17 | 7 | Partially Threaded | 36 | DIN 571 | 10 | 000000000 | 0000 |
| 70 | 17 | 7 | Partially Threaded | 42 | DIN 571 | 10 | 000000000 | 00000 |
| 80 | 17 | 7 | Partially Threaded | 48 | DIN 571 | 10 | 000000000 | 00000 |
| 90 | 17 | 7 | Partially Threaded | 54 | DIN 571 | 10 | 000000000 | 00000 |
| 100 | 17 | 7 | Partially Threaded | 60 | DIN 571 | 10 | 000000000 | 00000 |
| 120 | 17 | 7 | Partially Threaded | 72 | DIN 571 | 5 | 000000000 | 0000 |
| 140 | 17 | 7 | Partially Threaded | 84 | DIN 571 | 5 | 000000000 | 00000 |
| 160 | 17 | 7 | Partially Threaded | 96 | DIN 571 | 5 | 000000000 | 0000 |
| 180 | 17 | 7 | Partially Threaded | 108 | DIN 571 | 5 | 000000000 | 00000 |
| 200 | 17 | 7 | Partially Threaded | 120 | DIN 571 | 1 | 000000000 | 0000 |
M12 | ||||||||
| 40 | 19 | 8 | Partially Threaded | 24 | DIN 571 | 10 | 000000000 | 00000 |
| 45 | 19 | 8 | Partially Threaded | 27 | DIN 571 | 10 | 000000000 | 0000 |
| 50 | 19 | 8 | Partially Threaded | 30 | DIN 571 | 10 | 000000000 | 00000 |
| 60 | 19 | 8 | Partially Threaded | 36 | DIN 571 | 5 | 000000000 | 0000 |
| 70 | 19 | 8 | Partially Threaded | 42 | DIN 571 | 5 | 000000000 | 0000 |
| 80 | 19 | 8 | Partially Threaded | 48 | DIN 571 | 5 | 000000000 | 0000 |
| 90 | 19 | 8 | Partially Threaded | 54 | DIN 571 | 5 | 000000000 | 0000 |
| 100 | 19 | 8 | Partially Threaded | 60 | DIN 571 | 5 | 000000000 | 00000 |
| 120 | 19 | 8 | Partially Threaded | 72 | DIN 571 | 5 | 000000000 | 00000 |
| 140 | 19 | 8 | Partially Threaded | 84 | DIN 571 | 5 | 000000000 | 00000 |
| 160 | 19 | 8 | Partially Threaded | 96 | DIN 571 | 1 | 000000000 | 0000 |
| 180 | 19 | 8 | Partially Threaded | 108 | DIN 571 | 1 | 000000000 | 0000 |
| 200 | 19 | 8 | Partially Threaded | 120 | DIN 571 | 1 | 000000000 | 0000 |
| 220 | 19 | 8 | Partially Threaded | 132 | DIN 571 | 1 | 000000000 | 0000 |
| 240 | 19 | 8 | Partially Threaded | 144 | DIN 571 | 1 | 000000000 | 0000 |
M16 | ||||||||
| 60 | 24 | 10 | Partially Threaded | 36 | DIN 571 | 1 | 000000000 | 0000 |
| 70 | 24 | 10 | Partially Threaded | 42 | DIN 571 | 1 | 000000000 | 0000 |
| 80 | 24 | 10 | Partially Threaded | 48 | DIN 571 | 1 | 000000000 | 0000 |
| 90 | 24 | 10 | Partially Threaded | 54 | DIN 571 | 1 | 000000000 | 0000 |
| 100 | 24 | 10 | Partially Threaded | 60 | DIN 571 | 1 | 000000000 | 0000 |
| 120 | 24 | 10 | Partially Threaded | 72 | DIN 571 | 1 | 000000000 | 0000 |