Filter by
System of Measurement
Finish
Fastener Head Type
Threading
Material
Tip Type
Specifications Met
For Use In
Tapping Method
Drive Style
REACH
Export Control Classification Number (ECCN)
RoHS
DFARS Specialty Metals
About Tapping Screws
More
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.
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. | |
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 | 000000 |
| 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 |