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About Tapping Screws
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About Hex Head Screws and Bolts
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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 | 0000 |
| 5" | 0.438" | 0.172" | 10 | Partially Threaded | 3.333" | ASME B18.2.1, ASTM A307, SAE J429 | 25 | 000000000 | 0000 |
| 5 1/2" | 0.438" | 0.172" | 10 | Partially Threaded | 3.5" | 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 | 0000 |
| 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 | 0.625" | ASME B18.2.1, ASTM A307, SAE J429 | 50 | 000000000 | 0000 |
| 1 1/4" | 0.563" | 0.25" | 7 | Partially Threaded | 0.833" | ASME B18.2.1, ASTM A307, SAE J429 | 50 | 000000000 | 0000 |
| 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 | 0000 |
| 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 | 0000 |
| 5" | 0.563" | 0.25" | 7 | Partially Threaded | 3.333" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 0000 |
| 5 1/2" | 0.563" | 0.25" | 7 | Partially Threaded | 3.5" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 0000 |
| 6" | 0.563" | 0.25" | 7 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 0000 |
| 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 | 0000 |
| 10" | 0.563" | 0.25" | 7 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 0000 |
| 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 | 0000 |
| 3" | 0.75" | 0.344" | 6 | Partially Threaded | 2" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 0000 |
| 3 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 2.333" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 0000 |
| 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 | 3.5" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 0000 |
| 6" | 0.75" | 0.344" | 6 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 0000 |
| 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 | 0000 |
| 3" | 0.938" | 0.422" | 5 | Partially Threaded | 2" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 0000 |
| 3 1/2" | 0.938" | 0.422" | 5 | Partially Threaded | 2.333" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 0000 |
| 4" | 0.938" | 0.422" | 5 | Partially Threaded | 2.667" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 0000 |
| 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 |
| 9" | 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 | 0000 |
| 16" | 0.938" | 0.422" | 5 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 0000 |
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 | 0000 |
| 10" | 1.125" | 0.5" | 4.5 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 0000 |
| 12" | 1.125" | 0.5" | 4.5 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 0000 |
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 | 0.5" | ASTM A153 | 100 | 000000000 | 000000 |
| 1 1/2" | 0.375" | 0.28" | 0.56" | 10 | Partially Threaded | 0.75" | 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 | 1.25" | ASTM A153 | 50 | 000000000 | 00000 |
| 3" | 0.375" | 0.28" | 0.56" | 10 | Partially Threaded | 1.5" | ASTM A153 | 50 | 000000000 | 00000 |
5/16" | ||||||||||
| 1" | 0.5" | 0.32" | 0.68" | 9 | Fully Threaded | 0.5" | ASTM A153 | 50 | 000000000 | 00000 |
| 1 1/2" | 0.5" | 0.32" | 0.68" | 9 | Partially Threaded | 0.75" | 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 | 1.25" | ASTM A153 | 25 | 000000000 | 00000 |
3/8" | ||||||||||
| 1 1/2" | 0.563" | 0.39" | 0.81" | 7 | Fully Threaded | 0.75" | 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 | 1.25" | ASTM A153 | 25 | 000000000 | 00000 |
| 3" | 0.563" | 0.39" | 0.81" | 7 | Partially Threaded | 1.5" | ASTM A153 | 25 | 000000000 | 00000 |
| 4" | 0.563" | 0.39" | 0.81" | 7 | Partially Threaded | 2" | ASTM A153 | 10 | 000000000 | 0000 |
| 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 | 3.5" | ASTM A153 | 5 | 000000000 | 00000 |
Wood Screw-Style Hangers
Drive these hangers into wood with an adjustable wrench, pliers, or a special driver bit (sold separately). They’re also known as eye lags.
Zinc- and zinc yellow-chromate plated steel hangers are corrosion resistant in wet environments. The zinc yellow-chromate plated steel hangers meet quality standards outlined in ASTM B633 and dimensional standards outlined in ASME B18.2.1.
For technical drawings and 3-D models, click on a part number.
Hangers | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | Driver Bits | |||||||||||||
| Screw Size | Lg. | Threading | Thread Lg. | Eye Dia. | Wd. | Thick. | Ht. | For Use In | Specifications Met | Pkg. Qty. | Pkg. | Each | ||
Zinc Yellow-Chromate Plated Steel | ||||||||||||||
| 1/4" | 3" | Partially Threaded | 1 1/2" | 3/16" | 13/32" | 3/32" | 23/32" | Wood | ASME B18.2.1, ASTM B633 | 50 | 000000000 | 000000 | 0000000 | 00000 |
| 1/4" | 4" | Partially Threaded | 1 1/2" | 3/16" | 13/32" | 3/32" | 23/32" | Wood | ASME B18.2.1, ASTM B633 | 25 | 000000000 | 00000 | 0000000 | 0000 |
| 1/4" | 5" | Partially Threaded | 1 1/2" | 3/16" | 13/32" | 3/32" | 23/32" | Wood | ASME B18.2.1, ASTM B633 | 25 | 000000000 | 00000 | 0000000 | 0000 |
| 5/16" | 3 1/2" | Partially Threaded | 1 3/4" | 1/4" | 7/16" | 3/32" | 9/16" | Wood | ASME B18.2.1, ASTM B633 | 25 | 000000000 | 00000 | 0000000 | 0000 |