System of Measurement System of Measurement |
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Screw Size Screw Size | Show |
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Screw Size Screw Size | Hide |
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Finish Finish |
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Material Material |
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Head Type Head Type |
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 | Hex |
Threading Threading |
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 | Partially Threaded |
 | Threaded on Both Ends |
Tip Type Tip Type |
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 | Pointed |
For Use In For Use In |
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Minimum Thread Length Minimum Thread Length |
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Drive Style Drive Style |
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Approximate Threads per Inch Approximate Threads per Inch |
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Thread Size Thread Size |
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Thread Type Thread Type |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Tapping Method Tapping Method |
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 | Thread Forming |
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Thread Fit Thread Fit |
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Hardness Hardness |
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About Tapping Screws
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About Threaded Studs and Rods
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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.
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 | |||||||||
1/2" | |||||||||
| 1 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 1 1/4" | ASME B18.2.1 | 5 | 000000000 | 000000 |
| 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 |
Zinc-Plated Steel | |||||||||
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 |
Hot-Dipped Galvanized Steel | |||||||||
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 |
18-8 Stainless Steel Hex Head Screws for Wood
18-8 stainless steel screws have good chemical resistance and are a good choice for ACQ-treated (arsenic-free) lumber. 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. They may be mildly magnetic. Length is measured from under the head.
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. | |
18-8 Stainless Steel | |||||||||
1/2" | |||||||||
| 1 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 1" | ASME B18.2.1 | 5 | 000000000 | 00000 |
| 1 3/4" | 0.75" | 0.344" | 6 | Partially Threaded | 1.167" | ASME B18.2.1 | 5 | 000000000 | 0000 |
| 2" | 0.75" | 0.344" | 6 | Partially Threaded | 1.333" | ASME B18.2.1 | 5 | 000000000 | 0000 |
| 2 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 1.667" | ASME B18.2.1 | 5 | 000000000 | 00000 |
| 3" | 0.75" | 0.344" | 6 | Partially Threaded | 2" | ASME B18.2.1 | 5 | 000000000 | 00000 |
| 3 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 2.333" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 4" | 0.75" | 0.344" | 6 | Partially Threaded | 2.667" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 4 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 3" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 5" | 0.75" | 0.344" | 6 | Partially Threaded | 3.333" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 5 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 3.333" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 6" | 0.75" | 0.344" | 6 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 7" | 0.75" | 0.344" | 6 | Partially Threaded | 4.667" | ASME B18.2.1 | 1 | 000000000 | 00000 |
| 8" | 0.75" | 0.344" | 6 | Partially Threaded | 5.333" | ASME B18.2.1 | 1 | 000000000 | 00000 |
| 10" | 0.75" | 0.344" | 6 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 00000 |
| 12" | 0.75" | 0.344" | 6 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 00000 |
Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws for Wood
More corrosion resistant than 18-8 stainless steel screws, these have excellent resistance to chemicals and salt water and are a good choice for ACQ-treated (arsenic-free) lumber. 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. They may be mildly magnetic. Length is measured from under the head.
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. | |
316 Stainless Steel | |||||||||
1/2" | |||||||||
| 1 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 1" | ASME B18.2.1 | 1 | 000000000 | 00000 |
| 2" | 0.75" | 0.344" | 6 | Partially Threaded | 1.333" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 2 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 1.667" | 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 | 2.333" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 4" | 0.75" | 0.344" | 6 | Partially Threaded | 2.667" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 4 1/2" | 0.75" | 0.344" | 6 | Partially Threaded | 3" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 5" | 0.75" | 0.344" | 6 | Partially Threaded | 3.333" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 6" | 0.75" | 0.344" | 6 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
| 7" | 0.75" | 0.344" | 6 | Partially Threaded | 4.667" | ASME B18.2.1 | 1 | 000000000 | 00000 |
| 8" | 0.75" | 0.344" | 6 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 00000 |
| 10" | 0.75" | 0.344" | 6 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 00000 |
| 12" | 0.75" | 0.344" | 6 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 00000 |
Stainless Steel Wood Screw Threaded Studs
18-8 stainless steel studs have good chemical resistance and may be mildly magnetic. Also known as hanger bolts, use them to hang, mount, and fasten parts to wood structures. Install with a stud driver or create wrench flats by threading two nuts onto the stud and jamming them together.
For technical drawings and 3-D models, click on a part number.
(A) | (B) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Screw Size | Thread Lg. | Thread Size | Thread Lg. | Lg. | Tensile Strength | Hardness | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||
| 1/2" | 2" | 1/2"-13 | 1" | 3" | Not Rated | Not Rated | 1 | 000000000 | 00000 |
| 1/2" | 2" | 1/2"-13 | 1 1/2" | 3 1/2" | Not Rated | Not Rated | 1 | 000000000 | 0000 |
| 1/2" | 2" | 1/2"-13 | 2" | 4" | Not Rated | Not Rated | 1 | 000000000 | 0000 |
| 1/2" | 3" | 1/2"-13 | 2" | 5" | Not Rated | Not Rated | 1 | 000000000 | 0000 |
| 1/2" | 3" | 1/2"-13 | 2 1/2" | 6" | Not Rated | Not Rated | 1 | 000000000 | 0000 |
| 1/2" | 3" | 1/2"-13 | 2 1/2" | 8" | Not Rated | Not Rated | 1 | 000000000 | 0000 |
Steel Wood Screw Threaded Studs
These studs are also known as hanger bolts—use them to hang, mount, and fasten parts to wood structures. Install with a stud driver or create wrench flats by threading two nuts onto the stud and jamming them together.
Zinc-plated steel studs resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.