System of Measurement System of Measurement |
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Length Length | Show |
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Length Length | Hide |
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Material Material |
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Finish Finish |
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Tip Type Tip Type |
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 | Pointed |
For Use In For Use In |
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Drive Style Drive Style |
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| Phillips | External Hex | Square |
Threading Threading |
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 | Partially Threaded |
 | Threaded on Both Ends |
Tapping Method Tapping Method |
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| Thread Forming | Thread Cutting |
Flat Head Profile Flat Head Profile |
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 | Standard |
Hardwood Drill Bit Size Hardwood Drill Bit Size |
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Hardwood Drill Bit Size Decimal Equivalent Hardwood Drill Bit SizeDecimal Equivalent |
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Softwood Drill Bit Size Softwood Drill Bit Size |
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About Tapping Screws
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About Threaded Studs and Rods
More
Steel Phillips Flat Head Screws for Wood
These steel screws are zinc plated to resist corrosion in wet environments. All are beveled under the head for use in countersunk holes. 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 the top of the head.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Drive Size | Softwood Drill Bit Size | Hardwood Drill Bit Size | Approximate Threads per Inch | Threading | Min. Thread Lg. | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | |||||||||||
No. 24 | |||||||||||
| 6" | 0.756" | 0.23" | No. 4 | 3/16" | 7/32" | 7 | Partially Threaded | 4" | 5 | 000000000 | 000000 |
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" | |||||||||
| 6" | 0.438" | 0.172" | 10 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 00000 |
5/16" | |||||||||
| 6" | 0.5" | 0.219" | 9 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
3/8" | |||||||||
| 6" | 0.563" | 0.25" | 7 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
1/2" | |||||||||
| 6" | 0.75" | 0.344" | 6 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
5/8" | |||||||||
| 6" | 0.938" | 0.422" | 5 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
3/4" | |||||||||
| 6" | 1.125" | 0.5" | 4.5 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 00000 |
Zinc-Plated Steel | |||||||||
1/4" | |||||||||
| 6" | 0.438" | 0.172" | 10 | Partially Threaded | 4" | ASME B18.2.1 | 25 | 000000000 | 0000 |
5/16" | |||||||||
| 6" | 0.5" | 0.219" | 9 | Partially Threaded | 4" | ASME B18.2.1 | 25 | 000000000 | 00000 |
3/8" | |||||||||
| 6" | 0.563" | 0.25" | 7 | Partially Threaded | 4" | ASME B18.2.1 | 10 | 000000000 | 0000 |
1/2" | |||||||||
| 6" | 0.75" | 0.344" | 6 | Partially Threaded | 4" | ASME B18.2.1 | 10 | 000000000 | 00000 |
3/4" | |||||||||
| 6" | 1.125" | 0.5" | 4.5 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
Hot-Dipped Galvanized Steel | |||||||||
1/4" | |||||||||
| 6" | 0.438" | 0.172" | 10 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 25 | 000000000 | 00000 |
5/16" | |||||||||
| 6" | 0.5" | 0.219" | 9 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 25 | 000000000 | 00000 |
3/8" | |||||||||
| 6" | 0.563" | 0.25" | 7 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 10 | 000000000 | 0000 |
1/2" | |||||||||
| 6" | 0.75" | 0.344" | 6 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 5 | 000000000 | 0000 |
5/8" | |||||||||
| 6" | 0.938" | 0.422" | 5 | Partially Threaded | 4" | ASME B18.2.1, ASTM A307, SAE J429 | 1 | 000000000 | 0000 |
3/4" | |||||||||
| 6" | 1.125" | 0.5" | 4.5 | 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 | |||||||||
1/4" | |||||||||
| 6" | 0.438" | 0.172" | 10 | Partially Threaded | 4" | ASME B18.2.1 | 10 | 000000000 | 00000 |
5/16" | |||||||||
| 6" | 0.5" | 0.219" | 9 | Partially Threaded | 4" | ASME B18.2.1 | 5 | 000000000 | 0000 |
3/8" | |||||||||
| 6" | 0.563" | 0.25" | 7 | Partially Threaded | 4" | ASME B18.2.1 | 5 | 000000000 | 0000 |
3/4" | |||||||||
| 6" | 1.125" | 0.5" | 4.5 | 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 | |||||||||
1/4" | |||||||||
| 6" | 0.438" | 0.172" | 10 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 00000 |
5/16" | |||||||||
| 6" | 0.5" | 0.219" | 9 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
3/8" | |||||||||
| 6" | 0.563" | 0.25" | 7 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 0000 |
5/8" | |||||||||
| 6" | 0.938" | 0.422" | 5 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 00000 |
3/4" | |||||||||
| 6" | 1.125" | 0.5" | 4.5 | Partially Threaded | 4" | ASME B18.2.1 | 1 | 000000000 | 00000 |
Stainless Steel Flanged Hex Head Screws for Wood
These 316 stainless steel screws have excellent resistance to chemicals and salt water 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. Screws may be mildly magnetic. 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. | Pkg. Qty. | Pkg. | |
316 Stainless Steel | |||||||||
3/16" | |||||||||
| 6" | 0.313" | 0.21" | 0.45" | 13 | Partially Threaded | 2.375" | 5 | 000000000 | 000000 |
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 | ||||||||||
3/8" | ||||||||||
| 6" | 0.563" | 0.39" | 0.81" | 7 | Partially Threaded | 3.5" | ASTM A153 | 5 | 000000000 | 00000 |
18-8 Stainless Steel Square-Drive Screws
for Softwood and Plastic-Wood Composites
18-8 stainless steel screws have good chemical resistance and are a good choice for ACQ-treated (arsenic-free) lumber. They have a curved neck that sinks into material, so they sit flush with the surface. Also known as deck screws, they have a Type 17 auger point that penetrates softwood and plastic-wood composite decking material. They may be mildly magnetic. Length is measured from the top of the head.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Drive Size | Drill Bit Size | Approximate Threads per Inch | Threading | Min. Thread Lg. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||||||
No. 12 | ||||||||||
| 6" | 0.43" | 0.203" | No. 3 | 7/64" | 11 | Partially Threaded | 3.96" | 10 | 000000000 | 000000 |
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 | |||||||||
| 1/4" | 3" | 1/4"-20 | 1 1/2" | 6" | Not Rated | Not Rated | 5 | 000000000 | 00000 |
| 3/8" | 3" | 3/8"-16 | 1 1/2" | 6" | Not Rated | Not Rated | 1 | 000000000 | 0000 |
| 5/16" | 3" | 5/16"-18 | 1 1/2" | 6" | Not Rated | Not Rated | 5 | 000000000 | 00000 |
| 1/2" | 3" | 1/2"-13 | 2 1/2" | 6" | 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.
Black-oxide steel studs are mildly corrosion resistant in dry environments.
Zinc-plated steel studs resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.