For Use In For Use In |
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Threading Threading |
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Minimum Thread Length Minimum Thread Length |
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Screw Features Screw Features |
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| Flanged | Sealing |
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Tapping Method Tapping Method |
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| Thread Forming | Thread Cutting |
REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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Washer Material Washer Material |
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About Tapping Screws
More
18-8 Stainless Steel Thread-Cutting Small-Head
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. Also known as trim-head deck screws, they have a small flat head and slender shank to reduce the risk of splitting. The Type 17 auger point and narrow body penetrate softwood and plastic-wood composite decking material. They cut threads into drilled holes as they’re turned, so they require less driving torque and cause less stress on material than thread-forming screws. Screws 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. 7 | ||||||||||
| 1" | 0.23" | 0.125" | No. 1 | 1/16" | 16 | Partially Threaded | 1/2" | 50 | 000000000 | 000000 |
| 1 5/8" | 0.23" | 0.125" | No. 1 | 1/16" | 16 | Partially Threaded | 13/16" | 50 | 000000000 | 00000 |
| 2" | 0.23" | 0.125" | No. 1 | 1/16" | 16 | Partially Threaded | 1" | 50 | 000000000 | 00000 |
| 2 1/4" | 0.23" | 0.125" | No. 1 | 1/16" | 16 | Partially Threaded | 1 1/8" | 50 | 000000000 | 00000 |
| 2 1/2" | 0.23" | 0.125" | No. 1 | 1/16" | 16 | Partially Threaded | 1 1/4" | 50 | 000000000 | 00000 |
| 3" | 0.23" | 0.125" | No. 1 | 1/16" | 16 | Partially Threaded | 1 1/2" | 25 | 000000000 | 00000 |
No. 9 | ||||||||||
| 4" | 0.25" | 0.125" | No. 2 | 5/64" | 14 | Partially Threaded | 2" | 10 | 000000000 | 00000 |
Super-Corrosion-Resistant 316 Stainless Steel Thread-Cutting
Small-Head Screws for Softwood and Plastic-Wood Composites
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 trim-head deck screws, they have a small flat head and slender shank to reduce the risk of splitting. The Type 17 auger point and narrow body penetrate softwood and plastic-wood composite decking material. They cut threads into drilled holes as they’re turned, so they require less driving torque and cause less stress on material than thread-forming screws. Screws 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. | |
316 Stainless Steel | ||||||||||
No. 7 | ||||||||||
| 1 5/8" | 0.23" | 0.125" | No. 1 | 1/16" | 16 | Partially Threaded | 13/16" | 50 | 000000000 | 00000 |
| 2 1/4" | 0.23" | 0.125" | No. 1 | 1/16" | 16 | Partially Threaded | 1 1/8" | 25 | 000000000 | 0000 |
| 3" | 0.23" | 0.125" | No. 1 | 1/16" | 16 | Partially Threaded | 1 1/2" | 25 | 000000000 | 00000 |
Steel Thread-Cutting Small-Head Screws for Softwood and Plastic-Wood Composites
Because these steel screws cut threads into drilled holes as they’re turned, they require less driving torque and cause less stress on material than thread-forming screws. Also known as trim-head deck screws, they have a small flat head and slender shank to reduce the risk of splitting boards. Their thin head also means they won't stick out of decking, trim, and other finished surfaces. With a corrosion-resistant coating, these screws resist up to 1,500 hours of salt spray. They're green, so they blend in with most treated wood.
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. | Finish Manufacturer Equivalent | Pkg. Qty. | Pkg. | |
Corrosion-Resistant-Coated Steel | |||||||||||
No. 8 | |||||||||||
| 2" | 0.256" | 0.125" | T-15 | 1/8" | 10 | Partially Threaded | 1.4" | ProTech | 50 | 000000000 | 000000 |
| 2 1/2" | 0.256" | 0.125" | T-15 | 1/8" | 10 | Partially Threaded | 1.67" | ProTech | 50 | 000000000 | 00000 |
| 3" | 0.256" | 0.125" | T-15 | 1/8" | 10 | Partially Threaded | 2.07" | ProTech | 25 | 000000000 | 00000 |
| 3 1/2" | 0.256" | 0.125" | T-15 | 1/8" | 10 | Partially Threaded | 2.42" | ProTech | 25 | 000000000 | 00000 |
Thread-Forming Small-Head Screws for Softwood and Plastic-Wood Composites
Thread-forming screws press threads into drilled holes for a tight, vibration-resistant assembly. Also known as trim-head deck screws, they have a small flat head and slender shank to reduce the risk of splitting. The sharp point and narrow body penetrates softwood and plastic-wood composite decking material. Made from steel, they have a black-phosphate finish to resist corrosion in wet environments. 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. | |
Black-Phosphate Steel | ||||||||||
No. 6 | ||||||||||
| 1 5/8" | 0.224" | 0.135" | No. 1 | 1/16" | 18 | Partially Threaded | 13/16" | 100 | 000000000 | 000000 |
| 2 1/4" | 0.224" | 0.135" | No. 1 | 1/16" | 18 | Partially Threaded | 1 1/8" | 100 | 000000000 | 00000 |
No. 8 | ||||||||||
| 3" | 0.264" | 0.155" | No. 2 | 5/64" | 15 | Partially Threaded | 1 1/2" | 50 | 000000000 | 00000 |
Sealing Screws for Softwood and Plastic-Wood Composites
The neoprene-backed washer seals out contaminants. Also known as trim-head deck screws, they have a small flat head and slender shank to reduce the risk of splitting. They have a Type 17 auger point to penetrate softwood and plastic-wood composite decking material. Made from 18-8 stainless steel, they have good chemical resistance and are a good choice for ACQ-treated (arsenic-free) lumber. Screws 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 | Washer | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | OD | Thick. | Drive Size | Drill Bit Size | Approximate Threads per Inch | Threading | Min. Thread Lg. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||||||||
No. 7 | ||||||||||||
| 1" | 0.23" | 0.125" | 0.63" | 0.2" | No. 1 | 1/16" | 16 | Partially Threaded | 7/8" | 25 | 000000000 | 000000 |
| 1 5/8" | 0.23" | 0.125" | 0.63" | 0.2" | No. 1 | 1/16" | 16 | Partially Threaded | 1 1/8" | 25 | 000000000 | 00000 |
| 2 1/4" | 0.23" | 0.125" | 0.63" | 0.2" | No. 1 | 1/16" | 16 | Partially Threaded | 1 1/4" | 10 | 000000000 | 00000 |
| 3" | 0.23" | 0.125" | 0.63" | 0.2" | No. 1 | 1/16" | 16 | Partially Threaded | 2" | 10 | 000000000 | 00000 |
Distortion-Free Screws for Plastic-Wood Composites
Threads change direction to cut into composites and push material back into the hole to prevent distorting the surface around the hole. Also known as trim-head deck screws, these have a small flat head and slender shank to reduce the risk of splitting. They have a Type 17 auger point to penetrate softwood and plastic-wood composite decking material. A Torx drive allows you to apply extra force with less slippage or damage to the recess. Made from 18-8 stainless steel, they have good chemical resistance and are a good choice for ACQ-treated (arsenic-free) lumber. 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.
Flanged Rounded Head Screws for Wood
With a low-profile rounded head that’s flanged to sit flush for a finished appearance, these screws press threads into wood on cabinets, trim, molding, and light duty framing. Because they’re flanged, they distribute pressure across a wide surface, creating a tight hold and eliminating the need for a washer. The Torx drive has more points of contact than Phillips, slotted, and square drives, so you can apply extra force without worrying about slipping or stripping. These screws have a zinc plating to resist corrosion in wet environments. To prevent splitting, drill a pilot hole slightly smaller than the screw. Length is measured from under the flange.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Length | Diameter | Height | Flange Thickness | Drive Size | Approximate Threads per Inch | Threading | Minimum Thread Length | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||||||
No. 8 | ||||||||||
| 1" | 0.43" | 0.09" | 0.05" | T15 | 15 | Fully Threaded | 1" | 100 | 000000000 | 000000 |
| 1 1/4" | 0.43" | 0.09" | 0.05" | T15 | 15 | Partially Threaded | 0.984" | 100 | 000000000 | 00000 |
| 1 1/2" | 0.43" | 0.09" | 0.05" | T15 | 15 | Partially Threaded | 1" | 100 | 000000000 | 00000 |
| 1 3/4" | 0.43" | 0.09" | 0.05" | T15 | 15 | Partially Threaded | 1.181" | 100 | 000000000 | 00000 |
| 2" | 0.43" | 0.09" | 0.05" | T15 | 15 | Partially Threaded | 1.299" | 100 | 000000000 | 00000 |
| 2 1/2" | 0.43" | 0.09" | 0.05" | T15 | 15 | Partially Threaded | 1.575" | 100 | 000000000 | 00000 |
| 2 3/4" | 0.43" | 0.09" | 0.05" | T15 | 15 | Partially Threaded | 1.811" | 100 | 000000000 | 00000 |
| 3 1/8" | 0.43" | 0.09" | 0.05" | T15 | 15 | Partially Threaded | 2.087" | 100 | 000000000 | 00000 |