System of Measurement System of Measurement |
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Head Type Head Type |
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 | Flat |
For Use In For Use In |
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Material Material |
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Tip Type Tip Type |
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 | Pointed |
Drive Style Drive Style |
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 | |
Tapping Screw Type Tapping Screw Type |
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 | 17 |
Tapping Method Tapping Method |
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 | Thread Cutting |
Threading Threading |
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 | Partially Threaded |
Flat Head Profile Flat Head Profile |
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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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About Tapping Screws
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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 | ||||||||||
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| 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 |