About Rounded Head Screws
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Stainless Steel Tamper-Resistant One-Way Round Head Screws
Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. They’re passivated for added protection against oxidation and corrosion. The S-shaped drive can be installed with a standard slotted driver, but requires a special tool for removal (sold separately). For removal tools, see one-way bits and drivers. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
| Lg. | Threading | Head Dia. | Head Ht. | Tensile Strength, psi  | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
10-32 | ||||||||
| 1/4" | Fully Threaded | 0.359" | 0.137" | 80,000 | __ | 50 | 000000000 | 000000 |
| 3/8" | Fully Threaded | 0.359" | 0.137" | 80,000 | __ | 50 | 000000000 | 00000 |
| 1/2" | Fully Threaded | 0.359" | 0.137" | 80,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
| 5/8" | Fully Threaded | 0.359" | 0.137" | 80,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | 0.359" | 0.137" | 80,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
| 1" | Fully Threaded | 0.359" | 0.137" | 80,000 | ASME B18.6.3 | 50 | 000000000 | 00000 |
| 1 1/4" | Fully Threaded | 0.359" | 0.137" | 80,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | 0.359" | 0.137" | 80,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |