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About Rounded Head Screws
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Metric 18-8 Stainless Steel Button Head Torx Screws


18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. All are passivated for added protection against oxidation and corrosion. A Torx drive has more points of contact than other drives, allowing you to tighten the screw without damaging the recess. For Torx tools, see Torx bits, keys, and drivers. Length is measured from under the head.
Lg., mm | Threading | Head Dia., mm | Head Ht., mm | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||
---|---|---|---|---|---|---|---|---|---|
M4.5 × 0.75 mm | |||||||||
8 | Fully Threaded | 8.54 | 2.20 | T20 | 100,000 | ASME B18.3.4M | 50 | 000000000 | 000000 |
10 | Fully Threaded | 8.54 | 2.20 | T20 | 100,000 | ASME B18.3.4M | 50 | 000000000 | 00000 |
12 | Fully Threaded | 8.54 | 2.20 | T20 | 100,000 | ASME B18.3.4M | 50 | 000000000 | 00000 |
Parallel Handscrew Clamps

The matching jaws are ground flat for a firm grip and even pressure when clamping smooth surfaces. The two screws turn independently to make small, individual adjustments to each jaw.
Opening | |||||||
---|---|---|---|---|---|---|---|
Max. | Min. | Reach | Holding Capacity | Arm Material | Thumb Screw Hole Dia. | Each | |
1 1/4" | 0" | 3/4" | Not Rated | Steel | 1/8" | 0000000 | 000000 |