These 18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. Screws are passivated for added protection against oxidation and corrosion. Torx and Torx-Plus drives have more points of contact than other drives, allowing you to tighten the screw without damaging the recess. For Torx tools, see Torx and Torx-Plus bits, keys, and drivers . Screws are angled under the head to sit flush within countersunk holes. Length is measured from the top of the head.

For technical drawings and 3-D models, click on a part number.

These screws have a triangular shank that presses tightly as it forms threads, so screws resist loosening in soft metals such as brass, aluminum, and copper. They’re also known as Taptite® screws. Made from steel, they're zinc-plated steel to resist corrosion in wet environments. Length is measured from under the head.

Screws with a Torx-Plus drive allow you to apply extra force with less slippage or damage to the recess.

For technical drawings and 3-D models, click on a part number.

These steel screws have a black-oxide or zinc-plated finish to resist corrosion. A Torx or Torx Plus drive provides more points of contact than a Phillips drive, allowing you to apply extra force with less slippage or damage to the recess. Comparable to Plastite screws, these screws have a triangular shank that presses tightly against formable plastic such as polypropylene to resist loosening. They may have a slightly different diameter than standard screws. Length is measured from under the head.

Zinc-plated steel screws won’t rust in wet environments.

For technical drawings and 3-D models, click on a part number.

18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. They are beveled under the head for use in countersunk holes. Length is measured from the top of the head.

Metric-size screws are comparable to PT screws. They have a round shank that evenly distributes contact between the screw and plastic, as well as a recess between each thread that allows extra material to pass through. This means they grip tightly to plastic and require little driving torque to install, reducing the risk of cracking your material. These screws have more sharply angled threads than inch-size screws, so they resist loosening and backing out from vibration, even while supporting heavy loads. They also need more force to pull out. You can reuse them.

Screws with a Torx or Torx Plus drive allow you to apply extra force with less slippage or damage to the recess.

For technical drawings and 3-D models, click on a part number.

These steel screws are beveled under the head for use in countersunk holes. Length is measured from the top of the head.

Metric-size screws are comparable to PT screws. All have a round shank and more sharply angled threads than those with a tri-lobe shank, so they require less driving torque and reduce the risk of cracking mating plastic. They also have a recessed thread root that creates a tight hold. You can reuse them.

Zinc-plated steel screws resist corrosion in wet environments.

For technical drawings and 3-D models, click on a part number.