Made from 18-8 stainless steel, these metric button head screws have good chemical resistance and may be mildly magnetic. The tamper-resistant Torx drive (also known as a pin-in Torx drive) makes them difficult to remove without special tools.

To prevent unwanted removal, these screws have a tamper-resistant Torx drive—also known as a pin-in Torx drive—that makes them difficult to unscrew without special tools. An O-ring under the head blocks leaks and seals out dust and dirt.

Nearly twice as strong as stainless steel button head screws, these metric screws are made from alloy steel. Their tamper-resistant Torx drive (also known as a pin-in Torx drive) makes them difficult to remove without special tools.

These metric screws have a drilled spanner drive, making them difficult to remove without special tools. Made from 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic.

These 18-8 stainless steel button head screws have good chemical resistance and may be mildly magnetic. The tamper-resistant hex drive (also known as a pin-in hex drive) makes them difficult to remove without special tools.

Made from alloy steel, these screws are nearly twice as strong as stainless steel button head screws.

A zinc plating provides mild corrosion resistance.

These button head screws have a unique drive that is sold only by McMaster-Carr, making them difficult to remove without a special driver bit. Made from 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic.

Also known as pin-in-hex, install and remove these screws with a tamper-resistant hex driver.

Install and remove these screws with a tamper-resistant spanner driver.

Also known as pin-in-hex, install and remove these screws with a tamper-resistant hex driver.

The S-shaped drive can be installed with a standard slotted driver, but requires a special tool for removal.

A tamper-resistant Torx driver is required for installation and removal. Also known as pin-in-Torx, these screws allow you to apply extra force with less slippage or damage to the recess.

With a tamper-resistant Torx drive (also known as a pin-in Torx drive), these metric screws are difficult to remove without special tools.

With an O-ring under the head, these metric screws seal out leaks and contaminants while also preventing unwanted removal.

These metric screws have a tamper-resistant drilled spanner drive, making them difficult to remove without special tools.

With a tamper-resistant hex drive (also known as a pin-in hex drive), these metric screws are difficult to remove without special tools.

Install these binding barrels and screws with a standard slotted screwdriver. They require a special tool to remove.