When you're putting together a reliable way to house small devices, look to this enclosure accessory from Hammond. It's a pack of screws that's designed to help you secure small enclosures housing circuit boards or devices with USB connections such as dongles. This makes it a great shout for pairing with products from Hammond's 1551 series. As the screws are self-tapping with a threaded form, they bore effectively into your chosen material. That means there's no need for pre-drilling, which saves you time.

• Made from steel, so they're hardwearing and impact-resistant
• Plating helps prevent corrosion to support a long service life in moist environments
• Pack of 50, so you get plenty to see you through several installations

• Schools and universities
• Robotics systems
• Factory production lines

These screws are intended for use with the 1551USB50 and 1551USB50BK mini USB enclosures from Hammond's 1551 Series. When you use these self-tapping screws to seal the enclosure, your finished assembly has an IP54 rating, which means it partially protects against dust and resists splashes of water from all directions.