The 1551USB50 is a 50-pack of #2 x 1/2" self-tapping assembly screws. The part page describes it as replacement screws, #2 x 1/2" FH-B, 50-pack, with the short description "USB Screws #2X1/2 In FH-B". In the manufacturer's hardware list it is assigned to the 1551MINI and 1551USB series.

These are the assembly screws that hold the 1551MINI and 1551USB enclosures together, so the pack is aimed at product developers, OEM assemblers and service technicians who build or maintain devices housed in these enclosures and need replacements for lost or worn screws.

• Quantity: 50 per pack
• Screw: #2 x 1/2" self-tapping, FH-B
• Type: assembly screws
• Applicable series: 1551MINI, 1551USB

The manufacturer notes that enclosures in most cases include all the hardware needed for assembly, so this pack is a replacement item. Because hardware packs may not be compatible with all parts in the listed series, check the series landing page or the "Replacement Parts and Accessories" section of your enclosure's part page before ordering.

The 1551USB50 lists steel as its material and is classed as hardware, type screws. It ships in a bag at 0.06 lbs (0.03 kg) and is RoHS and REACH compliant. A black version, 1551USB50BK, is also listed in the hardware reference.