The 1550MS50TBK is the black version of the 1550 series tamper-proof screw pack. The manufacturer's hardware list describes it as M3.5 x 12mm tamper-proof screws, black, 50 per pack, for the 1550 series; the part page short description is "1550 Tamper Proof Screw 50 PK" and its type is listed as tamper resistant screws.

These screws suit 1550 enclosure installations where casual opening should be discouraged and where a black fastener better matches the finished look. Typical buyers are OEM builders, integrators and facilities teams securing enclosures that sit in accessible or unattended places.

• Quantity: 50 per pack (per the hardware list and short description)
• Screw: M3.5 x 12mm, tamper-proof, black
• Type: assembly screws
• Packaging: bag

Note that the part page's long description reads "1550 series tamper resistant screws, black stainless steel, 100-pack", while the hardware list and short description both give 50 per pack. The listed material is steel.

Enclosures typically include all hardware needed for assembly, so this pack is a replacement or upgrade. The manufacturer cautions that hardware packs may not be compatible with all parts in the listed series and recommends checking the enclosure's "Replacement Parts and Accessories" section.

The 1550MS50TBK is categorised as hardware, weighs 0.11 lbs (0.05 kg) for shipping, and is RoHS and REACH compliant. The non-black equivalent is 1550MS50T.