The SC1550Z103-50 is a pack of 50 M4 x 20mm flat head assembly screws in stainless steel, supplied as replacement hardware for specific 1550Z enclosures. Service technicians and equipment builders use it to replace missing or damaged lid screws without guessing at thread and length.

Hammond's long description spells out exactly where these fit: "M4x20 flat head SS#304 for 1550Z101-103-104-106-109-111-113-115-120-124". The material is listed as stainless steel, grade #304 according to that description. In the Small Case Hardware ordering table the applicable series are shown as 1550Z and 1509Z.

• Screw size: M4 x 20mm, flat head
• Quantity: 50 per pack
• Packaging: plastic clamshell
• Shipping weight: 0.2 lbs (0.09 kg)

Enclosures from Hammond normally include all hardware needed for assembly, so the SC1550Z103-50 is aimed at replacement and spares stock. Because hardware packs may not be compatible with all parts in a listed series, confirm fit using the series landing page or the "Replacement Parts and Accessories" section on your enclosure's part page.

The pack is catalogued as Hardware, type Screws. It is listed as RoHS compliant and REACH compliant, which helps when documenting material compliance for finished equipment.