Products & Services

Protocase manufactures fully finished custom electronic enclosures and associated parts from a wide variety of materials and components, in 2-3 days with no minimum order. Protocase also provides expert and affordable enclosure design services.

Conventional Fasteners


Part Number 98032A425
Description Mil. Spec. Cadmium-Plated Steel Flat Washer, Number 4 Screw Size, MS-27183-4, 0.125" ID
PEM Material
Thread Size
Materials NOT Compatible Stainless Cold-rolled Aluminum
Finish None
Sheet Hole Size
Minimum Sheet Thickness
Minimum Distance from Sheet Edge