| PartNumber | AT4031FF | AT4031EE | AT4031CC |
| Description | Switch Bezels / Switch Caps .291" SQ GRN CAP | Switch Bezels / Switch Caps .291" SQ YLW CAP | Switch Bezels / Switch Caps .291" SQ RED CAP |
| Manufacturer | NKK Switches | NKK Switches | NKK Switches |
| Product Category | Switch Bezels / Switch Caps | Switch Bezels / Switch Caps | Switch Bezels / Switch Caps |
| RoHS | Y | Y | Y |
| Product | Caps | Caps | Caps |
| Type | Button | Button | Button |
| For Use With | Pushbutton Switches, Miniature | Pushbutton Switches, Miniature | Pushbutton Switches, Miniature |
| Designed for | HB Series | HB Series | HB Series |
| Height | 4.5 mm | 4.5 mm | 4.5 mm |
| Length | 7.4 mm | 7.4 mm | 7.4 mm |
| Material | Polycarbonate (PC) | Polycarbonate (PC) | Polycarbonate (PC) |
| Series | M | M | M |
| Termination Style | Snap On | Snap On | Snap On |
| Brand | NKK Switches | NKK Switches | NKK Switches |
| Product Type | Switch Bezels / Switch Caps | Switch Bezels / Switch Caps | Switch Bezels / Switch Caps |
| Subcategory | Switch Accessories | Switch Accessories | Switch Accessories |
| Part # Aliases | AT-4031-M | AT-4031-Y | AT-4031-R |
| Factory Pack Quantity | - | 200 | - |