






🖤 Write Boldly, Anywhere, Anytime.
The Fisher Space Pen SM4B is a military-grade, matte black ballpoint pen engineered to write smoothly at any angle, including upside down, and in extreme environments ranging from -30°F to 250°F. Featuring a durable brass body with a non-reflective finish and single-hand snap cap, it’s trusted by astronauts and professionals worldwide for reliable performance in the toughest conditions.




| Manufacturer | Fisher Space Pen |
| Brand | Fisher Space Pen |
| Model number | SM4B |
| Product Dimensions | 13.34 x 1.27 x 1.27 cm; 0.28 g |
| Color | Matte Black |
| Closure | Snap |
| Grade | 0.5 |
| Grip Type | Ergonomic grip |
| Pencil Lead Degree (Hardness) | B |
| Material Type | Brass |
| Number of Items | 1 |
| Size | 1 Count (Pack of 1) |
| Point Type | Medium |
| Line Size | 0.5mm |
| Ink Color | Black |
| Tip Type | Tungsten Carbide Ball |
| Manufacturer Part Number | SM4B |
| Item Weight | 0.28 g |
Trustpilot
1 day ago
1 month ago