🚀 Write like a space explorer, perform like a pro.
The FisherSpace Pen Military Cap-O-Matic is a durable, matte black ballpoint pen featuring a tungsten carbide tip and black ink that writes smoothly at any angle—even upside down. Engineered to function in extreme temperatures from -30°F to 250°F, it’s trusted by astronauts and professionals alike for reliable performance in harsh environments. Its single-hand snap closure and sleek brass body combine practicality with tactical style.
Manufacturer | Fisher Space Pen |
Brand | Fisher |
Item Weight | 0.01 ounces |
Product Dimensions | 5.25 x 0.5 x 0.5 inches |
Item model number | SM4B |
Is Discontinued By Manufacturer | No |
Color | Matte Black |
Closure | Snap |
Grade | 0.5 |
Grip Type | plastic plain grip |
Pencil Lead Degree (Hardness) | B |
Material Type | Multi |
Number of Items | 1 |
Size | 1 Count (Pack of 1) |
Point Type | Medium |
Line Size | 1.1 Millimeters |
Ink Color | Black |
Tip Type | Tungsten Carbide Ball |
Manufacturer Part Number | SM4B |
R**P
High quality low cost makes this pen a WIN!
I have been using these pens for over 20+ years now. I have constantly and consistently relied upon these pens, and they have not failed me yet. I highly recommend these pens and here is why:Short Review:High quality, low cost makes these pens: worthy! I have brought these pens along with me through battlefield conditions. Rain, sleet, snow, mud... (These pens were designed for the rigours of space - so they scoff at Earth conditions). I have been able to write with them throughout my service and after. They are reliable pens. I buy these pens without hesitation when prices drop below $10 bucks (you should too). They pretty much keep forever, and are awesome gifts. They are brass metal underneath with a thick paint coat over it. The most I've had to do (and I don't abuse my things on purpose) is touch up the tip where the pen comes out. I've dropped it, stepped on it, left if lying around in harsh weather, boxed it up for years and forgotten about it, bought more of these exact same pens, lost them, found them... You name it. Each time, these pens have come out WRITING. They are so reliable, that I would actually be SURPRISED if they did not work due to anything OTHER than running out of ink. I wanted a pen without a detachable cap (just seemed like another thing to lose), and this model fits the bill perfectly. So, if you want a good reliable pen that won't break the bank or your heart if you ever were to lose it, get this one.Long Review:The first time I ever actively handled these pens was during basic training for the military. I knew of them before that. Just never felt that I needed anything more than a .10 cent Bic or Papermate pen, and I bought those in boxfuls. At the time, I did not have time to worry about "quality" or "consistency" - they had a lot of print on their packaging saying how they were "space pens," "high quality." All that jazz. The only thing that mattered was whether or not it would work in the field. Internet was not readily available to share information or do research (yeah, I'm old). During those days, people just had to trust what was written on the packaging 99% of the time and if it didn't work... too bad, so sad. You just avoid that brand in the future while telling all your buddies to avoid it too. Sure, it lent to having something to talk about with your friends during down time, but there were many lost pennies, and inefficient purchasing habits too.So, for anyone who was in the military (and I'm not sure if they changed these rules or not) we were not allowed to have the average Bic pens because they had these white plastic pen tubes at the time (Papermate pens were blue - also a no-no). Almost all items going into the field could not be reflective or shiny, and certainly not rainbow colored. There were certain exceptions (no idea why I was allowed to carry these) and they were: the Leatherman multitool (Tim Leatherman had just released his original tool without the locking blades, and it was still shiny stainless steel - nothing was tactically painted or blacked out), and the bright red swiss army knives (there were not many color variations in the swiss army knife scales back then either). I only know because I brought both into the field - go figure. Its the military. What can I say? Anyway, to be certain that your other items met field-worthiness, their colors had to be muffled. We had a couple of soldiers just wrap a piece of "100 mph" field tape around a bic. For some reason, I didn't - though I'm kind of glad today that I didn't. Countless soldiers have lost their gear crawling around in the field - especially pens and whatnot... So... of course, I bought this pen in black.It was like a $5 dollar pen back then (expensive by those standards) and I didn't want to lose it. Whenever the pen got scuffed up to the brass, we had to get a black sharpie marker and just "paint" over it again. Miraculously, this pen never got lost and stayed with me (through basic training and everything!). I still have it to this day - and it continues to write flawlessly.Strangely, I have never changed out its original ink fill. I credit that to not writing exclusively with this pen, but still... after 20+ years... it still writes!I discovered a couple of things because of this. This ink... it doesn't dry up like other "normal" inks. It just keeps on lasting. I have found new boxes of Bic pens with less time in the stockrooms which no longer wrote ("guaranteed to write every time!" - nope.). Those pitiful dried up husks of former greatness... money in the garbage. That meaningless scribble printed on their boxes... It would cost you more money to get them to execute on their guarantees and warranties than to just buy another box. I've had pens from China that dry up in less time and even fade after they touch paper for a year. Not this ink. I've only had ONE other brand of pen that still wrote after 15+ years of being forgotten somewhere in a bag and that pen cost around $250! But that pen cannot write underwater, upside down... etc. etc. etc.This pen is a beast. It still functions. It writes in water, upside down and in a huge range of temperatures. For the adventurers out there (jumping out of airplanes every moment you get, or climbing mountains all the time... you know who you are), you don't have to worry about it popping under different air pressures or temperatures. You don't have to worry about landing in a pond or a lake. Go ahead and place your notepad on the wall to write if no tables are nearby. This pen will function. Want to give your phone number to that girl you met at that greasy chinese take-out place, and all you had in your pocket was this pen (yeah, no phone... but you're giving her your phone number... and... it's MY review! Go write your own review!) and that greasy napkin you just used to wipe your mouth with? No problem! This pen writes on greasy napkins like a champ! As for my pen? Sure, the spring is a little dated. It is not as "clicky" as the first day. But it's also over 20 years old!Can't question that kind of quality.If pens are disposable for you, keep buying those Bics and Papermates. Those are great pens! If you tend to regularly use one pen, or need a pen to handle certain conditions without fail because you're always on the go, get this one! I've unintentionally tested one, and it PASSED!Remember to get the fisher space pen refills, because that is what really gives these pens "super powers." Also, if you are going to operate in adverse weather conditions, you'll want one of those weather resistant notebooks to match.I buy these items with my own pennies. If my review helped you at all, or you just got a tiny chuckle, share the love! Click on that thumbs up icon!Thanks for reading!
L**T
Love these pens. Literally works anywhere!
Pressurized Space Pen writes anywhere every time. Only pen I know of which can be left in the car all year round and still work when you need it. Heat/cold no effect on a pen used in space!
S**N
GOOD, SO FAR
The pen looks fine, and works well, initially.I bought it to use on a wall calendar, so I didn't have to take down the whole calendar to write on, as conventional pens wouldn't write long at a vertical angle.I've read here these aren't built very well, and have a tendency to fall apart, eventually, but think this one will be fine, as it will have very light duty, and never be moved around.
C**R
Great pen with one big flaw
I bought this pen when I started the fire academy because I wanted a solid pen that could hold up to the abuse and perform well. It definitely held up well. I actually used it for two years with no issues in performance or durability. Unfortunately it has one major flaw that has made it unusable for me. I store my pens clipped to my pants pocket and from day one I had issues with the pen unscrewing itself in my pocket. Just yesterday I reached in to my pocket to find only the lower portion of the pen. It had completely unscrewed it's self and the top portion had fallen out of my pocket and was lost. For two years I managed to catch it before parts were lost but unfortunately this time I was too late. For most people this will not be an issue but for those who store their pens in their pocket and move a lot through out the work day look else where. I ordered the fisher zero gravity pen as a replacement. Hopefully it will not have the same issue.
D**.
Pens that wont let you down in extreme heat , freezing cold or a rainy day.
I have used these space pens since 1992 . I am now a retired police officer . In the late 70's and the 1980's it would get me mad to have a pen stop writing at an accident or a crime scene in the winter during frigid weather . I would have to stop and go back to the car and get another pen that was warm . When I noticed these type of pens in a catalogue in the early 1990's I bought them and never worried again during the freezing weather when outside writing down information . The ink never stops flowing and the pens are comfortable to grip. Now I leave one in my glovebox during winter and know that they will write if needed even in blistering summer heat they can be counted on to perform .
C**R
Fisher Space Pen
Does everything it advertised!!
C**O
Nice pen, defective barrel and cap finish
Update: 3/2/2025: Returned pen for replacement which performs flawlessly and is excellent. As others have noted the click mechanism can be a little soft, however, adding a 1/2 spring from a cheap click pen firms up the clicker considerably.Nice pen. Good form factor. Clicker a little soft as noted by others.Cartridge writes very smoothly. Unfortunately pen barrel and cap exterior finish was defective with some sort of gunk that could not be removed without seemingly permanently damaging the finish. Had to return it.
S**Y
Absolutely love this pen
It writes spectacularly smooth and easy and reliably. I tried owning the compact bullet space, pens but they were so easy to lose. This larger one is much easier to avoid that happening, and I love the slim profile of it. It feels high-tech and it just makes me feel kind of professional and a little like 007 when I’m doing even the simplest journaling.
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