Fisher Space Pen Bullet Cerakote Tungsten Ballpoint Pen—Durability Born in Space

The Fisher Space Pen Bullet Series 400 is the brand's first and most popular model. It is designed to work where ordinary pens fail.

The body is made of brass and steel, coated with Cerakote—a thin-film ceramic coating that offers high resistance to wear, corrosion, and chemicals. The same coating is used in the automotive and aerospace industries, as well as to protect firearms and knives.

Technical Specifications of the Fisher Space Pen 400H-237

Specifications	Value
Brand	Fisher Space Pen
Model	400H-237 Bullet Cerakote Tungsten
Category	A Gift for a Man
Coverage	Cerakote Ceramic Coating
Housing Material	Brass and Steel
Magazine Nozzle	Tungsten carbide ball
Length when unfolded	13.6 cm
Length when folded	9.6 cm
Magazine	SPR4 – black ink, medium thickness
Compatibility with Refills	All Fisher PR Fillers
Operating temperature	from -34°C to +120°C
Warranty	Lifetime Warranty Against Manufacturing Defects
Contents of the Set	Pen and plastic gift box

Why is the Fisher Space Pen different from the rest?

Every Fisher Space Pen is precision-assembled and hand-tested. The ink is thixotropic—it is solid under normal conditions and liquefies only when writing. This ensures that the pen does not leak or skip.

It writes underwater and in zero gravity
It writes at any angle
It lasts up to three times longer than standard ink
The magazine contains a pressurized nitrogen cartridge
Winter doesn't freeze, summer doesn't melt away

Its small size makes it easy to carry—in a wallet, organizer, or bag. The clip allows you to attach it to a pocket or backpack.

The Story Behind the Space Pen

During NASA’s early missions, astronauts used pencils. Paul S. Fisher of Fisher Pen Co. developed a pressurized ballpoint pen entirely with private funds—about 1 million U.S. dollars. In 1967, after rigorous testing, NASA equipped the astronauts on the Apollo mission with these pens.

The media reports that Fisher purchased about 400 ballpoint pens at a price of $6 each. In February 1969, the Soviet Union also purchased 100 pens and 1,000 refills for the Soyuz spaceflights. To this day, American astronauts and Russian cosmonauts use the Fisher Space Pen.

A gift for a man who values quality

The Fisher Space Pen Bullet is a practical and prestigious gift. It is suitable for doctors, lawyers, military personnel, police officers, business leaders, teachers, craftsmen, and high school seniors.

Lifetime warranty against manufacturing defects
Reliable in extreme conditions
Compact and lightweight for everyday wear
Perfect for your car, backpack, or work organizer

It comes in a gift box—ready to give without any additional wrapping. 🎁

Frequently Asked Questions

What is the Cerakote coating on the Fisher Space Pen Bullet Tungsten?

Cerakote is a thin-film ceramic coating with high resistance to wear, corrosion, and chemicals. It is used in the automotive and aerospace industries, as well as for coating firearms and knives. Applying it to the Fisher Space Pen Bullet Tungsten makes it exceptionally durable for everyday use and in harsh conditions. The coating not only protects the barrel but also gives it a distinctive matte finish.

At what temperatures does the Fisher Space Pen work?

The Fisher Space Pen works reliably at temperatures ranging from -34°C to +120°C. This means it won’t freeze in the cold or melt in the heat. It’s suitable for outdoor use—in the woods, on a hunting or hiking trip, in a car, or on a construction site. The ink is thixotropic and liquefies only when writing, which further ensures the pen’s reliability in various temperature conditions.

Can the Fisher Space Pen write underwater and in zero gravity?

Yes, the Fisher Space Pen is designed to write underwater, in zero gravity, and at any angle. The pen contains a pressurized nitrogen cartridge that forces the ink toward the tip regardless of gravity. It is precisely this technology that made it the choice of NASA for the Apollo missions and of the Soviet Union for the Soyuz spaceflights. You can count on it in any situation.

What types of refills are compatible with the Fisher Space Pen 400H-237?

The Fisher Space Pen 400H-237 comes with an SPR4 refill—black ink with a medium line width. It is compatible with all Fisher PR refills. Fisher refills last up to three times longer than standard ink, and the tip is made of tungsten carbide for maximum durability.

What warranty is provided for the Fisher Space Pen?

Every Fisher Space Pen is precision-assembled, hand-tested, and comes with a lifetime warranty against manufacturing defects. This is a testament to the product’s quality and reliability. The warranty covers the pen’s body and mechanism under normal use, excluding intentional damage.

Is the Fisher Space Pen Bullet a good gift for a man?

The Fisher Space Pen Bullet is an excellent gift choice for men in various professions and with diverse interests. It’s perfect for doctors, lawyers, military personnel, police officers, business leaders, teachers, craftsmen, and high school seniors. The pen comes in a plastic gift box, ready to give. It is practical, durable, and has a rich history, making it an interesting conversation starter. At Dulotec.COM, you’ll find this pen at a competitive price with fast shipping.

What is the history of the Fisher Space Pen, and how is it connected to NASA?

Paul S. Fisher of Fisher Pen Co. developed the space pen without funding from NASA; the company invested approximately 1 million U.S. dollars from its own funds. In 1967, after rigorous testing, NASA equipped the Apollo mission astronauts with these pens. The media reported that approximately 400 pens were purchased from Fisher at a price of $6 each. In February 1969, the Soviet Union also purchased 100 pens and 1,000 refills for the Soyuz spaceflights. To this day, American astronauts and Russian cosmonauts use the Fisher Space Pen during their missions.