Fisher Space Pen Matte Black Bullet ballpoint pen with clip, model 400BCL, in a gift box

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Fisher Space Pen 400BCL – a pen designed for space and everyday use

The Fisher Space Pen model 400BCL is a pen with a matt black barrel and a square-tipped cap. The design combines a modern look with the classic style of the Bullet range.

Each pen is precision-assembled and hand-tested. It comes with a lifetime guarantee against manufacturing defects.

Technical specifications of the Fisher Space Pen 400BCL

Length when extended: 13.3 cm
Length when retracted: 9.5 cm
Barrel: matt black, brass and steel
Refill: black PR-4, medium line width
Compatible refills: SPR Cartridge series
Tip: tungsten carbide ball

Why the Fisher Space Pen writes where others fail

The cartridge contains a pressurised nitrogen gas cartridge. A small metal cylinder pushes the special ink, which is hermetically sealed.

The ink is thixotropic – it is solid in its normal state and only liquefies when writing. It does not skip or leak. It writes up to three times longer than ordinary ink.

Reliability in all conditions

The pen performs reliably under:

Extreme temperatures: from -34°C to +120°C
Writing underwater
Zero gravity
Any writing angle

Its compact size makes it easy to store in a wallet or organiser. The clip allows it to be attached to a pocket or rucksack.

The perfect pen to give as a gift to a man

The Fisher Space Pen 400BCL is a suitable gift for men and women in a variety of professions. Practical, durable and with a history that makes an impression.

Suitable for: teachers, doctors, lawyers, politicians, military personnel, police officers, business leaders and school leavers. It’s also great as an everyday pen to keep in the car or handbag – it doesn’t freeze in winter or leak in summer.

The pen is also ideal for camping, climbing, hiking, skiing, cycling, fishing, snowboarding, hunting, kayaking and diving.

The history of the Fisher Space Pen – from NASA to everyday life

During the early NASA missions, astronauts used pencils. For the Gemini project in 1965, NASA purchased 34 mechanical pencils at a total cost of $4,382.50 – around $128.89 each. This caused public outcry.

Paul S. Fisher of Fisher Pen Co. developed a ballpoint pen suitable for the space environment without funding from NASA. The company invested around $1 million of its own funds. The product was patented and launched on the market.

In 1967, following rigorous testing, NASA equipped the Apollo astronauts with these pens. Around 400 were purchased at a price of $6 each. In February 1969, the Soviet Union also purchased 100 pens and 1,000 refills for the Soyuz missions. To this day, both American astronauts and Russian cosmonauts use the Fisher Space Pen.

Specifications	Value
Brand	Fisher Space Pen
Model	400BCL
Series	Bullet
Body colour	Matt black
Case material	Brass and steel
Magazine mouthpiece	Tungsten carbide tip
Length when extended	13.3 cm
Length when folded	9.5 cm
Blade	Black PR-4, medium thickness
Compatible refills	Cardridge SPR series
Operating temperature	-34°C to +120°C
Ink type	Thixotropic, pressurised with a nitrogen cartridge
Warranty	Lifetime warranty against manufacturing defects

Frequently asked questions

What is thixotropic ink and why is it important?

The thixotropic ink in the Fisher Space Pen is a special formula that is solid in its normal state. When writing – that is, when subjected to mechanical pressure – it liquefies and flows evenly onto the paper. This means that the pen does not leak or skip, even when writing at an angle, underwater or in zero gravity. The ink is hermetically sealed within the cartridge and pressurised by a nitrogen gas cartridge. It is precisely this technology that allows the Fisher Space Pen to write up to three times longer than standard pens.

At what temperatures does the Fisher Space Pen 400BCL operate?

The Fisher Space Pen 400BCL is designed to operate reliably at temperatures ranging from -34°C to +120°C. This makes it suitable for use in extreme conditions – mountainous environments, extreme cold or heat. Unlike ordinary pens, it does not freeze in winter or leak in summer. That is why it is favoured not only by astronauts, but also by people involved in hiking, hunting, fishing or kayaking.

What guarantee does the Fisher Space Pen offer?

Every Fisher Space Pen is precision-assembled and hand-tested. The manufacturer offers a lifetime guarantee against all manufacturing defects. This is a sign of confidence in the product’s quality and makes the pen an excellent long-term choice – both for personal use and as a gift.

Is the Fisher Space Pen 400BCL suitable as a gift?

The Fisher Space Pen 400BCL is an excellent gift choice for men and women in a variety of professions. It is suitable for teachers, doctors, lawyers, politicians, military personnel, police officers, business leaders and school leavers. The pen comes in a gift box and combines practicality with history and technology that makes a lasting impression. The matt black barrel gives it an elegant and understated look, suitable for any occasion.

Which refills are compatible with the Fisher Space Pen 400BCL?

The Fisher Space Pen 400BCL comes with a black PR-4 refill with a medium line width. Replacement refills from the SPR Cartridge series, available from the manufacturer, are suitable. The refills use special pressurised thixotropic ink, which guarantees reliable writing in all conditions.

How is the Fisher Space Pen linked to NASA’s space programmes?

During the early NASA missions, astronauts used pencils, which proved to be an expensive and inconvenient solution. Paul S. Fisher of Fisher Pen Co. developed a pressurised ballpoint pen without funding from NASA – the company invested around $1 million of its own funds. Following rigorous testing, in 1967 NASA equipped the astronauts on the Apollo mission with these pens. Around 400 were purchased at a price of $6 each. In 1969, the Soviet Union also purchased 100 pens and 1,000 refills for the Soyuz missions. To this day, the Fisher Space Pen is used by astronauts all over the world.

Where can I buy the Fisher Space Pen 400BCL in Bulgaria?

You can find the Fisher Space Pen 400BCL in a matt black body with a clip and a gift box at the Dulotec.COM online shop. The shop offers high-quality outdoor products, tactical equipment and luxury gifts for men. The pen is available with fast delivery throughout Bulgaria.