Uni Power Tank SNP-5 Ballpoint Refill

Uni Power Tank SNP-5 Pressurized Ballpoint Refill (0.5mm)

Keep your field-tested writing instruments performing at peak reliability with the authentic Uni Power Tank SNP-5 pressurized ballpoint refill. Specifically engineered for the Uni SN-200PT Power Tank pen body, this self-contained refill features an internal compressed air chamber pressurized to 3,000 hectopascals (hPa). By constantly advancing high-viscosity oil-based ink toward the micro 0.5mm tungsten carbide ball tip, the SNP-5 guarantees immediate, zero-skip writing whether you are marking vertical clipboards, signing receipts in damp conditions, or jotting notes in sub-zero job sites.

Key Features

• Pressurized Ink Delivery: Hermetically sealed 3,000 hPa internal air reservoir eliminates gravity reliance, enabling effortless upside-down and angled writing.
• Fine 0.5mm Precision Line: Precision-ground tungsten carbide ball produces crisp, smear-resistant 0.5mm lines ideal for tight field notebooks, forms, and technical diagrams.
• All-Weather Oil-Based Ink: Specially formulated pigment-rich ballpoint ink flows smoothly onto wet paper and resists freezing in temperatures down to -20°C (-4°F).
• Seamless Drop-In Replacement: Factory-spec dimensions ensure a perfect fit with positive spring retention inside Uni Power Tank SN-200PT bodies.
• Translucent Indicator Tube: Clear reservoir casing allows convenient monitoring of remaining pressurized ink level.

Specifications

• Brand: Uni (Mitsubishi Pencil Co.)
• Model: SNP-5 (Power Tank Series)
• Product Type: Pressurized Ballpoint Pen Refill
• Tip Size: 0.5 mm Extra Fine
• Ink Type: High-density oil-based ballpoint ink
• Compatibility: Uni Power Tank SN-200PT Series (SN-200PT-05 / SN-200PT-07 / SN-200PT-10)
• Country of Origin: Japan

Frequently Asked Questions

Which pen models are compatible with the SNP-5 refill?
The SNP-5 is designed primarily for the Uni Power Tank SN-200PT retractable pen body. It directly replaces factory cartridges in 0.5mm, 0.7mm, and 1.0mm SN-200PT models.

Can I use an SNP-5 refill in an SN-200PT pen originally sold with a 0.7mm or 1.0mm tip?
Yes. All standard Uni SN-200PT pen bodies share the identical internal refill cavity, allowing you to switch between 0.5mm (SNP-5), 0.7mm (SNP-7), and 1.0mm (SNP-10) tip sizes freely.

Does this refill retain its pressurization in storage?
Yes. The SNP-5 refill is factory-sealed under 3,000 hPa of internal air pressure and maintains its charge across extended shelf life when stored at normal room temperature.

Will the 0.5mm fine tip tear through wet paper?
No. The tungsten carbide ball is precision-ground and seated in a smooth stainless steel nose cone that glides across damp sheets and outdoor paper without snagging.