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Buy Ohto 175NP / 177NP Ballpoint Refills
When buying an Ohto 175NP / 177NP Ballpoint Refill, check the model number, length, diameter, and tip size before ordering. The 175NP is the 0.5 mm version, while the 177NP is the 0.7 mm version.
Quick Specs
| Specification | Details |
|---|---|
| Manufacturer | Ohto |
| Refill Category | Ballpoint-style refill |
| Refill Shape | Slim stick-style refill |
| Product Family | Ohto 175NP / 177NP refill family |
| Ink Type | Soft ink / low-viscosity ballpoint-style ink |
| Length | 117 mm (4.61 in) |
| Diameter | 3 mm |
| Body Material | Plastic |
| Pressurized | No |
| Retractable Compatible | Yes, in compatible pens |
| Common Tip Sizes | 0.5 mm, 0.7 mm |
| Common Ink Colors | Black |
On This Page
Ohto 175NP / 177NP Ballpoint Refill Overview
The Ohto 175NP / 177NP Ballpoint Refill is a slim 117 mm refill used in select Ohto-compatible ballpoint pens, including some slim wooden ballpoint pens and compact Japanese writing instruments. It uses Ohto’s soft ink, which gives it a smoother and darker writing feel than many traditional oil-based ballpoint refills.
The 175NP and 177NP are closely related refills. The Ohto 175NP is the 0.5 mm version, while the Ohto 177NP is the 0.7 mm version. Both share the same general 117 mm x 3 mm refill size and are typically available in black ink.
This refill is much longer than Ohto’s 70 mm, 89 mm, and D1-style mini refill options. Because Ohto uses several similar-looking model numbers, the Ohto 175NP / 177NP Ballpoint Refill should be matched by length, diameter, and model number before purchase.
Why Choose the Ohto 175NP / 177NP Ballpoint Refill?
Choose the Ohto 175NP / 177NP Ballpoint Refill if your pen originally used one of these long slim Ohto refills. This refill is useful for pens that need a narrow 117 mm refill body rather than a short compact refill or broader Parker-style refill.
The 175NP is the better choice if you prefer a finer 0.5 mm line. It works well for smaller handwriting, planners, note cards, and everyday writing where line control matters.
The 177NP is the better choice if you prefer a slightly broader 0.7 mm line. It gives the same general refill format with a bolder writing feel, while still keeping the slim needlepoint design.
Writing Characteristics
The Ohto 175NP / 177NP Ballpoint Refill uses soft ink, which is Ohto’s smoother low-viscosity ballpoint-style ink. It is designed to write more smoothly than a basic oil-based ballpoint refill while still keeping the practical behavior of a ballpoint-style refill.
The 175NP uses a 0.5 mm tip for a finer, more controlled line. The 177NP uses a 0.7 mm tip for a slightly broader line and smoother feel.
Both versions are good choices for users who like needlepoint refills, slim pen bodies, and tidy everyday writing. They are not gel refills, and they should not be expected to write like a wet rollerball. Their main advantage is the combination of slim compatibility, fine control, and smooth soft ink.
Compatible Pens
The Ohto 175NP / 177NP Ballpoint Refill fits select pens designed around the long 117 mm x 3 mm Ohto refill format. It is especially relevant for some slim wooden ballpoint pens and other pens that use this long narrow refill style.
Common compatible pens and pen families may include:
- Select Ohto-compatible wooden ballpoint pens
- Mark’s Inc. Days Wooden Ballpoint pens
- Mark’s Inc. Tous Les Jours pens
- Mark’s Inc. Wooden Cat pens
- Mark’s Inc. Wooden Wolf pens
- HiBi Wooden Ballpoint pens
- Other pens designed for long 117 mm x 3 mm slim refills
Some retailers associate the 175NP with Mark’s Inc. and HiBi wooden ballpoint pens, while Ohto’s official refill listing confirms the 175NP and 177NP size as 117 mm x 3 mm.
Compatibility should be confirmed before ordering. A refill can be close in length but still fail to fit if the diameter, tip shape, rear end, or spring stop does not match your pen.
Compatible Brands
The Ohto 175NP / 177NP Ballpoint Refill is primarily an Ohto refill, but it appears in some pens sold under other stationery and lifestyle brands.
Relevant brands and pen categories include:
- Ohto
- Mark’s Inc.
- HiBi
- Select Japanese wooden ballpoint pens
- Select slim stick-refill ballpoint pens
- Select long narrow refill pens using a 117 mm x 3 mm format
This is not a broad universal refill in the same way as a Parker-style G2 or D1 mini refill. Match it by measurement and physical shape rather than brand name alone.
Alternative Refills
The Ohto 175NP / 177NP Ballpoint Refill is a specialized long slim refill, so alternatives are more limited than they are for standardized refill formats. The safest replacement is the matching Ohto model.
Popular alternatives and comparison refills include:
- Ohto 175NP Ballpoint Refill
- Ohto 177NP Ballpoint Refill
- Ohto 895NP / 897NP Ballpoint Refill
- Ohto 705NP Ballpoint Refill
- Ohto R-4C5NP / R-4C7NP D1 Ballpoint Refill
- Long 117 mm x 3 mm slim ballpoint refills, only when dimensions and shape match
- Brand-specific wooden pen refills using the same long slim format
The 895NP / 897NP is shorter at about 89 mm, so it is not a direct replacement for the 175NP / 177NP. The 705NP is shorter still at 70 mm, and the R-4C5NP / R-4C7NP belongs to the D1 mini refill format.
Before choosing a substitute, use the Pen Refill Size Guide to compare refill length, diameter, tip style, and rear-end shape.
Refill Family
The Ohto 175NP / 177NP Ballpoint Refill belongs to Ohto’s long slim soft ink refill family. Both versions share the same 117 mm x 3 mm size and black soft ink, with the main difference being tip size.
The 175NP is the 0.5 mm version. The 177NP is the 0.7 mm version. Both are part of Ohto’s broader lineup of small and slim refills, but they are longer than many other Ohto refill types.
This family is separate from the Ohto 705NP compact refill, the Ohto 895NP / 897NP 89 mm refill, the Ohto R-4C5NP / R-4C7NP D1 refill, and the Ohto G-95NPS and PG-M05NP gel refill families.
How to Identify an Ohto 175NP / 177NP Ballpoint Refill
The Ohto 175NP / 177NP Ballpoint Refill is a long, slim plastic refill measuring 117 mm long and 3 mm in diameter. Ohto lists the 175NP as the 0.5 mm version and the 177NP as the 0.7 mm version.
Key identification points:
- 117 mm long
- 3 mm diameter
- Plastic PP body
- Black soft ink
- Needlepoint-style writing tip
- 175NP uses a 0.5 mm tip
- 177NP uses a 0.7 mm tip
- Long, slim stick-style refill shape
- Much longer than Ohto 705NP
- Longer than Ohto 895NP / 897NP
- Not a D1 mini refill
- Not a Parker-style G2 refill
- Not the same as Ohto PG-M05NP or G-95NPS gel refills
Do not confuse this refill with the Ohto 895NP / 897NP Ballpoint Refill, which is about 89 mm long. Also do not confuse it with the Ohto 705NP Ballpoint Refill, which is only 70 mm long.
Not sure if this is your refill? Check the Pen Refill Finder to compare refill size, shape, and compatibility before ordering.
Frequently Asked Questions
Is the Ohto 175NP / 177NP Ballpoint Refill a gel refill?
No. The Ohto 175NP / 177NP Ballpoint Refill is not a gel refill. Ohto lists it as a soft ink refill, which is a smoother low-viscosity ballpoint-style ink.
What is the difference between the Ohto 175NP and 177NP?
The difference is tip size. The Ohto 175NP is the 0.5 mm version, while the Ohto 177NP is the 0.7 mm version. Both are 117 mm long and 3 mm in diameter.
What size is the Ohto 175NP / 177NP Ballpoint Refill?
The Ohto 175NP / 177NP Ballpoint Refill measures 117 mm long and 3 mm in diameter. That equals approximately 4.61 inches long.
Does the Ohto 175NP / 177NP Ballpoint Refill fit Parker-style pens?
No, not normally. The Ohto 175NP / 177NP Ballpoint Refill is a long slim refill and should not be treated as a Parker-style G2 refill. Parker-style refills are shorter and have a different body shape.
Does the Ohto 175NP / 177NP Ballpoint Refill fit D1 pens?
No. The Ohto 175NP / 177NP Ballpoint Refill is much longer than a D1 mini refill and uses a different format.
What is the best alternative to the Ohto 175NP / 177NP Ballpoint Refill?
The best replacement is the matching Ohto model. Use the 175NP if your pen originally used the 0.5 mm version, or the 177NP if your pen originally used the 0.7 mm version. Other long 117 mm x 3 mm refills may be possible, but fit should be checked carefully before ordering.
Related Refills
- Ohto 895NP / 897NP Ballpoint Refill
- Ohto 705NP Ballpoint Refill
- Ohto R-4C5NP / R-4C7NP D1 Ballpoint Refill
- Ohto G-95NPS Gel Refill
- Ohto PG-M05NP Gel Refill
Related Guides
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