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Home Shop FP Bestsellers Gravitas - Sentry Raw Grade 5 Titanium
GravitasSKU: GP-FP-SY-G5TI-11/SI-SN6

Gravitas - Sentry Raw Grade 5 Titanium

€140,00 /
Tax not included. Shipping calculated at checkout.
5.0 (3 reviews)
Nib: Steel
Nib Size: Extra Fine
Gravitas - Sentry Raw Grade 5 Titanium
€140,00 /
Nib: Steel
Nib Size: Extra Fine

 
 
Description

Meet the upgraded Sentry fountain pen, the larger sibling to the entry-level model from gravitas. While slightly lighter than its counterparts (Copper/Brass/Stainless Steel), the Sentry Titanium maintains a comfortable and user-friendly design, thanks to its weighted section. With triple-start ACME cap threads, the cap effortlessly disengages in just 2.25 turns. Sentry Raw Grade 5 Titanium comes uncoated and untreated with a smooth raw metal surface that is obtained without polishing, a testimony of precision machining that takes one pass of the diamond cutting lathe knife to obtain this surface finish.

Constructed from 304 stainless steel, the section is black PVD coated and features micro-machined grooves for an enhanced grip. To prevent marks from posting - the cap features a delrin sleeve and the upgraded Sentry series now comes with two o-rings, one on the section and one on the barrel, enhancing the experience while carrying and using the pen - preventing the accidental uncapping or untwisting of the section.

Equipped with a Gravitas-production size 6 steel nib compatible with Jowo No. 6 threads and abs plastic feeder, the Sentry offers versatile writing options, including Extra Fine, Fine, Medium, Broad and Fine Flex.

Enhancing your experience, the Sentry comes with a standard international converter provided with each fountain pen. If a larger ink capacity is needed - the Sentry Grade 5 Titanium is eyedropper friendly.

Elevate your writing journey with the refined craftsmanship of the Sentry fountain pen.

Specifications:

- brand: Gravitas
- type: Fountain Pen
- color: Silver
- body material: Grade 5 Titanium
- cap type: Screw-cap
- filling mechanism: Provided Converter / Standard International Cartridge
- nib material: Steel
- nib size: Extra Fine, Fine, Medium, Broad, Fine Flex
- postable: Yes
- trim: Silver color
- length overall (closed): 147 mm
- length overall (posted): 162 mm
- body length: 138 mm
- cap length: 62 mm
- body diameter: 14 mm
- cap diameter (without clip): 15 mm
- weight (overall): 54 grams
- body weight: 37,8  grams
- cap weight: 16,2 grams

Specifications

Brand: Gravitas
Model: Sentry
Edition:
Color: Silver
Body Material: Metal
Finish:

Cap Type:
Screw
Filling Mechanism:
Cartridge Converter
Postable:
Yes
Trim Color:
Length Overall (Closed): 147 mm
Length Overall (Posted): 162 mm
Body Length (Uncapped):
138 mm
Body Diameter: 13.25 mm
Cap Diameter (Without Clip): 15 mm
Weight Overall: 54 g
Body Weight: 37.8 g

Customer Reviews

Based on 3 reviews
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D
Destiny Smith
Kinda Like Steel, But Lighter

So, you want a pen that’s tough enough to handle all of your emotional write-ups at 03:30 GMT, is harder than woodpecker lips, has better corrosion resistance than stainless steel, while weighing significantly less? And you want it to write really well, for a long time, and you want to be able to do your own maintenance on it without breaking the bank?
Well, the Titanium Sentry will not disappoint. The nib unit is compatible with a JoWo #6 nib unit. The Gravitas nibs are very good, with a performance indistinguishable from a #6 European made nib. The fit and finish is excellent, there is no machining residue anywhere. The pen arrived with no scratches or marks of any kind. Don’t worry, it won’t stay that way for long, because life happens. But rest assured, short of gratuitous violence directed at this pen, there’s not much that would damage this pen to the point of unrecoverability.
Dependability, reliability, user serviceability, in a virtually bulletproof titanium shell. What’s not to love?

M
Mark van der Westen
A great pen with fantastic service.

I’ve purchased two Gravitas pens now from Pen Venture, the quality of the pens are amazing and well designed.

The service from Emy is second to none, great communication and fast shipping, I would highly recommend them as a supplier.

S
Shawn
Gravitas Sentry - fine flex

Nice and weighty pen with great details. The grip section has grooves so its grippy, the cap comes off effortlessly and it writes very smoothly with iroshizuku ink. Thanks to Emy for helping with my order and tuning the nib. Cheers!

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© 2026 Pen Venture - Passion Virtuous,

★ Reviews

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877 reviews
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R
Gravitas - Vac 2.0 Aluminium | Black
Richard L Sherman
Gravitas Vac 2

The construction of the Vac 2 is flawless. The textures of the materials and it's simple lines display an elegant beauty. The large steel nib delivers a pleasant writing experience and also provides a bit of flex.

C
Gravitas - Vac 2.0 Aluminium | Black
Chris

Amazing Pen! Gravitas makes one of the best piston fillers out there. I dont keep the nib and normally use the pen for coustom flex nibs with Jowo #6 compatible nib units. So, i really cant speak on the nib. However, this pen is just built with high quality components. The weight, feel, and overall aesthetics are unmatched. You wont find better at this price point.

R
Platinum - #3776 Century Kaga Maki-e Sansui GT
Robert Moore
Platinum Sansui - Smooth Operator

I recently acquired the Platinum Maki-e Sansui pen in a Medium nib. The Pen Venture team was kind enough to carefully inspect and tune this pen before sending it on to me. Many thanks for that. It writes very smoothly and with a steady flow of ink. The Medium nib is my favorite nib configuration from the Platinum brand. The line width is nice and thin and always writes consistently right of the box. This lovely Maki-e pen was no different. I highly recommend it.

D
Gravitas - Steel Nib Unit Silver | No. 6
David Sumrell
Gravitas #6 extra fine nib

The extra fine nib came tuned to perfection—a joy to write with. Thank you Emy!

J
Gravitas - Vac 2.0 Aluminium | Black
Jimmie
FANTASTIC!

The VAC 2.0 is a great improvement to an already great pen (the original VAC Ultem). The weight and balance are spot on. The cap and the new threads engage without hesitation. No missed closures and the cap has a nice stop when threading back on. It posts securely without issue. Filling with the Kraken system is easy. I got a medium nib and it is smoooooooth. Mine is on par with my 823 medium nib The smoothness, wetness and bounce would make you think it's a gold nib. Line width is slightly narrower than the 823 medium. The pen feels solid and well built. I'm not worried about this one getting knocked around. Overall a great pen. Shipping from Pen-Venture to Colorado was five days! Great pen and service all around!

123
Review picture
Isaac Leong
My wonderful first Titan pen

Beautiful colour. The nib is smooth and wet. The grip section is textured, I will not worry about writing with it in hot weather. This is my first demonstrator pen, I love watching the ink level drops (very slowly) in the barrel. The package is packed very securely. Thank you staffs at Pen Venture.

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