Bock #6 Type 250 series Fountain Pen Nibs
Precision German-profile replacement fountain pen nibs precision-formed for standard Bock #6 Type 250 series housings and custom bespoke fountain pen sections. Every piece undergoes optical tine alignment and microscopic slit inspection. Choose from PVD Stealth Black, Premium Golden, and Rose Gold finishes across 6 point sizes.
Select Finish & Point Size
Toggle front/back view on any card to examine tine geometry and reverse feed contact surface.
Bock #6 Type 250 series Fountain Pen Nib — Stealth Black Finish
Precision-engineered Bock #6 Type 250 series compatible fountain pen nib featuring an ultra-resilient matte black PVD coating, tuned for velvety ink distribution and zero hard-starts.
Bock #6 Type 250 series Fountain Pen Nib — Premium Golden
Lustrous premium golden electroplated Bock #6 Type 250 series nib crafted with balanced tine flex for expressive line modulation and effortless glide across paper.
Bock #6 Type 250 series Fountain Pen Nib — Warm Rose Gold Plated
Distinctive warm copper-tinged rose gold Bock #6 Type 250 series replacement nib with micro-ground iridium tipping for ultra-smooth capillary ink transfer.
Bock Type 250 Architecture & Fitment Standards
Housing & Feed Collar Fitment
The Bock Type 250 nib unit is one of the most widely adopted standards in luxury and bespoke fountain pen making. The nib shank has a calibrated arc designed to wrap securely around a 6.0mm diameter feed with the distinctive Bock tail contour.
- Housing Collar: Bock Type 250 threaded assemblies
- Feed Diameter: 6.0mm (standard & high-flow ebonite)
- Material: Premium German spring stainless steel with hard tipping pellet
- Total Length: Approx. 35mm from tail to tip
Point Sizes & Writing Characteristics
Every nib point size is calibrated for smooth ink release and responsive feedback on standard fountain pen paper:
- EEF (~0.3mm): Ultra-crisp hairlines for microscopic writing and technical sketching
- EF (~0.4mm): Precise everyday journaling with quick-dry fountain pen inks
- Fine (~0.5mm): Balanced wetness for signatures and general office notes
- Medium (~0.65mm): Rich shading and smooth glide across all paper grades
- Broad (~0.85mm): Expressive character, highlighting sheen and shimmering inks
- Double Broad (~1.1mm): Wet calligraphy strokes, bold signatures, and stub conversions
Pair with RS Hand-Cut Ebonite Feeds
Maximize ink buffer capacity and capillary control by pairing your Bock nib with our 6.0mm ebonite feeds.
Bock #6 Replacement FAQs
Can I swap this nib into my existing pen without buying a new housing?
Yes. If your fountain pen uses a Bock #6 or Type 250 housing unit, you can easily friction-fit this replacement nib with your current feed and collar. Our nibs follow strict German curvature specifications for seamless friction fitment.
How do I order or check live stock on WhatsApp?
Select your desired point size on the nib card above and click the “Enquire on WhatsApp” button. This connects you directly with our workshop technician who can verify stock, advise on feed pairing, and provide direct dispatch tracking.
Crafted with uncompromising standards
Transparent commitments to ensure every pen artisan, collector, and retailer receives reliable service, the best fountain pens, and quality feeds.
All-India & Global Shipping
Complimentary tracked domestic shipping across India. Expedited air freight available for international B2B orders.
100% Hand-Cut Ebonite Guarantee
Every feed is precision machined from natural hard rubber ebonite and hand-adjusted for optimal ink flow regulation.
Discount on Name Engraving
Special festive discount on personalized name engraving. Custom feed dimensions & branding available for manufacturers.
RS Warranty & Replacements
Direct 7-day RS Writing Instruments replacement for manufacturing defects. Dedicated WhatsApp support for technical assistance.