Ti-Parts Titanium
M5/M6 Titanium Seatpost Saddle Barrel Nut | Road/Gravel/Folding
M5/M6 Titanium Seatpost Saddle Barrel Nut | Road/Gravel/Folding
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Titanium Seatpost Barrel Nut for most types of bicycle seatposts.
An excellent replacement for the heavy stock barrel nuts. Comes in various sizes!
Please measure your original barrel nut to find a suitable upgrade.
Titanium bolts are approximately 40% lighter than standard steel bolts and are highly resistant to corrosion. Combined with our Particle Vapour Deposition (PVD) finishing process, these bolts are built to last a lifetime while maintaining their premium appearance.
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Compatibility
Various road, gravel, folding, MTB, minivelo bikes that uses a barrel nut.
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Specifications
M5 Barrel Nut (Diameter x Length (mm))
8 x 13.5 - 1.92g/pc
8 x 15.5 - 2.81g/pc
M6 Barrel Nut (Length x Diameter (mm))
9 x 18 - 3.4g/pc
10 x 13 - 2.56g/pc
10 x 14 - 2.98g/pc
10 x 20 - 4.76g/pc
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Why Choose Titanium Bolts?
Read about our titanium bolts HERE
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Disclaimer
Other components in the pictures are not included.
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Features
Excellent Corrosion and Oxidation Resistance
Engineered to withstand harsh environments, offering superior resistance against rust and corrosion.
Up to 50% Lighter Than Standard Steel Bolts
Significantly reduces overall system weight without compromising strength, ideal for high-performance applications.
High Strength-to-Weight Ratio
Manufactured from aerospace-grade materials, combining exceptional hardness and durability with lightweight characteristics.
Enhanced Surface Finish via PVD Coating
Applied with advanced Physical Vapor Deposition (PVD) technology, delivering a smoother, brighter, and more durable finish compared to conventional electroplating.
Precision Polished Finish
Mirror-like polish enhances aesthetics while minimizing surface friction and debris accumulation.
Constructed from Grade 5 Titanium (Ti-6Al-4V)
Offers outstanding tensile strength, fatigue resistance, and reliability — the industry benchmark for high-performance fasteners.
Screw Measurement Guide
Screw Measurement Guide
To determine a suitable replacement screw for you, measure your old screw(s) using the guide below.

Download a HD copy here
Warranty
Warranty
Our Limited Lifetime Warranty backs this product against manufacturing defects.
User misuse, improper torque application, or tool-induced damage are expressly excluded.
For more information, please see this page.
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Does not fit on the 2025 Specialized S-works, Barrel Nut outside face needs to end on angle to fit seatpost properly!
First order did not fit, so I thought it needed to be longer, ordered again a longer nut but still did not fit correctly, wasted my time and money.
Feeling Very disappointed
Amazing product it’s exactly what I was looking for. Lightweight and high quality.



