Tikka T3/T3x Bolt Knob – Helix Sphere

Description

Tikka T3/T3x Bolt Knob – Helix Sphere

This bolt knob is an ergonomic upgrade for the Tikka T3/T3x platform. The spherical profile extends the factory bolt handle and provides a smooth, intuitive interface for faster, more controlled cycling. Its helix‑twisted surface texture offers enhanced grip and a distinctive tactile feel while maintaining a shape similar to the factory oversized knob.

The Helix Sphere model is ideal for shooters who want a clean, unobtrusive design with a more textured, dynamic surface. For alternative shapes, see our Sphere, Cratered Column and Vented Fluted Spire bolt knobs.

Performance and Installation

The bolt knob installs in minutes using an expansion‑plug system. Insert the plug end into the drilled hole of the factory bolt handle and tighten the stainless steel set screw. As the screw advances, the plug expands and locks securely in place. The circumferential grooves on the plug increase friction and help prevent rotation or movement under recoil.

This system provides a firm, repeatable connection without requiring permanent modification to the bolt handle.

Manufacturing and Material Characteristics

Most aftermarket bolt knobs are produced using low‑end desktop printing, which creates weak points along layer lines. These components often fail when lateral force is applied during cycling.

Insimbi Outdoor bolt knobs are manufactured using industrial selective laser sintering (SLS), a process that fuses PA12 powder into a dense, homogeneous structure:

• PA12 nylon construction for high impact resistance and long‑term durability
• Stainless steel set screw for corrosion‑resistant clamping force
• Uniform SLS material properties comparable to injection‑moulded components
• Designed and engineered in Germany for consistent fit and performance

This controlled manufacturing approach ensures a robust, reliable upgrade suitable for both hunting and precision applications.

Included in the package:

• Bolt Knob
• 2,5 mm Allen Key
• Installation Manual

Disclaimers

Before installation, please read the installation instructions carefully. Factory bolt knobs are often glued in place with JB Weld or similar epoxy. Depending on your environment and usage, you may need to apply epoxy as well to prevent movement or slipping.

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