7/16-20 X 5-1/2

The Winters 7/16-20 X 5-1/2 side bell bolt is a through-bolt fastener engineered for quick-change barrel systems and precision firearm platforms. Built for shooters and gunsmiths who demand repeatable accuracy and tool-free modularity, this hex-head bolt serves as the backbone of Winters' rapid-swap technology. Whether you're running a precision rifle, a competition platform, or a duty weapon requiring field-expedient caliber changes, this through-bolt delivers the clamping force and repeatability that separate professional-grade equipment from consumer alternatives.

Manufactured from steel and finished in zinc plating, the 7/16-20 X 5-1/2 bolt resists corrosion while maintaining consistent tensile strength under repeated assembly and disassembly cycles. The 7/16-20 thread pitch (0.050" per revolution) provides fine control over clamping pressure—essential for preserving bore alignment and shoot-through accuracy. At 5-1/2 inches in length, this fastener accommodates the depth requirements of modern quick-change systems without excess material that could interfere with optics, suppressor mounts, or thermal imaging. The hex-head design integrates with standard 5/8-inch wrenches, enabling field adjustment without proprietary tools.

Law enforcement armories, military gunsmiths, and competitive shooters rely on Winters quick-change components for training rotation, mission reconfiguration, and platform consolidation. This bolt pairs seamlessly with Winters barrel hangers and receiver-side components, delivering the precision repeatability required for sub-MOA performance. Proper torque sequencing and thread-locking compound (applied per manufacturer spec) ensure zero-shift between barrel swaps—a critical factor in duty and competitive environments where firearm reliability is non-negotiable. Installation is straightforward for anyone familiar with basic gunsmithing practices.