Quick Release Pins (2) 5/16 x 1in

The Quick Release Pins (2) 5/16 x 1in from MOROSO are essential fasteners designed for automotive builders, fabricators, and mechanics who demand tool-free assembly and disassembly on performance vehicles. Whether you're building a custom engine, securing hood pins, mounting removable components, or constructing adjustable suspension links, these quick release pins eliminate the need for traditional bolts and allow rapid reconfiguration without wrenches. They're ideal for racing applications, show cars, engine test stands, and any build where frequent access or modular design matters.

Each pin features a 5/16-inch diameter shaft with a 1-inch usable length, sized to fit standard 5/16-inch holes found on engine blocks, frame mounts, and fabricated brackets. The quick-release mechanism uses spring tension and a ball-detent locking system—a proven design that holds under vibration and shock loads while remaining easy to grip and remove by hand. MOROSO's construction emphasizes steel durability and precision machining, ensuring smooth insertion and reliable retention across repeated cycles. The supplied pair (two pins) provides coverage for dual-mount applications, such as engine bay tiedowns, radiator brackets, or suspension geometry links.

These pins suit any high-performance, street, or race engine build where modularity enhances serviceability. Fabricators and engine builders value quick release pins for mock-ups and test-fits, while drag racing and road course competitors use them to reduce pit-stop labor and support rapid configuration changes. Installation requires only drilling or sourcing pre-drilled 5/16-inch holes; no threading or complex tooling is needed. The compact 5/16 x 1in profile fits tight engine bays and low-profile applications without interference, making them a versatile choice for both classic restorations and modern performance platforms.