Reducer Brass 1/4x3/8 M/f

At a Glance: Brass reducer adaptor with 1/4 x 3/8 male/female threads for stepping between pneumatic fitting sizes.

The AirCraft SB1222 brass reducer is a compact adaptor designed to connect pneumatic components while stepping between 1/4 and 3/8 thread sizes, using a male/female configuration. It’s ideal for compressed-air assemblies such as couplers, regulators, filters, valves and manifolds where you want a clean size transition without stacking multiple fittings. Brass construction adds durability and corrosion resistance, helping keep your pneumatic system reliable, leak-resistant and easy to service in everyday workshop use.

When you’re joining a tool-side 1/4 component into a slightly larger 3/8 circuit, the right reducer keeps the build neat. The SB1222 helps you step up cleanly, reducing extra joints and helping improve sealing reliability.