12mm x 1.25 Banjo Bolt w/ 1/8in NPT Port

The Russell 12mm x 1.25 Banjo Bolt with 1/8in NPT Port (SKU RUS640700) is a hydraulic and fluid system component purpose-built for applications requiring compact, secure gauge line connections. This single banjo-style bolt integrates a gauge port directly into a unified fastener assembly, eliminating the need for separate fittings and reducing connection points where leaks can develop. The cadmium-plated steel construction resists corrosion in high-pressure hydraulic environments while maintaining the strength needed to withstand sustained system pressures.

Specification and performance hinge on the 12mm x 1.25 thread pitch and the 1/8in NPT gauge port diameter. The thread size is standard for mid-range hydraulic manifold and cylinder work, while the 1/8in NPT port accepts pressure transducers, analog gauges, or quick-disconnect couplers. Two steel washers are included to distribute clamping pressure and prevent surface galling during installation. The compact 2.55-inch overall length fits tight manifold configurations where larger banjo assemblies cannot be accommodated. Proper torque and thread-sealing procedures are critical during installation to prevent micro-leaks that compromise system readout accuracy or cause gradual pressure loss.

This banjo bolt is specified in heavy equipment repair, marine hydraulic systems, off-road vehicle suspension overhauls, and industrial machinery rebuild where gauge monitoring is essential to safe operation. Field technicians and hydraulic specialists favor single-banjo configurations because they reduce assembly weight and simplify troubleshooting when system diagnostics require temporary gauge isolation. The cadmium plate finish performs reliably in both onshore industrial settings and salt-air environments where corrosion pressure is high.

Russell is recognized in the fluid power industry for consistency in thread quality and surface finish on banjo and adapter components. This part meets standard ISO and SAE specifications for metric-thread hydraulic fasteners, ensuring compatibility with OEM and aftermarket gauge and transducer interfaces across equipment brands and model years.