O.S. Engine OS74003540 M5 stand-off mount 25.4mm (1')  [OS74003540]

M5 Stand-off Mount 25.4mm

This O.S. Engine OS74003540 M5 stand-off mount is a compact engine accessory specified at 25.4mm (1') length and designed for use with M5-threaded mounting points on RC models. It serves as a spacer to establish or maintain clearance between the engine and adjacent components, helping with alignment and packaging inside the model chassis.

Installation is straightforward: the standoff is paired with M5 bolts or nuts and tightened to secure the engine or mounting flange at the specified offset. Use thread-lock where appropriate on metal-to-metal fasteners and verify alignment before final torque to avoid misaligned drive components.

For tuning and setup, standoffs like this are used to fine-tune engine position for drive line alignment, cooling airflow clearance, and to create room for ancillary parts such as fuel lines or muffler fittings. When replacing or adding stand-offs, match the M5 thread standard and the 25.4mm length requirement for consistent results.

Choose this standoff when you need a fixed 25.4mm spacing using M5 hardware, and confirm thread and clearance before permanent installation.