O.S. Engine OS79871430 M4x30 Hexagon Socket Cap Screw 10pcs  [OS79871430]

RC Engine and Chassis Fastening Screws

This M4x30 hexagon socket head cap screw set from O.S. Engine OS79871430 is offered as a 10pcs pack for RC engine and chassis applications. These fasteners suit general mounting and small assembly tasks where M4 threading is used.

Fitment advice: employ the correct hexagon driver to prevent cam-out, confirm adequate thread engagement, and avoid overtightening which risks thread damage or bending thin mounting tabs. Apply a medium-strength thread locking compound on metal-to-metal connections if persistent vibration is expected.

Usage note: as replacement hardware for engine mounts, motor mounts and brackets these screws help keep components aligned and reduce movement under load when installed and inspected regularly.