YS Engine YSS1004 Cylinder Head Screws Pack 50 pcs for Hobby Engines  [YSS1004]

Pack of 50 head screws

This 50pcs pack of cylinder head screws is a straightforward spare set intended for RC-scale glow and nitro engine maintenance. The fasteners serve as direct replacements when original screws go missing, become worn, or are damaged during disassembly.

Install these screws during cylinder head service to preserve secure clamping between the head and crankcase. They are presented as general spare parts for hobby engines and work well for routine teardown, inspection, and tuning tasks that demand reliable thread engagement.

Before fitting, inspect the crankcase threads and use the proper torque for your engine to prevent thread stripping or head distortion. Store the screws by length during disassembly to keep head spacing and compression consistent after reassembly.