The Sirius Set Screws Brass in M4 x 20mm is a fully threaded brass hexagon head fastener suitable for light engineering, electrical and decorative applications requiring a longer M4 fixing. The 20mm length accommodates thicker material sections at this thread size. Features and Benefits: • Manufactured from high-quality brass • Excellent corrosion resistance • Fully threaded for maximum thread engagement • Hexagon head for spanner or socket installation • Precision metri
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