A capped silo bolt keeps the thread and nut protected from weather and grime, and gives the outside of the silo a neater finish.

ASL supplies capped silo bolts in steel and stainless steel, plus plastic nut caps on their own if you are capping existing fixings.

Matching nuts and washers are available too. Call Advance Spares Limited on 01978 823 900 to discuss sizes and quantities.