Introducing the Fibre Washer - the perfect solution for electrical insulation, marine usage, automotive usage, glazing, lighting, and plumbing needs. This washer, measuring 14.7mm x 9.3mm x 2.4mm, is specifically designed to fit 3/8" BSP female nuts, ensuring a secure and reliable connection. Durable and versatile, this washer is a must-have for any professional or DIY enthusiast.