BSP adapters and fittings use the imperial system of units, usually inches for pipe and thread sizes. The design standards are in line with British Standards such as BS 5200, BS EN ISO 8434 etc, and are therefore widely used in the UK and some other countries.

They have the characteristics of high pressure bearing capacity, reliable sealing, corrosion resistance, etc., and are often used in aerospace, automobile industry, machinery manufacturing and other fields.

NJ offer BSPP & BSPT adapters and fittings in 4 sealing types, such as o-ring seal, tapered thread seal, bonded seal, and flat face seal.