Veloci Prima 3/8" Stainless Steel Female NPT Quick Coupler Upgrade your pressure washing game with Veloci’s American-made Prima quick couplers, the superior choice for pressure washing accessories. Crafted from the highest quality American stainless-steel, our Prima quick couplers are 100% machined from round bar stock at our manufacturing facility in Minnesota. What sets our product apart from the rest? Let’s take a closer look. Our quick couplers are made of 303 stainless-steel sourced from the City of Steel itself, Pittsburgh, PA USA. Our Prima stainless steel quick connect features EPDM seals for high temperature and chemical tolerance. Veloci’s 3/8" fittings can be used between the pump and the spray gun where a 3/8" hose is commonly used. The male pressure washer coupling fitting has exposed threads while the female fitting has threads on the interior of the fitting. All Veloci fittings are National Pipe Thread (NPT), meaning they have a tapered male or female thread, and are commonly used in North America. When installing NPT fittings, we recommend using 4-5 wraps of tape wound clockwise or 2-3 drops of thread sealant. Our Prima quick couplers are the perfect quick connect pressure washer fittings for all your pressure washing needs. Upgrade your pressure washing game with Veloci’s Prima quick couplers today! British Standard Pipe Thread (BSP) is found in the European market and is considered a 'straight thread' with no taper. When installing NPT on BSP or vice versa, use 6-7 wraps of tape or 2-3 drops of thread sealant and tighten accordingly. When tightening opposing thread styles (BSP and NPT) you will experience more interference sooner and you will not be able to tighten the fitting as far as like-threads, but will still have a tight seal, just make sure to use the recommended amount of tape or thread seal. Warning: This product contains chemicals known to the state of California to cause cancer and birth defects or other reproductive harm.