SSP-7821-1 .563-18 UNF Airline Hex Nut

The SSP-7821-1 is an authentic OEM replacement part, specifically meant to fasten the air compressor air tube securely to the pump head of oil-free air compressor models.

Air compressor models manufactured by reputable brands such as Craftsman, Black and Decker, DeVilbiss, DeWALT, Porter Cable, and others have used the SSP-7821-1.

During replacement, it is advisable to also replace the silicone sleeve or o-ring, depending on your air compressor model.