Aerotec Couplings & Connectors Pneumatic push-fit nipple 622812 - Aerotec 2005014Z, The Aerotec pneumatic push-fit nipple is part of their compressor accessories line. It features an easy-to-use push-fit design and is typically used in compressor applications. The product is identified by code 2005014Z and comes as a single piece. Aerotec 2005014Z Pneumatic Push-Fit Nipple 3/8" Male Thread Brass