Series 342 couplings are engineered for extreme durability in the toughest working conditions. Constructed from zinc-plated steel with a hardened locking sleeve, they deliver exceptional resistance to wear and impact. The range includes various connection options and anti-hose whip nipples for enhanced safety. An automatic safety-locking mechanism prevents accidental disconnection, ensuring secure and reliable operation. Features: Compressed Air Couplings with Safety Lock Maximum Working Pressure: 35 bar Main Material: Zinc-plated steel Supplier part no: 103421002 (1/4" Hosetail) 103421003 (5/16" Hosetail) 103421004 (3/8" Hosetail) 103421152 (1/4" Male BSPT) 103421154 (3/8" Male BSPT) 103421155 (1/2" Male BSPT) 103421202 (1/4" Female BSPT) 103421204 (3/8" Female BSPT) 103421205 (1/2" Female BSPT) 103421452 (1/4" Male NPT) 103421454 (3/8" Male NPT)