JoyTube 1/2" Hose ID barb Thru-Bulk Bulkhead Fittings Union Adapter Plastic Fittings with Stainless Steel Washers for Aquarium Water/Fuel/Air (Pack of 2)

• Thru-Bulk Bulkhead Fittings is connect with 1/2" ID hose with the same size.Barbed fitting for a tight seal on hoses.
• TIPS:The plastic bulkhead hose barb fittings can hold -9 °F to 175 °F temperature, but it's not resistant to oil.
• Made of PP Polypropylene plastic, no toxic and crack.
• Smooth surface and inner wall, durable Light and Small. Exquisite craftsman makes it safe and reliable.
• Wide range of use: Suitable for applications in garden, pharmaceutical, food and beverage,laboratory, Aquarium and others.

To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.

• Question : What size hole saw will I need for these? And what hole size will be needed for rubber washers to create a better seal than hard plastic alone?
  Answer : The 5/16" Hose ID Barb Thru Bulkhead Fitting has a threaded end. Its widest point is 9.2 mm. Therefore, the minimum hole size and rubber washers requirements are 9.2 mm.
• Question : What is the length of the useable thread?
  Answer : The useable thread is about 9MM.
• Question : What is the thread size for the 1/2" version?
  Answer : The 1/2" is in reference to the size of the barbs. That means if you are using it as a union for hoses, you need 1/2" inner diameter hosing.
• Question : I understand the barb is 1/2", but how big is the actual nut itself?
  Answer : The actual nut is M16.