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Parker - Industrial Pipe Adapter: 3/4″ Female Thread, 1-5/16-12 Male Thread, Male Straight Thread O-Ring x Female NPTF - 72517931 - MSC Industrial Supply
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LTWFITTING 5/16 in. ID Hose Barb x 1/4 in. MIP Lead Free Brass Adapter Fitting (5-Pack) HFLF39185405 - The Home Depot
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1/4 turn 5/16 conversion head adapter all copper r410 reducer with valve core air conditioning refilling connector - AliExpress
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Hillman 6-Pack 5/16-in x 1/4-in Threaded Coupling Fitting in the Brass Fittings department at Lowes.com
![Apex® A-110 Socket and Ratchet Wrench Adapter, Imperial, Hex x Square Drive, 5/16 x 1/4 in Male Drive, Male x Male Adapter, Specifications Met: ASME B107.113, High Carbon Alloy Steel Apex® A-110 Socket and Ratchet Wrench Adapter, Imperial, Hex x Square Drive, 5/16 x 1/4 in Male Drive, Male x Male Adapter, Specifications Met: ASME B107.113, High Carbon Alloy Steel](https://www.actionis.com/media/catalog/product/a/p/apex_a_110_hr.jpg?quality=80&bg-color=255,255,255&fit=bounds&height=&width=)
Apex® A-110 Socket and Ratchet Wrench Adapter, Imperial, Hex x Square Drive, 5/16 x 1/4 in Male Drive, Male x Male Adapter, Specifications Met: ASME B107.113, High Carbon Alloy Steel
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Amazon.com: 1/4” X 5/16" Stainless Steel Barb Hose Splicer/Adapter/Connector : Industrial & Scientific
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