{"product_id":"pm-push-to-connect-bulkhead-union-fitting-4-12mm-1-8-1-2-thread-quick-release","title":"PM Push-to-Connect Bulkhead Union Fitting – 4\/6\/8\/10\/12mm Tube, 1\/8”–1\/2” Thread, Quick Release Air Connector","description":"\u003ch2\u003ePM Push-to-Connect Bulkhead Union Fitting – 4–12mm Tube, 1\/8”–1\/2” Thread, Quick Release\u003c\/h2\u003e\n\n\u003cp\u003ePM-series bulkhead union fittings provide a panel-mount push-to-connect interface — allowing pneumatic tubing to pass through a panel, enclosure wall, or manifold with a quick-release connection on one or both sides. The fitting threads into a panel hole from one side; tubing inserts into the push-in collet on the exposed side. This eliminates the need for tube fittings on both sides of a panel penetration, simplifying installation and enabling tool-free tube disconnection for maintenance access.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e PM (Panel Mount bulkhead union, push-to-connect)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTube OD:\u003c\/strong\u003e 4mm, 6mm, 8mm, 10mm, 12mm (select above)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/8”, 1\/4”, 3\/8”, 1\/2” BSP or NPT (select above)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e Brass or nickel-plated brass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeal:\u003c\/strong\u003e Collet + O-ring (push-to-connect end); thread sealant or O-ring (panel thread end)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 0–1.5 MPa (0–218 PSI)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -20°C to +80°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Compressed air, water, light oil\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePM Bulkhead vs Standard Push-In Fitting — When to Use Bulkhead\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard push-in fitting:\u003c\/strong\u003e Connects tube to a threaded port on a valve, cylinder, or manifold. No panel penetration.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePM bulkhead (this product):\u003c\/strong\u003e Mounts through a panel hole. Allows tubing to pass from inside an enclosure to outside (or vice versa) with a sealed, push-to-connect interface. Used for: pneumatic enclosure penetrations, manifold panel connections, machine frame tube routing, and any application where tubing must cross a physical barrier.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat Questions Does This Product Answer?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cem\u003e\"What panel hole size do I need for a PM fitting?\"\u003c\/em\u003e — The panel hole size matches the fitting’s thread OD: 1\/8” BSP ≈ 9.7mm hole; 1\/4” BSP ≈ 13.2mm hole; 3\/8” BSP ≈ 16.7mm hole; 1\/2” BSP ≈ 20.9mm hole. Use a step drill or hole saw of the correct diameter.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cem\u003e\"Can I use PM fittings on both sides of a panel?\"\u003c\/em\u003e — Standard PM fittings have a push-in collet on one side and a threaded body on the other (for panel mounting). For push-in connections on both sides, use a through-bulkhead union (PB series) which has collets on both ends.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cem\u003e\"Do PM bulkhead fittings seal the panel hole?\"\u003c\/em\u003e — Yes. The fitting body includes a sealing washer or O-ring that seals against the panel surface when the locknut is tightened. This prevents air, dust, and moisture from passing through the panel hole around the fitting body.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cem\u003e\"What is the maximum panel thickness for PM fittings?\"\u003c\/em\u003e — Typically 1–3mm for standard PM fittings. For thicker panels, use extended-body PM fittings or add a spacer washer behind the panel. Verify the fitting’s thread engagement length against your panel thickness.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePneumatic enclosures:\u003c\/strong\u003e Routing air supply and exhaust lines through control cabinet walls\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMachine frames:\u003c\/strong\u003e Passing tubing through structural members and frame panels\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManifold panels:\u003c\/strong\u003e Connecting external tubing to internal manifold circuits through a panel interface\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModular systems:\u003c\/strong\u003e Creating standardized pneumatic connection points on equipment panels for field reconfiguration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cp\u003e5 pieces — PM push-to-connect bulkhead union fittings (tube OD and thread size as selected above). Locknut and sealing washer included.\u003c\/p\u003e","brand":"Cable Parts Online","offers":[{"title":"PM-4 \/ 5PCS","offer_id":47850721313013,"sku":"14:201441572#PM-4;183:202360806#5PCS","price":28.67,"currency_code":"USD","in_stock":true},{"title":"PM-6 \/ 5PCS","offer_id":47850721280245,"sku":"14:10#PM-6;183:202360806#5PCS","price":31.43,"currency_code":"USD","in_stock":true},{"title":"PM-8 \/ 5PCS","offer_id":47850721247477,"sku":"14:173#PM-8;183:202360806#5PCS","price":34.16,"currency_code":"USD","in_stock":true},{"title":"PM-10 \/ 5PCS","offer_id":47850721214709,"sku":"14:193#PM-10;183:202360806#5PCS","price":41.65,"currency_code":"USD","in_stock":true},{"title":"PM-12 \/ 5PCS","offer_id":47850721345781,"sku":"14:350686#PM-12;183:202360806#5PCS","price":51.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3494\/0149\/files\/S2fdb431d4d624efbb82d5d03832e4d52S.webp?v=1773899625","url":"https:\/\/www.csldmcml.com\/products\/pm-push-to-connect-bulkhead-union-fitting-4-12mm-1-8-1-2-thread-quick-release","provider":"Cable Parts Online","version":"1.0","type":"link"}