{"product_id":"brass-push-to-connect-pneumatic-bulkhead-union-fittings","title":"Brass Push-to-Connect Pneumatic Bulkhead Union Fittings — 4mm 6mm 8mm 10mm 12mm","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eBrass Push-to-Connect Pneumatic Bulkhead Union Fittings — Mount Through Panels Without Leaks\u003c\/h2\u003e\n\u003cp\u003eRouting compressed air lines through enclosure walls, machine panels, or cabinet bulkheads is a common headache for pneumatic system builders, automation technicians, and serious DIYers. A loose connection or mismatched fitting can mean pressure drops, air leaks, and hours of troubleshooting. These \u003cstrong\u003ebrass push-to-connect pneumatic bulkhead union fittings\u003c\/strong\u003e are designed to eliminate that frustration — giving you a secure, panel-mounted pass-through that connects tubing on both sides with a single push.\u003c\/p\u003e\n\u003cp\u003eEach fitting is machined from solid brass with a threaded body for panel mounting and push-fit collet ends on both sides. Available in five tube OD sizes — PM-4mm (≈5\/32\"), PM-6mm (≈1\/4\"), PM-8mm (≈5\/16\"), PM-10mm (≈3\/8\"), and PM-12mm (≈1\/2\") — and sold in quantities of 1, 2, 5, or 10 pieces so you can stock exactly what your project needs.\u003c\/p\u003e\n\u003cp\u003eTypical applications include pneumatic control panel wiring, air-line pass-throughs in CNC enclosures, workshop compressor distribution manifolds, and automated machinery where clean bulkhead routing is required. The one-touch connection design makes these ideal for \u003cem\u003equick-connect pneumatic fittings for air compressor lines\u003c\/em\u003e and \u003cem\u003epush-fit tube fittings for panel mounting\u003c\/em\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003eℹ️\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for rigid and semi-rigid pneumatic tubing (PU, PA\/nylon, PE) with matching outer diameter. Verify your tube OD before ordering. PTFE tape recommended on threaded body for leak-free panel installation.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These Brass Pneumatic Bulkhead Union Push Fit Fittings\u003c\/h2\u003e\n\u003cul class=\"hdiy-features\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eSolid Brass Construction\u003c\/strong\u003e — Machined from brass for reliable corrosion resistance and durability in compressed air systems, outperforming plastic push-fit fittings in demanding shop environments.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eOne-Touch Push-to-Connect Ends\u003c\/strong\u003e — Tool-free tube insertion on both sides; the internal collet grabs and locks the tube instantly, making these \u003cem\u003equick-connect air line fittings\u003c\/em\u003e fast to install and reconfigure.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏗️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eThreaded Bulkhead Body\u003c\/strong\u003e — The threaded center section passes through a panel cutout and secures with a locknut, creating a clean, vibration-resistant pass-through for pneumatic tubing through enclosure walls.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFive Tube Sizes Available\u003c\/strong\u003e — Covers PM-4mm through PM-12mm OD tubing, making it straightforward to match your existing pneumatic line diameter without adapters or reducers.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eReusable \u0026amp; Reconfigurable\u003c\/strong\u003e — The collet release mechanism allows the tube to be removed and reinserted repeatedly without damaging the fitting, supporting iterative builds and system modifications.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlexible Quantity Options\u003c\/strong\u003e — Available in 1, 2, 5, or 10-piece sets so you can buy a single fitting for a repair or stock up for a full panel build — no need to over-order.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📐 Technical Specifications — Brass Pneumatic Bulkhead Union Push Fit Fittings\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFitting Type\u003c\/th\u003e\n\u003ctd\u003eBulkhead Union (straight through, panel-mount)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConnection Style\u003c\/th\u003e\n\u003ctd\u003ePush-to-connect (push-fit collet) both ends\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eBrass (body \u0026amp; collet housing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Tube OD Sizes\u003c\/th\u003e\n\u003ctd\u003ePM-4mm (≈5\/32\"), PM-6mm (≈1\/4\"), PM-8mm (≈5\/16\"), PM-10mm (≈3\/8\"), PM-12mm (≈1\/2\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Tubing\u003c\/th\u003e\n\u003ctd\u003ePU, PA (nylon), PE pneumatic tubing — matching OD required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Thread\u003c\/th\u003e\n\u003ctd\u003eSee variant options \/ Contact us to confirm pitch \u0026amp; standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorking Pressure\u003c\/th\u003e\n\u003ctd\u003eTypically up to ~150 PSI (≈10 bar) — contact us to confirm by size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorking Temperature\u003c\/th\u003e\n\u003ctd\u003eGenerally suitable for standard shop\/industrial ambient temperatures\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 Pcs \/ 2 Pcs \/ 5 Pcs \/ 10 Pcs (select above)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003ePneumatic panel wiring, air-line bulkhead pass-throughs, automation enclosures\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-note\"\u003e\n\u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e \u003cstrong\u003eNote:\u003c\/strong\u003e Thread pitch and panel cutout diameter vary by size. If you are integrating these into a precision panel or manifold, please contact us to confirm exact thread and body dimensions before ordering.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right tube size for these bulkhead fittings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMatch the fitting size to your tubing's \u003cstrong\u003eouter diameter (OD)\u003c\/strong\u003e — not the inner diameter. PM-4mm fits 4mm OD tubing (≈5\/32\"), PM-6mm fits 6mm OD (≈1\/4\"), PM-8mm fits 8mm OD (≈5\/16\"), PM-10mm fits 10mm OD (≈3\/8\"), and PM-12mm fits 12mm OD (≈1\/2\"). If you are unsure, measure your existing tube with calipers before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum working pressure these fittings can handle?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBrass push-to-connect pneumatic fittings of this type are generally rated for working pressures up to approximately \u003cstrong\u003e150 PSI (≈10 bar)\u003c\/strong\u003e at room temperature. Actual ratings may vary by size. Contact us to confirm the pressure rating for your specific variant before use in high-pressure applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these bulkhead fittings be used outdoors or in humid environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eBrass offers good corrosion resistance for most indoor and sheltered outdoor applications. For prolonged exposure to salt spray, standing water, or highly corrosive environments, additional sealing or stainless steel alternatives are typically recommended. In standard workshop or factory conditions, brass performs reliably.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat thread standard do these fittings use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese are threaded bulkhead union fittings with a threaded body for panel mounting. The thread standard is generally metric-compatible for standard pneumatic panel applications. If you need to confirm compatibility with a specific pitch, BSP, or NPT standard, please contact us before ordering to avoid mismatches.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need any tools or sealant to install these fittings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe push-fit ends are \u003cstrong\u003ecompletely tool-free\u003c\/strong\u003e — push the tube in until it clicks and it locks automatically. The threaded body section requires a wrench for panel mounting. PTFE tape is generally recommended on the threaded portion to ensure a leak-free seal against the panel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these fittings compatible with polyurethane (PU) and nylon (PA) tubing?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Brass push-to-connect fittings of this type are typically compatible with \u003cstrong\u003ePU, PA (nylon), and PE\u003c\/strong\u003e pneumatic tubing of the matching outer diameter. They are not recommended for soft silicone tubing without a tube insert, as silicone may not hold securely in the collet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I release the tube from a push-fit fitting?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eFirst, \u003cstrong\u003edepressurize the air line\u003c\/strong\u003e. Then press the collet ring (the outer ring at the fitting mouth) inward while simultaneously pulling the tube out. The collet releases the internal grab ring, allowing the tube to slide free without damage to the tube or fitting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your \u003cstrong\u003esize and quantity\u003c\/strong\u003e above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"PM-4mm \/ 1 Pcs","offer_id":52331582325010,"sku":"GLFBQLWGLBZSJ017832x1","price":3.79,"currency_code":"USD","in_stock":true},{"title":"PM-4mm \/ 2 Pcs","offer_id":52331582357778,"sku":"GLFBQLWGLBZSJ017832x2","price":5.24,"currency_code":"USD","in_stock":true},{"title":"PM-4mm \/ 5 Pcs","offer_id":52331582390546,"sku":"GLFBQLWGLBZSJ017832x5","price":11.27,"currency_code":"USD","in_stock":true},{"title":"PM-4mm \/ 10 Pcs","offer_id":52331582423314,"sku":"GLFBQLWGLBZSJ017832x10","price":21.42,"currency_code":"USD","in_stock":true},{"title":"PM-6mm \/ 1 Pcs","offer_id":52331582456082,"sku":"GLFBQLWGLBZSJ017833x1","price":3.66,"currency_code":"USD","in_stock":true},{"title":"PM-6mm \/ 2 Pcs","offer_id":52331582488850,"sku":"GLFBQLWGLBZSJ017833x2","price":4.75,"currency_code":"USD","in_stock":true},{"title":"PM-6mm \/ 5 Pcs","offer_id":52331582521618,"sku":"GLFBQLWGLBZSJ017833x5","price":10.13,"currency_code":"USD","in_stock":true},{"title":"PM-6mm \/ 10 Pcs","offer_id":52331582554386,"sku":"GLFBQLWGLBZSJ017833x10","price":19.11,"currency_code":"USD","in_stock":true},{"title":"PM-8mm \/ 1 Pcs","offer_id":52331582587154,"sku":"GLFBQLWGLBZSJ017834x1","price":3.79,"currency_code":"USD","in_stock":true},{"title":"PM-8mm \/ 2 Pcs","offer_id":52331582619922,"sku":"GLFBQLWGLBZSJ017834x2","price":5.51,"currency_code":"USD","in_stock":true},{"title":"PM-8mm \/ 5 Pcs","offer_id":52331582652690,"sku":"GLFBQLWGLBZSJ017834x5","price":12.04,"currency_code":"USD","in_stock":true},{"title":"PM-8mm \/ 10 Pcs","offer_id":52331582685458,"sku":"GLFBQLWGLBZSJ017834x10","price":22.92,"currency_code":"USD","in_stock":true},{"title":"PM-10mm \/ 1 Pcs","offer_id":52331582718226,"sku":"GLFBQLWGLBZSJ017835x1","price":4.88,"currency_code":"USD","in_stock":true},{"title":"PM-10mm \/ 2 Pcs","offer_id":52331582750994,"sku":"GLFBQLWGLBZSJ017835x2","price":8.69,"currency_code":"USD","in_stock":true},{"title":"PM-10mm \/ 5 Pcs","offer_id":52331582783762,"sku":"GLFBQLWGLBZSJ017835x5","price":19.92,"currency_code":"USD","in_stock":true},{"title":"PM-10mm \/ 10 Pcs","offer_id":52331582816530,"sku":"GLFBQLWGLBZSJ017835x10","price":38.75,"currency_code":"USD","in_stock":true},{"title":"PM-12mm \/ 1 Pcs","offer_id":52331582849298,"sku":"GLFBQLWGLBZSJ017836x1","price":5.7,"currency_code":"USD","in_stock":true},{"title":"PM-12mm \/ 2 Pcs","offer_id":52331582882066,"sku":"GLFBQLWGLBZSJ017836x2","price":10.19,"currency_code":"USD","in_stock":true},{"title":"PM-12mm \/ 5 Pcs","offer_id":52331582914834,"sku":"GLFBQLWGLBZSJ017836x5","price":23.87,"currency_code":"USD","in_stock":true},{"title":"PM-12mm \/ 10 Pcs","offer_id":52331582947602,"sku":"GLFBQLWGLBZSJ017836x10","price":46.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of12_60df16fc-c559-4ed2-8361-debd78bfd150.jpg?v=1781096660","url":"https:\/\/homediyer.com\/de\/products\/brass-push-to-connect-pneumatic-bulkhead-union-fittings","provider":"HomeDIYer","version":"1.0","type":"link"}