{"product_id":"pneumatic-4mm-od-tube-m5-m6-male-straight-push-connect-air-fitting","title":"Pneumatic 4mm OD Tube x M5\/M6 Male Straight Push-to-Connect Air Fitting","description":"\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose between M5 and M6 thread size?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the thread size to your equipment port. M5 has a 5mm nominal thread diameter and is typically found on smaller pneumatic cylinders and solenoid valves. M6 (6mm thread diameter) is generally used on slightly larger ports. Check your equipment's port marking or measure the thread OD with calipers before ordering.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What tube outer diameter does this fitting accept?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This fitting is designed for 4mm OD (outer diameter) pneumatic tubing, which is approximately 5\/32 inch. It will not reliably seal with 3mm or 6mm OD tubing.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How much pressure can these fittings handle?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Push-to-connect pneumatic fittings of this type are generally rated for working pressures up to approximately 150 PSI (≈10 bar) in typical compressed-air applications. Consult your system specifications to confirm suitability.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can these fittings be used outdoors or in humid environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The fittings are typically constructed from nickel-plated brass or engineering-grade polymer bodies with NBR or polyurethane seals, which offer reasonable resistance to moisture. For prolonged outdoor or high-humidity exposure, verify the specific material of the variant you receive and consider additional sealing measures.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need thread tape or sealant when installing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"In most cases, applying PTFE thread tape (1–2 wraps) to the male threads before installation is recommended to ensure a leak-free seal, especially on metal-to-metal connections. The push-in tube side requires no additional sealant.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I release the tube from the fitting?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"To release the tube, depressurize the line first, then press the collet ring (the outer ring around the tube entry) inward while pulling the tube straight out. Avoid twisting the tube during removal to protect the collet teeth.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these fittings compatible with polyurethane (PU) and nylon (PA) tubing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Push-to-connect fittings of this style are generally compatible with standard 4mm OD pneumatic tubing materials including polyurethane (PU), nylon (PA), and polyethylene (PE). Silicone tubing is typically not recommended as it is too soft for reliable collet grip.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003e4mm Push-to-Connect Air Fittings — Instant, Tool-Free Pneumatic Tube Connections\u003c\/h2\u003e\n    \u003cp\u003eRouting compressed-air lines through tight spaces or retrofitting a pneumatic circuit shouldn't require special tools or complicated compression sleeves. These \u003cstrong\u003e4mm OD push-to-connect pneumatic fittings\u003c\/strong\u003e let hobbyists, automation technicians, and workshop builders make secure, leak-resistant tube connections in seconds — just push the tube in until it clicks and you're done.\u003c\/p\u003e\n    \u003cp\u003eEach fitting features a \u003cstrong\u003emale straight body\u003c\/strong\u003e with either an \u003cstrong\u003eM5 or M6 metric thread\u003c\/strong\u003e on one end and a push-in collet on the other, accepting standard \u003cstrong\u003e4mm OD (≈5\/32\") pneumatic tubing\u003c\/strong\u003e. Available in single units or economical 5-pack and 10-pack quantities so you can stock up for larger builds.\u003c\/p\u003e\n    \u003cp\u003eTypical applications include \u003cstrong\u003esmall pneumatic cylinder porting\u003c\/strong\u003e, \u003cstrong\u003esolenoid valve tube connections\u003c\/strong\u003e, air-line distribution manifolds, and DIY automation rigs where 4mm tubing and M5\/M6 threaded ports are standard. The straight male configuration is also widely used in \u003cstrong\u003eminiature air-circuit assembly\u003c\/strong\u003e and benchtop pneumatic testing setups.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003e🔵\u003c\/span\u003e\n    \u003cstrong\u003eCompatibility Note:\u003c\/strong\u003e Designed for \u003cstrong\u003e4mm OD pneumatic tubing\u003c\/strong\u003e (PU, PA, or PE) with \u003cstrong\u003eM5 or M6 metric male threads\u003c\/strong\u003e. Select your thread size from the variant options above. Not compatible with imperial BSP or NPT threaded ports without an adapter.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e✅ Key Features of These 4mm Push-to-Connect Pneumatic 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\u003eTool-Free Tube Insertion\u003c\/strong\u003e — The collet-style push-in mechanism grips 4mm OD tubing instantly; no wrenches, ferrules, or crimping tools required for the tube side.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMetric Male Thread Body\u003c\/strong\u003e — Available in M5 and M6 thread sizes to match the most common ports on pneumatic cylinders, solenoid valves, and manifold blocks used in compact automation.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eStraight-Through Flow Path\u003c\/strong\u003e — The male straight configuration delivers an unobstructed inline connection, minimizing pressure drop in low-flow compressed-air circuits.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eCollet Grip with Positive Lock\u003c\/strong\u003e — The internal collet teeth bite into the tube OD under pressure, creating a push-to-connect air line connection that resists accidental pull-out during normal operating pressures.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlexible Pack Sizes\u003c\/strong\u003e — Order a single fitting for a quick repair or choose the 5-pack or 10-pack to keep spares on hand for ongoing pneumatic circuit builds and maintenance.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏭\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eCompact Form Factor\u003c\/strong\u003e — The small body dimensions make these fittings well-suited for tight panel cutouts, miniature pneumatic assemblies, and space-constrained automation enclosures.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003e📐 Technical Specifications — Male Straight Push-to-Connect Pneumatic Fitting\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eTube OD\u003c\/th\u003e\n\u003ctd\u003e4mm (≈5\/32\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eThread Type\u003c\/th\u003e\n\u003ctd\u003eMetric male (M5 or M6 — see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eThread Pitch\u003c\/th\u003e\n\u003ctd\u003eM5 × 0.8mm \/ M6 × 1.0mm (standard metric coarse)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFitting Style\u003c\/th\u003e\n\u003ctd\u003eMale straight, push-to-connect (push-in collet)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eCompatible Tubing\u003c\/th\u003e\n\u003ctd\u003ePU, PA (nylon), PE — 4mm OD\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) — see variant specs to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBody Material\u003c\/th\u003e\n\u003ctd\u003eSee variant options \/ Contact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSeal Material\u003c\/th\u003e\n\u003ctd\u003eSee variant options \/ Contact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003e1 \/ 5 \/ 10 (select above)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eISO metric (not BSP or NPT)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-note\"\u003e\n    \u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e\n    \u003cstrong\u003eHeads up:\u003c\/strong\u003e Always depressurize the air line before inserting or removing tubing. Apply PTFE thread tape to the male threads before installation to ensure a leak-free seal.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-faq\"\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose between M5 and M6 thread size?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eMatch the thread size to your equipment port. M5 has a 5mm nominal thread diameter and is typically found on smaller pneumatic cylinders and solenoid valves. M6 (6mm thread diameter) is generally used on slightly larger ports. Check your equipment's port marking or measure the thread OD with calipers before ordering.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat tube outer diameter does this fitting accept?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThis fitting is designed for \u003cstrong\u003e4mm OD\u003c\/strong\u003e (outer diameter) pneumatic tubing, which is approximately \u003cstrong\u003e5\/32 inch\u003c\/strong\u003e. It will not reliably seal with 3mm or 6mm OD tubing.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow much pressure can these fittings handle?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003ePush-to-connect pneumatic fittings of this type are generally rated for working pressures up to approximately \u003cstrong\u003e150 PSI (≈10 bar)\u003c\/strong\u003e in typical compressed-air applications. Consult your system specifications to confirm suitability for your exact use case.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan these fittings be used outdoors or in humid environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThe fittings are typically constructed from nickel-plated brass or engineering-grade polymer bodies with NBR or polyurethane seals, which offer reasonable resistance to moisture. For prolonged outdoor or high-humidity exposure, verify the specific material of the variant you receive and consider additional sealing measures.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDo I need thread tape or sealant when installing?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eIn most cases, applying \u003cstrong\u003ePTFE thread tape\u003c\/strong\u003e (1–2 wraps) to the male threads before installation is recommended to ensure a leak-free seal, especially on metal-to-metal connections. The push-in tube side requires no additional sealant.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I release the tube from the fitting?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eTo release the tube, \u003cstrong\u003edepressurize the line first\u003c\/strong\u003e, then press the collet ring (the outer ring around the tube entry) inward while pulling the tube straight out. Avoid twisting the tube during removal to protect the collet teeth.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\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. Push-to-connect fittings of this style are generally compatible with standard 4mm OD pneumatic tubing materials including \u003cstrong\u003epolyurethane (PU), nylon (PA), and polyethylene (PE)\u003c\/strong\u003e. Silicone tubing is typically not recommended as it is too soft for reliable collet grip.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-cta\"\u003e\n    🛒 Select your \u003cstrong\u003esize and quantity\u003c\/strong\u003e above, then add to cart — ships from our US warehouse.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"M5 \/ 1","offer_id":52335987228946,"sku":"KFCBJT00846x1","price":1.35,"currency_code":"USD","in_stock":true},{"title":"M5 \/ 5","offer_id":52335987261714,"sku":"KFCBJT00846x5","price":2.92,"currency_code":"USD","in_stock":true},{"title":"M5 \/ 10","offer_id":52335987294482,"sku":"KFCBJT00846x10","price":4.35,"currency_code":"USD","in_stock":true},{"title":"M6 \/ 1","offer_id":52335987327250,"sku":"KFCBJT00847x1","price":1.84,"currency_code":"USD","in_stock":true},{"title":"M6 \/ 5","offer_id":52335987360018,"sku":"KFCBJT00847x5","price":2.92,"currency_code":"USD","in_stock":true},{"title":"M6 \/ 10","offer_id":52335987392786,"sku":"KFCBJT00847x10","price":4.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of6_a6f9bf02-2446-43d6-a9d9-caaf58114ae0.jpg?v=1781445722","url":"https:\/\/homediyer.com\/de\/products\/pneumatic-4mm-od-tube-m5-m6-male-straight-push-connect-air-fitting","provider":"HomeDIYer","version":"1.0","type":"link"}