{"product_id":"stainless-steel-female-male-npt-extension-pipe-nipple-half-inch","title":"1\/2\" Stainless Steel Female x Male NPT Extension Pipe Nipple | Barrel Nipple","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e1\/2\" Stainless Steel Female x Male NPT Extension Pipe Nipple — Extend or Reposition Any Pipe Run\u003c\/h2\u003e\n\u003cp\u003ePlumbers, HVAC technicians, and DIY homeowners often run into the same problem: a pipe end that's just a few inches too short, or a valve that needs to be repositioned without rerouting the entire line. Reaching for a generic galvanized nipple that rusts out within a season isn't the answer. These 1\/2\" stainless steel female x male NPT extension pipe nipples give you a corrosion-resistant, thread-matched solution that installs in minutes and holds up for years.\u003c\/p\u003e\n\u003cp\u003eEach extension nipple features a female NPT (internal) thread on one end and a male NPT (external) thread on the other, with a hex body for wrench grip. Material is stainless steel — a corrosion-resistant alloy widely used in plumbing, food processing, and industrial piping. Available in six lengths: 10mm (≈3\/8\"), 15mm (≈19\/32\"), 20mm (≈25\/32\"), 25mm (≈1\"), 30mm (≈1-3\/16\"), 40mm (≈1-9\/16\"), and 50mm (≈2\"). Order as a single piece or in multi-packs of 2, 3, 5, or 10. A 12mm wrench accessory is also available as an add-on variant.\u003c\/p\u003e\n\u003cp\u003eThese fittings are well-suited for extending water supply lines behind walls or under sinks, repositioning shutoff valves or pressure gauges in tight spaces, and connecting inline components in compressed air or irrigation manifold systems where a stainless steel female-to-male NPT pipe extension is required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔗\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e 1\/2\" NPT (National Pipe Taper) thread standard — female end accepts a 1\/2\" male NPT fitting; male end threads into a 1\/2\" female NPT port. Not compatible with BSP threads without an adapter. Always apply PTFE tape or pipe thread compound before assembly.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These Stainless Steel Female x Male NPT Extension Pipe Nipples\u003c\/h2\u003e\n\u003cul class=\"hdiy-features\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFemale × Male Thread Configuration\u003c\/strong\u003e — One female (internal) NPT end and one male (external) NPT end let you extend an existing pipe run or reposition a connection point without changing thread gender on either side of the joint — a configuration that standard hex nipples cannot provide.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eStainless Steel Construction\u003c\/strong\u003e — Resists rust, oxidation, and corrosion from water, mild chemicals, and outdoor exposure. A durable choice for both indoor plumbing and exterior installations where galvanized or brass fittings tend to corrode over time.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eSeven Length Options — 10mm to 50mm\u003c\/strong\u003e — Fine-grained length selection from 10mm (≈3\/8\") to 50mm (≈2\") lets you dial in the exact extension needed rather than improvising with longer fittings or extra couplings that add leak points to the system.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eHex Body for Wrench Grip\u003c\/strong\u003e — The machined hexagonal center section allows full torque application with a standard wrench, making installation and future removal straightforward in tight or hard-to-reach spaces.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlexible Multi-Pack Quantities\u003c\/strong\u003e — Available in 1, 2, 3, 5, or 10-piece packs. Buy a single piece for a one-off repair or stock up for a larger plumbing project or maintenance kit — per-unit cost decreases with larger quantities.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏭\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMachined NPT Threads for Consistent Engagement\u003c\/strong\u003e — Threads are cut to NPT specification for consistent engagement depth and reliable sealing across all length variants, reducing the risk of cross-threading or incomplete engagement that can cause leaks in pressurized systems.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"hdiy-note\"\u003e\n\u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e \u003cstrong\u003eNote:\u003c\/strong\u003e The \"Wrench (12mm)\" variant is a hand tool accessory, not a pipe nipple. If you need only the pipe fitting, select a length variant (10mm–50mm). Confirm your pipe thread standard is 1\/2\" NPT before ordering.\u003c\/div\u003e\n\u003ch2\u003e📐 Technical Specifications — Stainless Steel Female x Male NPT Extension Pipe Nipple\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eStainless Steel (304 grade typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eNPT (National Pipe Taper) — US standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNominal Pipe Size\u003c\/th\u003e\n\u003ctd\u003e1\/2\" NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConnection Type\u003c\/th\u003e\n\u003ctd\u003eFemale NPT (one end) × Male NPT (other end)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Lengths\u003c\/th\u003e\n\u003ctd\u003e10mm (≈3\/8\"), 15mm (≈19\/32\"), 20mm (≈25\/32\"), 25mm (≈1\"), 30mm (≈1-3\/16\"), 40mm (≈1-9\/16\"), 50mm (≈2\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Quantities\u003c\/th\u003e\n\u003ctd\u003e1 Pcs, 2 Pcs, 3 Pcs, 5 Pcs, 10 Pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFitting Style\u003c\/th\u003e\n\u003ctd\u003eExtension \/ Barrel Nipple with hex body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eMill \/ brushed stainless (natural)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTypical Working Pressure\u003c\/th\u003e\n\u003ctd\u003eGenerally up to 150 PSI for water\/air at ambient temperature; contact us to confirm for specific applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTemperature Range\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm for your specific fluid and pressure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Sealant\u003c\/th\u003e\n\u003ctd\u003ePTFE tape or liquid pipe thread compound (not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAccessory Variant\u003c\/th\u003e\n\u003ctd\u003eWrench (12mm) — hand tool add-on, not a pipe fitting\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\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 extension nipple length?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the gap between your existing female fitting and the male connection point you need to reach. The nipple length should bridge that gap with enough thread engagement on both ends — typically at least 3–4 full thread turns per end. Available lengths range from 10mm (≈3\/8\") to 50mm (≈2\"). If you need a longer extension, consider stacking two nipples with a coupling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the pressure rating of these extension nipples?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eStainless steel NPT extension nipples generally handle working pressures up to 150 PSI for water and air service at ambient temperature. Actual ratings depend on wall thickness, temperature, and the fluid being conveyed. For steam or high-pressure applications, please contact us to confirm suitability before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these nipples suitable for outdoor or corrosive environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Stainless steel offers good resistance to rust, oxidation, and many corrosive media, making it suitable for outdoor plumbing, irrigation systems, and light industrial environments. For highly chlorinated water or saltwater-immersion applications, 316 stainless steel is generally recommended over 304.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat thread standard do these fittings use — NPT or BSP?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese extension nipples use NPT (National Pipe Taper) threads, the standard for pipe fittings in the United States. The female end accepts a male NPT fitting and the male end threads into a female NPT port. They are not compatible with BSP (British Standard Pipe) threads without an adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need thread sealant with these fittings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. NPT tapered threads require sealant for a leak-free connection. PTFE (Teflon) tape or a liquid pipe thread compound is typically applied to the male threads before assembly. This applies to both the male end of the nipple and any male fitting you thread into the female end. Thread sealant is not included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between a female x male nipple and a standard hex nipple?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA standard hex nipple has male threads on both ends and is used to connect two female fittings. A female x male extension nipple has a female (internal) thread on one end and a male (external) thread on the other, allowing you to extend an existing male pipe end or reposition a connection point without changing the thread gender on either side of the joint.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the \"Wrench (12mm)\" variant and do I need it?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe Wrench (12mm) variant is a 12mm hand tool accessory sized to fit the hex body of these fittings, sold as a convenient add-on. It is not a pipe nipple. If you only need the pipe fitting, select one of the length variants (10mm through 50mm). If you don't already have a 12mm wrench in your toolkit, adding one makes installation easier in tight spaces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your length and quantity above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"10mm Long \/ 1 Pcs","offer_id":52336746103058,"sku":"LJHGLBZSJ026603x1","price":2.79,"currency_code":"USD","in_stock":true},{"title":"15mm Long \/ 1 Pcs","offer_id":52336746135826,"sku":"LJHGLBZSJ026604x1","price":2.92,"currency_code":"USD","in_stock":true},{"title":"20mm Long \/ 1 Pcs","offer_id":52336746168594,"sku":"LJHGLBZSJ026605x1","price":3.47,"currency_code":"USD","in_stock":true},{"title":"25mm Long \/ 1 Pcs","offer_id":52336746201362,"sku":"LJHGLBZSJ026606x1","price":4.28,"currency_code":"USD","in_stock":true},{"title":"30mm Long \/ 1 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