{"product_id":"201-stainless-steel-pipe-fittings-female-socket-coupler-adapters","title":"201 Stainless Steel Pipe Fittings — Female Socket Coupler Adapters (1\/2\", 3\/4\", 1\")","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e201 Stainless Steel Female Socket Pipe Couplers — Reliable Connections for 1\/2\", 3\/4\" \u0026amp; 1\" Pipe\u003c\/h2\u003e\n\u003cp\u003eWhether you're repairing a leaking joint, extending a water line, or building out a plumbing system from scratch, finding a female socket pipe coupler that fits correctly and holds up over time is non-negotiable. Loose fittings, mismatched thread standards, and flimsy materials are the most common causes of callbacks and rework — and they cost time and money. These 201 stainless steel pipe fittings are built for DIYers, plumbers, and contractors who need a dependable, corrosion-resistant connection the first time.\u003c\/p\u003e\n\u003cp\u003eEach fitting is machined from 201 stainless steel and is available in three nominal pipe sizes — 1\/2\" (≈21.3 mm OD), 3\/4\" (≈26.7 mm OD), and 1\" (≈33.4 mm OD) — across five socket configurations: Hex socket (1\/2\"–2\"), Round socket (1\/2\"–2\"), Hex socket (3\/4\"–4\"), Round socket (3\/4\"–4\"), Round socket (1\"), and Reducer (1\" to 3\/4\"). Packing options include 1-piece, 3-piece, and 5-piece sets. Thread dimensions conform to standard pipe thread specifications; confirm your thread standard (NPT or BSP) before ordering.\u003c\/p\u003e\n\u003cp\u003eThese female socket coupler adapters are well-suited for residential and light commercial plumbing repairs, irrigation system assembly, compressed air line connections, and stainless steel pipe framework projects. The reducer variant is especially useful for transitioning between 1\" and 3\/4\" lines in water supply or fluid transfer systems without additional adapters.\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 Note:\u003c\/strong\u003e These fittings are designed for standard NPT\/BSP threaded pipe systems. Verify your pipe's nominal size and thread standard before ordering. The Reducer type connects 1\" pipe to 3\/4\" pipe only.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These 201 Stainless Steel Female Socket Pipe Couplers\u003c\/h2\u003e\n\u003cul class=\"hdiy-features\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMultiple Socket Configurations\u003c\/strong\u003e — Available in Hex, Round, and Reducer styles across 1\/2\", 3\/4\", and 1\" nominal sizes, covering the most common residential and light commercial pipe coupler adapter applications.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e201 Stainless Steel Construction\u003c\/strong\u003e — Resists rust and oxidation in mildly humid and wet environments, making these fittings suitable for indoor plumbing, irrigation lines, and light outdoor pipe connections.\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 Tightening\u003c\/strong\u003e — The Hex socket variants feature a six-sided outer body that accepts a standard pipe wrench or adjustable wrench, allowing controlled torque application for leak-free female socket connections.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eReducer Adapter Included as Option\u003c\/strong\u003e — The 1\" to 3\/4\" reducer fitting lets you transition between two common pipe sizes in a single fitting, eliminating the need for a separate bushing or step-down adapter in stainless steel pipe systems.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlexible Pack Quantities\u003c\/strong\u003e — Choose 1-piece, 3-piece, or 5-piece packs to match your project scope. Multi-pack options reduce per-unit cost for jobs requiring multiple stainless steel pipe fittings.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eStandard Thread Compatibility\u003c\/strong\u003e — Machined to fit standard NPT and BSP threaded pipe systems, which are the most widely used pipe thread standards in US plumbing, HVAC, and fluid transfer applications.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📐 Technical Specifications — 201 Stainless Steel Female Socket Pipe Fittings\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\u003e201 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Nominal Sizes\u003c\/th\u003e\n\u003ctd\u003e1\/2\" (≈21.3 mm OD), 3\/4\" (≈26.7 mm OD), 1\" (≈33.4 mm OD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSocket Types\u003c\/th\u003e\n\u003ctd\u003eHex, Round, Reducer (1\" to 3\/4\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eNPT \/ BSP (confirm before ordering)\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\u003eCorrosion Resistance\u003c\/th\u003e\n\u003ctd\u003eSuitable for indoor and light outdoor use; not recommended for saltwater or highly corrosive environments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePressure Rating\u003c\/th\u003e\n\u003ctd\u003eSee variant options — contact us to confirm for pressure-critical applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Quantities\u003c\/th\u003e\n\u003ctd\u003e1 pcs, 3 pcs, 5 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Pipe Systems\u003c\/th\u003e\n\u003ctd\u003eStandard threaded pipe (plumbing, irrigation, compressed air, fluid transfer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm\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\u003eSpec Confirmation:\u003c\/strong\u003e Wall thickness, exact thread pitch, and pressure ratings vary by size and configuration. If your application is pressure-critical or requires certified specs, please contact us before ordering.\u003c\/div\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right pipe fitting size?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the outer diameter (OD) of your existing pipe and match it to the nominal pipe size. For example, a 1\/2\" nominal pipe typically has an OD of about 0.840\" (21.3 mm), a 3\/4\" nominal pipe is about 1.050\" (26.7 mm), and a 1\" nominal pipe is about 1.315\" (33.4 mm). When in doubt, measure the pipe OD and consult a nominal pipe size (NPS) chart. Do not measure the inner diameter — nominal pipe sizes are based on OD conventions, not actual inner dimensions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the Hex and Round socket styles?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe Hex socket style has a six-sided outer body, which allows you to grip and tighten the fitting with a standard pipe wrench or adjustable wrench for a controlled, torque-applied connection. The Round socket style has a smooth cylindrical body, generally used where wrench access is limited or where a cleaner visual profile is preferred. Both styles function as female socket couplers — the difference is in the outer geometry and installation method.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these fittings be used outdoors or in wet environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e201 stainless steel generally offers good corrosion resistance for indoor plumbing, irrigation systems, and light outdoor applications in non-corrosive environments. It is not typically recommended for saltwater exposure, coastal environments, or direct contact with harsh chemicals. For those conditions, 304 or 316 stainless steel is generally a better choice. If you are unsure whether 201 SS is appropriate for your environment, contact us to confirm before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat thread standard do these female socket adapters use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese fittings are designed for standard NPT (National Pipe Taper) or BSP (British Standard Pipe) threaded connections — the two most common pipe thread standards used in US and international plumbing systems. NPT and BSP threads are not interchangeable, so confirm which standard your existing pipe system uses before ordering. If you are unsure, contact us with your pipe specifications and we can help confirm compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat pressure rating do these pipe couplers support?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e201 stainless steel pipe fittings are typically suitable for moderate-pressure applications in residential and light commercial plumbing. Actual pressure ratings depend on the nominal pipe size, wall thickness, thread engagement, and installation method. For pressure-critical systems — such as compressed air lines or high-pressure fluid transfer — contact us to confirm the specific rating for your chosen size and configuration before installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen should I use the Reducer fitting instead of a standard coupler?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eUse the Reducer fitting (1\" to 3\/4\") when you need to connect a 1\" pipe to a 3\/4\" pipe in the same run — for example, when transitioning from a main supply line to a branch line, or when adapting an existing 1\" system to accept 3\/4\" fixtures. It eliminates the need for a separate bushing or step-down adapter, simplifying the connection and reducing potential leak points.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many pieces come in each pack, and which should I order?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach listing is available in 1-piece, 3-piece, and 5-piece packs. For a single repair or connection point, the 1-piece pack is sufficient. For projects with multiple connection points — such as an irrigation manifold, a multi-branch plumbing run, or a framework build — the 3-piece or 5-piece packs offer a lower per-unit cost. Select your preferred quantity from the Packing Qty option above.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your type, size, and quantity above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"201 stainless steel \/ Hex【1\u00262\"】 \/ 1pcs","offer_id":52336743678226,"sku":"BEAR026690x1","price":8.55,"currency_code":"USD","in_stock":true},{"title":"201 stainless steel \/ Hex【1\u00262\"】 \/ 3pcs","offer_id":52336743710994,"sku":"BEAR026690x3","price":21.47,"currency_code":"USD","in_stock":true},{"title":"201 stainless steel \/ Hex【1\u00262\"】 \/ 5pcs","offer_id":52336743743762,"sku":"BEAR026690x5","price":34.39,"currency_code":"USD","in_stock":true},{"title":"201 stainless steel \/ Round【1\u00262\"】 \/ 1pcs","offer_id":52336743776530,"sku":"BEAR026691x1","price":7.82,"currency_code":"USD","in_stock":true},{"title":"201 stainless steel \/ Round【1\u00262\"】 \/ 3pcs","offer_id":52336743809298,"sku":"BEAR026691x3","price":19.52,"currency_code":"USD","in_stock":true},{"title":"201 stainless steel \/ Round【1\u00262\"】 \/ 5pcs","offer_id":52336743842066,"sku":"BEAR026691x5","price":31.13,"currency_code":"USD","in_stock":true},{"title":"201 stainless steel \/ Hex 【3\u00264\"】 \/ 1pcs","offer_id":52336743874834,"sku":"BEAR026692x1","price":13.04,"currency_code":"USD","in_stock":true},{"title":"201 stainless steel \/ Hex 【3\u00264\"】 \/ 3pcs","offer_id":52336743907602,"sku":"BEAR026692x3","price":35.07,"currency_code":"USD","in_stock":true},{"title":"201 stainless steel \/ Hex 【3\u00264\"】 \/ 5pcs","offer_id":52336743940370,"sku":"BEAR026692x5","price":56.97,"currency_code":"USD","in_stock":true},{"title":"201 stainless steel \/ Round【3\u00264\"】 \/ 1pcs","offer_id":52336743973138,"sku":"BEAR026693x1","price":10.95,"currency_code":"USD","in_stock":true},{"title":"201 stainless steel \/ Round【3\u00264\"】 \/ 3pcs","offer_id":52336744005906,"sku":"BEAR026693x3","price":28.55,"currency_code":"USD","in_stock":true},{"title":"201 stainless steel \/ Round【3\u00264\"】 \/ 5pcs","offer_id":52336744038674,"sku":"BEAR026693x5","price":46.23,"currency_code":"USD","in_stock":true},{"title":"201 stainless steel \/ Round【1\"】 \/ 1pcs","offer_id":52336744071442,"sku":"BEAR026695x1","price":14.54,"currency_code":"USD","in_stock":true},{"title":"201 stainless steel \/ Round【1\"】 \/ 3pcs","offer_id":52336744104210,"sku":"BEAR026695x3","price":39.51,"currency_code":"USD","in_stock":true},{"title":"201 stainless steel \/ Round【1\"】 \/ 5pcs","offer_id":52336744136978,"sku":"BEAR026695x5","price":64.4,"currency_code":"USD","in_stock":true},{"title":"201 stainless steel \/ Reducer【1\" to 3\u00264\"】 \/ 1pcs","offer_id":52336744169746,"sku":"BEAR026696x1","price":17.94,"currency_code":"USD","in_stock":true},{"title":"201 stainless steel \/ Reducer【1\" to 3\u00264\"】 \/ 3pcs","offer_id":52336744202514,"sku":"BEAR026696x3","price":49.63,"currency_code":"USD","in_stock":true},{"title":"201 stainless steel \/ Reducer【1\" to 3\u00264\"】 \/ 5pcs","offer_id":52336744235282,"sku":"BEAR026696x5","price":90.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-01_31303618-dd2b-45b5-8287-621b3a952de9.jpg?v=1781158696","url":"https:\/\/homediyer.com\/products\/201-stainless-steel-pipe-fittings-female-socket-coupler-adapters","provider":"HomeDIYer","version":"1.0","type":"link"}