{"product_id":"allen-socket-pipe-plugs-pt-npt-1-16-to-2","title":"Male Allen Socket Pipe Plugs – 1\/16\" to 2\" PT \u0026 NPT Threads, 304 Stainless Steel End Caps","description":"\u003cstyle\u003e\n  .hdiy-product-section {\n    max-width: 100%;\n    margin: 0;\n    padding: 0;\n    box-sizing: border-box;\n  }\n  .hdiy-product-section * {\n    box-sizing: border-box;\n  }\n  .hdiy-heading {\n    font-size: 1.75rem;\n    font-weight: 600;\n    margin: 1.5rem 0 0.75rem 0;\n    padding-bottom: 0.5rem;\n    border-bottom: 2px solid #e2e2e2;\n  }\n  .hdiy-subheading {\n    font-size: 1.25rem;\n    font-weight: 600;\n    margin: 1.25rem 0 0.75rem 0;\n  }\n  .hdiy-paragraph {\n    margin: 0 0 1rem 0;\n    line-height: 1.5;\n  }\n  .hdiy-feature-list {\n    list-style: disc;\n    margin: 0 0 1.5rem 1.5rem;\n    padding: 0;\n  }\n  .hdiy-feature-list li {\n    margin-bottom: 0.5rem;\n    line-height: 1.4;\n    padding-left: 0;\n  }\n  .hdiy-table-wrapper {\n    overflow-x: auto;\n    margin: 1rem 0 1.5rem 0;\n  }\n  .hdiy-specs-table {\n    width: 100%;\n    border-collapse: collapse;\n    font-size: 0.9rem;\n    min-width: 300px;\n  }\n  .hdiy-specs-table th,\n  .hdiy-specs-table td {\n    border: 1px solid #ddd;\n    padding: 0.6rem 0.8rem;\n    text-align: left;\n    vertical-align: top;\n  }\n  .hdiy-specs-table th {\n    background-color: #f5f5f5;\n    font-weight: 600;\n    width: 35%;\n  }\n  .hdiy-faq-item {\n    margin-bottom: 1.25rem;\n  }\n  .hdiy-faq-question {\n    font-weight: 600;\n    margin: 0 0 0.25rem 0;\n    font-size: 1rem;\n  }\n  .hdiy-faq-answer {\n    margin: 0 0 0.5rem 0;\n    line-height: 1.5;\n  }\n  @media (max-width: 480px) {\n    .hdiy-specs-table th,\n    .hdiy-specs-table td {\n      padding: 0.5rem;\n    }\n    .hdiy-feature-list {\n      margin-left: 1.2rem;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"hdiy-product-section\"\u003e\n\u003c!-- Overview --\u003e\n\u003ch2 class=\"hdiy-heading\"\u003e🔩 Male Allen Socket Pipe Plugs – 1\/16\" to 2\" PT \u0026amp; NPT Threaded End Caps (304 Stainless Steel)\u003c\/h2\u003e\n\u003cp class=\"hdiy-paragraph\"\u003eIf you work with hydraulic lines, air compressors, fuel systems, or any pipe fitting that needs a secure seal, you know the frustration of finding the right plug. These \u003cstrong\u003emale allen socket pipe plugs\u003c\/strong\u003e are made from A2 304 stainless steel – tough, rust‑resistant, and ready for both PT (British taper) and NPT (American taper) threads. Sizes run from tiny 1\/16\" up to 2\", so you can cap off unused ports, test pressure points, or seal threaded holes permanently. The internal hex (Allen) drive lets you tighten them flush or recessed with a standard hex key, no bulky wrench needed. Great for industrial machinery, plumbing prototypes, automotive work, or just capping a water line in your shop.\u003c\/p\u003e\n\u003c!-- Features --\u003e\n\u003ch2 class=\"hdiy-heading\"\u003e✨ Why These Allen Socket Pipe Plugs Belong in Your Kit\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e🔧 Male thread design with Allen socket drive\u003c\/strong\u003e – No exposed hex head. Use a standard hex key to tighten the plug flush with or below the surface. Clean, professional finish.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e🛡️ A2 304 stainless steel – corrosion resistant\u003c\/strong\u003e – Won’t rust like carbon steel. Perfect for damp environments, outdoor equipment, or fluid handling systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e📏 Two thread standards: PT \u0026amp; NPT (1\/16\" to 2\")\u003c\/strong\u003e – PT (British Standard Pipe Taper) and NPT (National Pipe Taper) are both tapered threads for pressure‑tight seals. Choose the standard your system uses.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e🔩 Full size range – 10 sizes per standard\u003c\/strong\u003e – Available: 1\/16\", 1\/8\", 1\/4\", 3\/8\", 1\/2\", 3\/4\", 1\", 1-1\/4\", 1-1\/2\", 2\". One source for almost any pipe plug you need.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e🧪 Tapered threads seal without extra sealant (but sealant helps)\u003c\/strong\u003e – The taper creates a metal‑to‑metal interference fit. For high pressure or critical applications, use PTFE tape or pipe dope.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e🏭 Wide industrial \u0026amp; DIY application\u003c\/strong\u003e – Use on hydraulic manifolds, air compressor ports, fuel tanks, test gauges, water lines, or as a stop for unused NPT\/PT fittings.\u003c\/p\u003e\n\u003c!-- Specifications Table --\u003e\n\u003ch2 class=\"hdiy-heading\"\u003e📏 Technical Specifications – Male Allen Socket Pipe Plugs\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrapper\"\u003e\n\u003ctable class=\"hdiy-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eMale Allen socket pipe plug \/ throat screw \/ end cap stopper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eA2 304 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Standards Available\u003c\/th\u003e\n\u003ctd\u003ePT (British Standard Pipe Taper) and NPT (National Pipe Taper)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize Range (both PT \u0026amp; NPT)\u003c\/th\u003e\n\u003ctd\u003e1\/16\", 1\/8\", 1\/4\", 3\/8\", 1\/2\", 3\/4\", 1\", 1-1\/4\", 1-1\/2\", 2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDrive Type\u003c\/th\u003e\n\u003ctd\u003eInternal Hex (Allen socket)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHead Style\u003c\/th\u003e\n\u003ctd\u003eCountersunk \/ flush‑fitting (no external hex)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSealing Mechanism\u003c\/th\u003e\n\u003ctd\u003eTapered threads for pressure‑tight seal (PTFE tape recommended for high pressure)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTypical Applications\u003c\/th\u003e\n\u003ctd\u003eHydraulic systems, pneumatic lines, fuel systems, water pipes, test ports, manifold blanking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- FAQ --\u003e\n\u003ch2 class=\"hdiy-heading\"\u003e❓ Frequently Asked Questions – Allen Socket Pipe Plugs\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-faq-item\"\u003e\n\u003cdiv class=\"hdiy-faq-question\"\u003e🔧 What’s the difference between PT and NPT threads? Can I use them interchangeably?\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq-answer\"\u003eBoth are tapered pipe threads, but they have different thread angles and pitch standards. PT (BSPT) has a 55° thread angle; NPT has a 60° angle. They are NOT interchangeable – using an NPT plug in a PT port will leak or damage the threads. Always match the plug standard to your fitting. Check your system documentation or use a thread gauge.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq-item\"\u003e\n\u003cdiv class=\"hdiy-faq-question\"\u003e🛠️ Do I need to use PTFE tape or pipe dope with these plugs?\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq-answer\"\u003eThe tapered threads alone can seal low‑pressure air or water (e.g., under 100 psi). For higher pressures, fuel, oil, or critical systems, always use PTFE tape (wrap 3‑5 turns) or a quality pipe thread sealant. The Allen socket allows you to tighten the plug snugly without damaging the hex recess. Over‑tightening can crack the fitting, so go hand‑tight plus 1\/4 turn.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq-item\"\u003e\n\u003cdiv class=\"hdiy-faq-question\"\u003e🌊 Are these 304 stainless plugs suitable for saltwater or marine use?\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq-answer\"\u003e304 stainless has good corrosion resistance but can pit in prolonged saltwater exposure. For marine applications (boat fittings, dock lines, saltwater pumps), we recommend upgrading to 316 stainless. For freshwater, industrial fluid, or outdoor (non‑salt) environments, 304 is perfectly fine and far better than plated steel.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq-item\"\u003e\n\u003cdiv class=\"hdiy-faq-question\"\u003e📏 How do I measure the thread size I need?\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq-answer\"\u003eMeasure the nominal inside diameter of the female pipe port. For example, a 1\/4\" NPT port measures about 0.54\" outer diameter of the threads. The easiest way: match the plug to the fitting size stamped on your existing hardware. If unsure, use a thread gauge or contact us – we can help identify the correct size and standard (PT vs NPT).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq-item\"\u003e\n\u003cdiv class=\"hdiy-faq-question\"\u003e⚙️ Can I install these plugs flush with the surface?\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq-answer\"\u003eYes. The design has no external hex head – just an Allen socket. You can drive the plug deep enough so the top sits flush or slightly below the surface of the mating part. This is ideal for manifolds, valve bodies, or any application where protruding hardware would interfere.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"PT 1\/16 \/ 1 PCS","offer_id":52253488152850,"sku":"AdaahBRTQJD013398x1","price":4.61,"currency_code":"USD","in_stock":true},{"title":"PT 1\/8 \/ 1 PCS","offer_id":52253488185618,"sku":"AdaahBRTQJD013399x1","price":4.61,"currency_code":"USD","in_stock":true},{"title":"PT 1\/4 \/ 1 PCS","offer_id":52253488218386,"sku":"AdaahBRTQJD013438x1","price":4.64,"currency_code":"USD","in_stock":true},{"title":"PT 3\/8 \/ 1 PCS","offer_id":52253488251154,"sku":"AdaahBRTQJD013400x1","price":5.29,"currency_code":"USD","in_stock":true},{"title":"PT 1\/2 \/ 1 PCS","offer_id":52253488283922,"sku":"AdaahBRTQJD013401x1","price":6.3,"currency_code":"USD","in_stock":true},{"title":"PT 3\/4 \/ 1 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