{"product_id":"1-8-npt-heat-set-insert","title":"1\/8\" NPT Heat Set Insert for 3D Printing – Brass NPTF Pipe Thread Insert","description":"\u003cp\u003eReal pipe threads for your 3D prints.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eTapping NPT threads straight into plastic gives you weak, leak-prone threads that strip the second time you tighten a fitting. This brass heat set insert melts into your print and gives you a 1\/8-27 NPTF thread that holds up to wrenching, reassembly, and real-world use.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eBuilt for boost and vacuum ports, temperature and pressure sensor bungs, gauge lines, and air or fluid fittings in printed intakes, manifolds, enclosures, and fixtures.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eWhy this insert?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eAnti-rotation double-D flange: flats on the flange resist spinning when you tighten a fitting into the insert.\u003cbr\u003eTwo helical knurl bands: resist both pull-out and torque-out.\u003cbr\u003eSolid brass: won’t corrode or gall like steel threads in plastic.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThread 1\/8-27 NPTF\u003cbr\u003eRecommended hole 0.475\" (12.07 mm) diameter, 0.55\" minimum depth\u003cbr\u003eOverall length 0.57\"\u003cbr\u003eBody length (below flange) 0.50\"\u003cbr\u003eKnurl OD 0.51\"\u003cbr\u003ePilot OD 0.47\"\u003cbr\u003eFlange 0.55\" diameter, 0.50\" across flats, 0.07\" thick\u003cbr\u003eMaterial [Brass alloy]\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eDesigning the hole\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eModel a straight 0.475\" (12.07 mm) hole, at least 0.55\" deep, so displaced plastic has room below the insert.\u003cbr\u003eKeep at least [0.125\"] of wall around the hole.\u003cbr\u003eFor a flush finish, add a 0.07\"-deep counterbore matching the flange.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eInstalling\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eHeat the insert to roughly your filament’s printing temperature using a large flat soldering tip or a heat-set press.\u003cbr\u003ePush it in straight until the flange is flush. Don’t twist.\u003cbr\u003eLet it cool completely before threading in a fitting.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eSealing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eMost fittings are standard NPT, not NPTF, so use PTFE tape or thread sealant on the fitting.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eTested in: [PETG, ABS, ASA, PA-CF]\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cem\u003eQ: Will a regular soldering iron tip work?\u003c\/em\u003e\u003cbr\u003eA: Not well. Standard tips are sized for M3 and M4 inserts. Use a large flat tip or a heat-set press\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cem\u003eQ: Can I use it in PLA?\u003c\/em\u003e\u003cbr\u003eA: Yes, with care. PLA softens at relatively low temperatures, so avoid hot under-hood locations.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cem\u003eQ: Is the bore a through hole?\u003c\/em\u003e\u003cbr\u003eYes. Your printed passage should line up with the insert’s bore.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cem\u003eQ: Does it work with BSPT fittings?\u003c\/em\u003e\u003cbr\u003eNo. 1\/8\" BSPT has a different thread pitch (28 TPI) and angle. Use NPT fittings only.\u003c\/p\u003e","brand":"SVT Design \u0026 Fab","offers":[{"title":"1 Pack","offer_id":67946958749969,"sku":"SVT-UNIV-18F-HSI-1","price":15.0,"currency_code":"USD","in_stock":true},{"title":"3 Pack","offer_id":67946958782737,"sku":"SVT-UNIV-18F-HSI-3","price":40.0,"currency_code":"USD","in_stock":true},{"title":"5 Pack","offer_id":67946958815505,"sku":"SVT-UNIV-18F-HSI-5","price":60.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/3141\/4289\/files\/1_8_NPT_heat_set_insert.jpg?v=1793633174","url":"https:\/\/svtdesignfab.com\/products\/1-8-npt-heat-set-insert","provider":"SVT Design \u0026 Fab","version":"1.0","type":"link"}