{"product_id":"prima-stainless-steel-qc-plug-3-8fpt","title":"Prima Stainless Steel QC Plug 3\/8FPT","description":"\u003c!-- =========================================================\n     MTM PRIMA 56.0081 — 3\/8\" FPT Plug — Detail Division\n     Visual system: \"Inspection Report\" (namespace: .pr-)\n     ========================================================= --\u003e\n\u003cstyle\u003e\n@import url('https:\/\/fonts.googleapis.com\/css2?family=Barlow+Condensed:wght@500;600;700\u0026family=Barlow:wght@400;500;600\u0026family=IBM+Plex+Mono:wght@400;500\u0026display=swap');\n\n.pr-wrap{\n  --pr-steel-900:#1d2125;\n  --pr-steel-700:#3d444b;\n  --pr-steel-500:#6b747d;\n  --pr-steel-300:#b9c0c6;\n  --pr-steel-150:#dfe3e6;\n  --pr-steel-50:#f3f5f6;\n  --pr-paper:#fbfcfc;\n  --pr-dykem:#1f4fa8;\n  --pr-dykem-tint:#e8eef9;\n  --pr-gold:#ffb612;\n  --pr-black:#111;\n  --pr-red:#b3261e;\n  --pr-red-tint:#fbeceb;\n  --pr-cond:'Barlow Condensed','Arial Narrow',Arial,sans-serif;\n  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var(--pr-steel-300);display:flex;align-items:center}\n.pr-tb div:nth-last-child(-n+2){border-bottom:0}\n\n\/* ---- Tolerance chips (feature-control-frame style) ---- *\/\n.pr-chips{display:flex;flex-wrap:wrap;gap:12px;margin:18px 0 4px}\n.pr-fcf{display:inline-flex;border:2px solid var(--pr-steel-900);font-family:var(--pr-mono);font-size:.85rem;background:#fff}\n.pr-fcf span{padding:6px 10px;border-right:2px solid var(--pr-steel-900)}\n.pr-fcf span:last-child{border-right:0}\n.pr-fcf .pr-sym{background:var(--pr-dykem);color:#fff;font-weight:500}\n\n\/* ---- Problem \/ answer ---- *\/\n.pr-two{display:grid;grid-template-columns:1fr 1fr;gap:24px}\n.pr-callout{border-left:4px solid var(--pr-dykem);background:var(--pr-dykem-tint);padding:16px 18px}\n.pr-callout p:last-child{margin:0}\n\n\/* ---- Spec table ---- *\/\n.pr-spec{width:100%;border-collapse:collapse;font-size:.95rem}\n.pr-spec th,.pr-spec td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--pr-steel-150);vertical-align:top}\n.pr-spec th{width:34%;font-family:var(--pr-cond);text-transform:uppercase;letter-spacing:.06em;font-weight:600;color:var(--pr-steel-700)}\n.pr-spec td .pr-val{font-family:var(--pr-mono);color:var(--pr-dykem);display:block;margin-bottom:2px}\n\n\/* ---- Comparison ---- *\/\n.pr-cmp{width:100%;border-collapse:collapse;font-size:.93rem}\n.pr-cmp th,.pr-cmp td{padding:11px 12px;border:1px solid var(--pr-steel-300);vertical-align:top}\n.pr-cmp thead th{font-family:var(--pr-cond);text-transform:uppercase;letter-spacing:.07em;background:var(--pr-steel-900);color:#fff;text-align:left}\n.pr-cmp thead th:last-child{background:var(--pr-dykem)}\n.pr-cmp tbody th{font-family:var(--pr-cond);text-transform:uppercase;letter-spacing:.06em;font-weight:600;background:var(--pr-steel-50);width:20%;text-align:left}\n.pr-cmp td:last-child{background:#fff}\n\n\/* ---- Section view ---- *\/\n.pr-fig{background:#fff;border:1px solid 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(max-width:640px){.pr-dwg-foot{grid-template-columns:1fr}.pr-dwg-notes{border-right:0;border-bottom:2px solid var(--pr-steel-900)}}\n\n.pr-sec .pr-dwg{margin:0;max-width:none}\n.pr-intro{font-size:1.02rem}\n.pr-intro p:last-child{margin:0}\n.pr-fit{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--pr-steel-300);background:#fff;margin-top:4px}\n.pr-fit div{padding:14px 16px;border-right:1px solid var(--pr-steel-300)}\n.pr-fit div:last-child{border-right:0}\n.pr-fit p{margin:0;font-size:.93rem}\n@media (max-width:720px){.pr-fit{grid-template-columns:1fr}.pr-fit div{border-right:0;border-bottom:1px solid var(--pr-steel-300)}.pr-fit div:last-child{border-bottom:0}}\n\u003c\/style\u003e\n\u003cdiv class=\"pr-wrap\"\u003e\n\u003c!-- TITLE BLOCK --\u003e\n\u003cdiv class=\"pr-head\"\u003e\n\u003cdiv class=\"pr-head-main\"\u003e\n\u003cspan class=\"pr-label\"\u003eDetail Division · Inspection Report · 56.0081\u003c\/span\u003e\n\u003ch1\u003eMTM PRIMA 3\/8\" FPT \u003cspan\u003ePlug\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp class=\"pr-lead\"\u003eUsed on the end of your 3\/8\" hose threads. A 303 stainless quick-connect plug with 3\/8\" female NPT threads, machined in the USA to ±0.005\" (127 µm). It threads onto any 3\/8\" male NPT end and snaps into a 3\/8\" QC coupler, landing its sealing nose in the same spot on the o-ring every time.\u003c\/p\u003e\n\u003cdiv class=\"pr-chips\"\u003e\n\u003cspan class=\"pr-fcf\"\u003e\u003cspan class=\"pr-sym\"\u003eLINEAR\u003c\/span\u003e\u003cspan\u003e±0.005\"\u003c\/span\u003e\u003cspan\u003e127 µm\u003c\/span\u003e\u003c\/span\u003e \u003cspan class=\"pr-fcf\"\u003e\u003cspan class=\"pr-sym\"\u003eANGULAR\u003c\/span\u003e\u003cspan\u003e±1°\u003c\/span\u003e\u003cspan\u003eworking surfaces\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pr-tb\"\u003e\n\u003cdiv\u003ePart no.\u003c\/div\u003e\n\u003cdiv\u003e56.0081\u003c\/div\u003e\n\u003cdiv\u003eType\u003c\/div\u003e\n\u003cdiv\u003ePlug (male QC)\u003c\/div\u003e\n\u003cdiv\u003eThread\u003c\/div\u003e\n\u003cdiv\u003e3\/8\"-18 NPT female\u003c\/div\u003e\n\u003cdiv\u003eMaterial\u003c\/div\u003e\n\u003cdiv\u003e303 stainless steel\u003c\/div\u003e\n\u003cdiv\u003eSteel origin\u003c\/div\u003e\n\u003cdiv\u003ePittsburgh, PA, USA\u003c\/div\u003e\n\u003cdiv\u003eProcess\u003c\/div\u003e\n\u003cdiv\u003e100% machined, USA\u003c\/div\u003e\n\u003cdiv\u003eSeal\u003c\/div\u003e\n\u003cdiv\u003eNose mates coupler o-ring\u003c\/div\u003e\n\u003cdiv\u003eInspection\u003c\/div\u003e\n\u003cdiv\u003eDigital comparator\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- INTRO --\u003e\n\u003cdiv class=\"pr-sec pr-intro\"\u003e\n\u003cspan class=\"pr-label\"\u003e01 · Why PRIMA\u003c\/span\u003e\n\u003ch2\u003eBuilt to be the last one you buy\u003c\/h2\u003e\n\u003cp\u003eMost pressure washer fittings are made to a price. PRIMA is made to a spec. American-sourced 303 stainless, the precision machining grade, is cut in the USA to ±0.005\" and ±1°, deburred, washed, and checked on a digital comparator before it ships.\u003c\/p\u003e\n\u003cp\u003eThat engineering shows up in your hand, in the fit, and in the price. You're paying for a fitting that seals the same way on the thousandth connection as it did on the first, and one you shouldn't have to replace.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- DRAWING --\u003e\n\u003cdiv class=\"pr-sec\"\u003e\n\u003cspan class=\"pr-label\"\u003e02 · Drawing\u003c\/span\u003e\n\u003ch2\u003eAnatomy of the fpt plug\u003c\/h2\u003e\n\u003cdiv class=\"pr-dwg\"\u003e\n\u003cdiv class=\"pr-dwg-sheet\"\u003e\u003csvg viewbox=\"0 0 760 372\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" role=\"img\"\u003e\n\u003cdefs\u003e\u003cmarker id=\"pr0081-d\" viewbox=\"0 0 10 10\" refx=\"5\" refy=\"5\" markerwidth=\"5\" markerheight=\"5\"\u003e\u003ccircle cx=\"5\" cy=\"5\" r=\"4\" fill=\"#1f4fa8\"\u003e\u003c\/circle\u003e\u003c\/marker\u003e\u003c\/defs\u003e\u003cline x1=\"128\" y1=\"170\" x2=\"462\" y2=\"170\" stroke=\"#1f4fa8\" stroke-width=\"1\" stroke-dasharray=\"16 4 3 4\"\u003e\u003c\/line\u003e\u003cpath d=\"M150 144 L158 136 H190 L194 142 H202 L206 136 H300 V204 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fill=\"#1d2125\"\u003eSEALING NOSE — LANDS ON COUPLER O-RING\u003c\/text\u003e\u003cpolyline points=\"430,200 490,300 500,300\" fill=\"none\" stroke=\"#1f4fa8\" stroke-width=\"1\" marker-start=\"url(#pr0081-d)\"\u003e\u003c\/polyline\u003e\u003ctext x=\"470\" y=\"320\" font-family=\"IBM Plex Mono, monospace\" font-size=\"11.5\" fill=\"#1d2125\"\u003e3\/8\"-18 NPT · FEMALE\u003c\/text\u003e\u003ctext x=\"470\" y=\"336\" font-family=\"IBM Plex Mono, monospace\" font-size=\"10.5\" fill=\"#6b747d\"\u003eATTACHES TO MALE-THREADED END\u003c\/text\u003e\u003ctext x=\"295\" y=\"360\" font-family=\"Barlow Condensed, Arial Narrow, sans-serif\" font-size=\"14\" font-weight=\"600\" letter-spacing=\"1.5\" fill=\"#1d2125\" text-anchor=\"middle\"\u003eVIEW A — ELEVATION\u003c\/text\u003e\u003cline x1=\"558\" y1=\"170\" x2=\"722\" y2=\"170\" stroke=\"#1f4fa8\" stroke-width=\"1\" stroke-dasharray=\"16 4 3 4\"\u003e\u003c\/line\u003e\u003cline x1=\"640\" y1=\"88\" x2=\"640\" y2=\"252\" stroke=\"#1f4fa8\" stroke-width=\"1\" stroke-dasharray=\"16 4 3 4\"\u003e\u003c\/line\u003e\u003cpolygon points=\"706.0,170.0 673.0,227.2 607.0,227.2 574.0,170.0 607.0,112.8 673.0,112.8\" fill=\"#fbfcfc\" stroke=\"#1d2125\" stroke-width=\"2\"\u003e\u003c\/polygon\u003e\u003ccircle cx=\"640\" cy=\"170\" r=\"34\" fill=\"#fbfcfc\" stroke=\"#1d2125\" stroke-width=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"640\" cy=\"170\" r=\"28\" fill=\"none\" stroke=\"#1d2125\" stroke-width=\"1\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"640\" cy=\"170\" r=\"14\" fill=\"#fbfcfc\" stroke=\"#1d2125\" stroke-width=\"2\"\u003e\u003c\/circle\u003e\u003ctext x=\"640\" y=\"276\" font-family=\"Barlow Condensed, Arial Narrow, sans-serif\" font-size=\"14\" font-weight=\"600\" letter-spacing=\"1.5\" fill=\"#1d2125\" text-anchor=\"middle\"\u003eVIEW B — NOSE END\u003c\/text\u003e\u003ctext x=\"640\" y=\"292\" font-family=\"IBM Plex Mono, monospace\" font-size=\"10.5\" fill=\"#6b747d\" text-anchor=\"middle\"\u003eFITS 3\/8\" QC COUPLER\u003c\/text\u003e\n    \u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"pr-dwg-foot\"\u003e\n\u003cdiv class=\"pr-dwg-notes\"\u003e\n\u003cb\u003eNOTES\u003c\/b\u003e\n\u003col\u003e\n\u003cli\u003eMaterial: 303 stainless steel, Pittsburgh, PA.\u003c\/li\u003e\n\u003cli\u003eSealing nose mates with the coupler's EPDM o-ring.\u003c\/li\u003e\n\u003cli\u003eTolerance unless noted: ±0.005\" (127 µm) linear, ±1° angular.\u003c\/li\u003e\n\u003cli\u003eAll edges deburred and beveled.\u003c\/li\u003e\n\u003cli\u003eSeal with PTFE tape or thread sealant on mating male threads.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pr-dwg-tb\"\u003e\n\u003cdiv\u003ePart no.\u003c\/div\u003e\n\u003cdiv class=\"pr-pn\"\u003e56.0081\u003c\/div\u003e\n\u003cdiv\u003eDesc.\u003c\/div\u003e\n\u003cdiv\u003e3\/8\" FPT plug\u003c\/div\u003e\n\u003cdiv\u003eLine\u003c\/div\u003e\n\u003cdiv\u003eMTM PRIMA\u003c\/div\u003e\n\u003cdiv\u003eScale\u003c\/div\u003e\n\u003cdiv\u003eNTS\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- FIT --\u003e\n\u003cdiv class=\"pr-sec\"\u003e\n\u003cspan class=\"pr-label\"\u003e03 · Where it goes\u003c\/span\u003e\n\u003ch2\u003eHow it connects\u003c\/h2\u003e\n\u003cdiv class=\"pr-fit\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"pr-label\"\u003eThreaded end\u003c\/span\u003e\n\u003cp\u003eAny 3\/8\" male NPT end: a hose end, a gun inlet, or an accessory with male threads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"pr-label\"\u003eQuick-connect end\u003c\/span\u003e\n\u003cp\u003eA 3\/8\" QC coupler. Pair it with a PRIMA coupler for the full tolerance benefit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- COMPARISON --\u003e\n\u003cdiv class=\"pr-sec\"\u003e\n\u003cspan class=\"pr-label\"\u003e04 · Out of the pack\u003c\/span\u003e\n\u003ch2\u003eWhat you'll actually notice\u003c\/h2\u003e\n\u003ctable class=\"pr-cmp\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003eStandard fitting\u003c\/th\u003e\n\u003cth\u003ePRIMA\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eIn hand\u003c\/th\u003e\n\u003ctd\u003eSharp, angular, coarse edges\u003c\/td\u003e\n\u003ctd\u003eBeveled and smooth. It almost feels soft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEngagement\u003c\/th\u003e\n\u003ctd\u003eLoose, with some wobble in the union\u003c\/td\u003e\n\u003ctd\u003eFirm and positive. It takes deliberate force to connect and release, with no slop once seated.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeal\u003c\/th\u003e\n\u003ctd\u003ePlug position varies, and water can work around the o-ring\u003c\/td\u003e\n\u003ctd\u003eThe plug nose lands in the same spot on the o-ring every time\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCorrosion\u003c\/th\u003e\n\u003ctd\u003eDepends on alloy; often brass or unspecified stainless\u003c\/td\u003e\n\u003ctd\u003e300-series stainless. Excellent in water and detailing chemistry.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- SECTION VIEW --\u003e\n\u003cdiv class=\"pr-sec\"\u003e\n\u003cspan class=\"pr-label\"\u003e05 · Section A–A\u003c\/span\u003e\n\u003ch2\u003eWhy the seal is repeatable\u003c\/h2\u003e\n\u003cdiv class=\"pr-fig\"\u003e\n\u003csvg viewbox=\"0 0 760 260\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" role=\"img\"\u003e\n        \u003cdefs\u003e\n          \u003cpattern id=\"pr-hatch\" width=\"8\" height=\"8\" patternunits=\"userSpaceOnUse\" patterntransform=\"rotate(45)\"\u003e\n            \u003cline x1=\"0\" y1=\"0\" x2=\"0\" y2=\"8\" stroke=\"#6b747d\" stroke-width=\"1.2\"\u003e\u003c\/line\u003e\n          \u003c\/pattern\u003e\n          \u003cpattern id=\"pr-hatch2\" width=\"8\" height=\"8\" patternunits=\"userSpaceOnUse\" patterntransform=\"rotate(-45)\"\u003e\n            \u003cline x1=\"0\" y1=\"0\" x2=\"0\" y2=\"8\" stroke=\"#6b747d\" stroke-width=\"1.2\"\u003e\u003c\/line\u003e\n          \u003c\/pattern\u003e\n        \u003c\/defs\u003e\n        \n        \u003cline x1=\"40\" y1=\"130\" x2=\"720\" y2=\"130\" stroke=\"#1f4fa8\" stroke-width=\"1\" stroke-dasharray=\"18 5 3 5\"\u003e\u003c\/line\u003e\n        \n        \u003cpath d=\"M330 52 H620 V92 H440 L430 100 H330 Z\" fill=\"url(#pr-hatch)\" stroke=\"#1d2125\" stroke-width=\"2\"\u003e\u003c\/path\u003e\n        \u003cpath d=\"M330 208 H620 V168 H440 L430 160 H330 Z\" fill=\"url(#pr-hatch)\" stroke=\"#1d2125\" stroke-width=\"2\"\u003e\u003c\/path\u003e\n        \n        \u003crect x=\"452\" y=\"92\" width=\"18\" height=\"10\" fill=\"#fbfcfc\" stroke=\"#1d2125\" stroke-width=\"1.5\"\u003e\u003c\/rect\u003e\n        \u003crect x=\"452\" y=\"158\" width=\"18\" height=\"10\" fill=\"#fbfcfc\" stroke=\"#1d2125\" stroke-width=\"1.5\"\u003e\u003c\/rect\u003e\n        \u003ccircle cx=\"461\" cy=\"99\" r=\"7\" fill=\"#1d2125\"\u003e\u003c\/circle\u003e\n        \u003ccircle cx=\"461\" cy=\"161\" r=\"7\" fill=\"#1d2125\"\u003e\u003c\/circle\u003e\n        \n        \u003cpath d=\"M110 100 H300 V104 H440 L472 108 V152 L440 156 H300 V160 H110 Z\" fill=\"url(#pr-hatch2)\" stroke=\"#1d2125\" stroke-width=\"2\"\u003e\u003c\/path\u003e\n        \n        \u003crect x=\"110\" y=\"118\" width=\"350\" height=\"24\" fill=\"#fbfcfc\" stroke=\"#1d2125\" stroke-width=\"1.2\"\u003e\u003c\/rect\u003e\n        \n        \u003cg font-family=\"IBM Plex Mono, monospace\" font-size=\"12\" fill=\"#1f4fa8\"\u003e\n          \u003cline x1=\"468\" y1=\"99\" x2=\"560\" y2=\"30\" stroke=\"#1f4fa8\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n          \u003ccircle cx=\"468\" cy=\"99\" r=\"3\" fill=\"#1f4fa8\"\u003e\u003c\/circle\u003e\n          \u003ctext x=\"565\" y=\"28\"\u003ePLUG NOSE LANDS ON O-RING\u003c\/text\u003e\n          \u003cline x1=\"430\" y1=\"160\" x2=\"520\" y2=\"238\" stroke=\"#1f4fa8\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n          \u003ccircle cx=\"430\" cy=\"160\" r=\"3\" fill=\"#1f4fa8\"\u003e\u003c\/circle\u003e\n          \u003ctext x=\"525\" y=\"242\"\u003eMACHINED CHAMFER · NO BURR\u003c\/text\u003e\n          \u003cline x1=\"300\" y1=\"102\" x2=\"210\" y2=\"30\" stroke=\"#1f4fa8\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n          \u003ccircle cx=\"300\" cy=\"102\" r=\"3\" fill=\"#1f4fa8\"\u003e\u003c\/circle\u003e\n          \u003ctext x=\"60\" y=\"28\"\u003eMINIMAL RADIAL PLAY\u003c\/text\u003e\n          \u003ctext x=\"40\" y=\"150\" fill=\"#6b747d\" font-size=\"11\"\u003ePLUG\u003c\/text\u003e\n          \u003ctext x=\"630\" y=\"78\" fill=\"#6b747d\" font-size=\"11\"\u003eCOUPLER\u003c\/text\u003e\n        \u003c\/g\u003e\n      \u003c\/svg\u003e\n\u003cdiv class=\"pr-figcap\"\u003e\n\u003cspan\u003eSchematic · not to scale\u003c\/span\u003e\u003cspan\u003eLocking mechanism omitted for clarity\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 16px;\"\u003eTry this before installing: connect a PRIMA plug to a PRIMA coupler and watch the plug seat. The tolerances drive the nose into the exact spot it needs to sit on the o-ring, so there's no room for water to deflect around it. Every connection seals the same way.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- QC LOG --\u003e\n\u003cdiv class=\"pr-sec\"\u003e\n\u003cspan class=\"pr-label\"\u003e06 · Process log\u003c\/span\u003e\n\u003ch2\u003eHow every fitting is made\u003c\/h2\u003e\n\u003cdiv class=\"pr-qc\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eOP 10\u003c\/b\u003e\u003cstrong\u003eSource\u003c\/strong\u003e\n\u003cp\u003e303 stainless from Pittsburgh, PA\u003c\/p\u003e\n\u003cspan class=\"pr-pass\"\u003ePASS\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eOP 20\u003c\/b\u003e\u003cstrong\u003eMachine\u003c\/strong\u003e\n\u003cp\u003e100% machined to ±0.005\" \/ ±1°\u003c\/p\u003e\n\u003cspan class=\"pr-pass\"\u003ePASS\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eOP 30\u003c\/b\u003e\u003cstrong\u003eInspect\u003c\/strong\u003e\n\u003cp\u003eProfile verified on a digital comparator\u003c\/p\u003e\n\u003cspan class=\"pr-pass\"\u003ePASS\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eOP 40\u003c\/b\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\n\u003cp\u003eDeburred, beveled, washed\u003c\/p\u003e\n\u003cspan class=\"pr-pass\"\u003ePASS\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- WARNING --\u003e\n\u003cdiv class=\"pr-sec\"\u003e\n\u003cdiv class=\"pr-warn\"\u003e\n\u003ch3\u003eSeal compatibility: read before using solvents\u003c\/h3\u003e\n\u003cp style=\"margin: 0;\"\u003eEPDM handles hot water, alkaline degreasers, acidic wheel and mineral cleaners, and most detailing chemistry well. It does \u003cstrong\u003enot\u003c\/strong\u003e tolerate petroleum-based products.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAvoid running petroleum solvents, oils, or solvent-based tar removers through these fittings.\u003c\/li\u003e\n\u003cli\u003eCitrus (d-limonene) degreasers can swell EPDM over time. Rinse after use.\u003c\/li\u003e\n\u003cli\u003eA swollen or nicked o-ring will leak no matter how precise the fitting is. Replace the o-ring, not the fitting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- WHO \/ WHAT \/ WHEN \/ WHERE \/ WHY --\u003e\n\u003cdiv class=\"pr-sec\"\u003e\n\u003cspan class=\"pr-label\"\u003e07 · Application\u003c\/span\u003e\n\u003ch2\u003eWho this is for\u003c\/h2\u003e\n\u003cdiv class=\"pr-w5\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"pr-label\"\u003eWho\u003c\/span\u003e\n\u003cp\u003eProfessional detailers, mobile operators, and enthusiasts who are done with leaky, gritty quick-connects\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"pr-label\"\u003eWhat\u003c\/span\u003e\n\u003cp\u003eA 3\/8\" FPT Plug in US-machined 303 stainless\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"pr-label\"\u003eWhen\u003c\/span\u003e\n\u003cp\u003eNew builds, or replacing a worn or leaking QC point\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"pr-label\"\u003eWhere\u003c\/span\u003e\n\u003cp\u003eHose ends and accessories where you want the plug half of the connection on a male-threaded fitting\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"pr-label\"\u003eWhy\u003c\/span\u003e\n\u003cp\u003eA repeatable, leak-free seal and smooth action, connection after connection\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- CARE STRIP --\u003e\n\u003cdiv class=\"pr-care\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eKeep it clean\u003c\/b\u003e\n\u003cp\u003eTight tolerances don't like grit. Don't drag connections through dirt, and rinse them after each job.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eInspect seasonally\u003c\/b\u003e\n\u003cp\u003eCheck o-rings for flat spots, nicks, or swelling. A worn o-ring is the most common cause of leaks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eReplace the seal\u003c\/b\u003e\n\u003cp\u003eThe stainless will outlast your machine. Keep spare EPDM o-rings on hand.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- VERDICT --\u003e\n\u003cdiv class=\"pr-sec pr-verdict\"\u003e\n\u003cspan class=\"pr-label\"\u003e08 · Is it worth it?\u003c\/span\u003e\n\u003ch2\u003eThat's your call\u003c\/h2\u003e\n\u003cp\u003eTighter tolerances mean a lower failure rate most of the time. There's a trade-off, though, and anyone who's run a tight-tolerance firearm knows it: precision parts are less forgiving of dirt. Keep these clean and out of the mud, and they're an upgrade you can feel, not just one you can see on the receipt.\u003c\/p\u003e\n\u003cblockquote\u003eThere is no perfect system. Water carved the Grand Canyon, and given time it will go wherever it wants. With stainless, the failure point is almost never the metal. It's a degraded o-ring or a dirty connection. Keep them clean, inspect them seasonally, and these should be the last fittings you buy for that spot on your rig.\u003c\/blockquote\u003e\n\u003c\/div\u003e\n\u003c!-- FAQ --\u003e\n\u003cdiv class=\"pr-sec pr-faq\"\u003e\n\u003cspan class=\"pr-label\"\u003e09 · FAQ\u003c\/span\u003e\n\u003ch2\u003eCommon questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does a 3\/8\" FPT plug thread onto?\u003c\/summary\u003e\n\u003cp\u003eAny 3\/8\" male NPT (MPT) thread. The threads are inside the plug's hex body. Seal the male threads with PTFE tape or thread sealant before assembly.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes the plug have its own o-ring?\u003c\/summary\u003e\n\u003cp\u003eNo. The seal lives in the coupler. The plug's machined nose is what lands on the coupler's EPDM o-ring, which is why nose precision matters so much.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat's the difference between FPT and MPT?\u003c\/summary\u003e\n\u003cp\u003eFPT (female pipe thread) has threads on the inside; MPT (male pipe thread) has threads on the outside. A female fitting threads onto a male end. Both use NPT, the US tapered pipe thread standard, so match the size: 3\/8\" to 3\/8\", 1\/4\" to 1\/4\".\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCoupler or plug: which one do I need?\u003c\/summary\u003e\n\u003cp\u003eEvery quick-connect union has two halves. The coupler is the socket with the pull-back sleeve and the o-ring. The plug is the solid nose that snaps into it. You need one of each at every connection point.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhy are PRIMA fittings harder to connect than my old ones?\u003c\/summary\u003e\n\u003cp\u003eLess clearance between plug and coupler. The firm engagement is the tolerance at work, and it means the union has no room to wobble or let water bypass the o-ring.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs 303 stainless more corrosion resistant than other stainless fittings?\u003c\/summary\u003e\n\u003cp\u003eNot meaningfully. 303 is chosen for machinability, which is what allows the tight tolerances and smooth finish. Its corrosion resistance is excellent in water and detailing chemistry, but the reason to buy PRIMA is fit and seal.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat chemicals should I keep away from the EPDM seals?\u003c\/summary\u003e\n\u003cp\u003ePetroleum solvents, oils, and solvent-based tar or adhesive removers. Citrus degreasers can also swell EPDM with repeated exposure. Water-based alkaline and acidic cleaners are fine.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhere are PRIMA fittings made?\u003c\/summary\u003e\n\u003cp\u003eVeloci Performance began machining the PRIMA line in the USA in 2023, using 303 stainless sourced from Pittsburgh, Pennsylvania. Detail Division ships them nationally and internationally.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c!-- ORIGIN FOOTER --\u003e\n\u003cdiv class=\"pr-origin\"\u003e\n\u003cdiv class=\"pr-origin-mark\"\u003eMade in USA\u003csmall\u003eSteel · Pittsburgh, PA\u003c\/small\u003e\n\u003c\/div\u003e\n\u003cp\u003eIn 2023, Veloci Performance moved production of a select group of pressure washer fittings to the United States. Material and shipping costs were squeezing the global market, and they saw it as a chance to build something better instead of cheaper. PRIMA is the result: American steel, machined to a tolerance most fittings never see.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"MTM","offers":[{"title":"Default Title","offer_id":66862621163635,"sku":"56.0081","price":9.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1970\/4203\/files\/PrimaStainlessSteelQCPlug3-8FPT.jpg?v=1791993261","url":"https:\/\/www.detail-division.com\/products\/prima-stainless-steel-qc-plug-3-8fpt","provider":"Detail-Division","version":"1.0","type":"link"}