{"id":4743,"date":"2026-09-16T08:07:22","date_gmt":"2026-09-16T08:07:22","guid":{"rendered":"https:\/\/www.henghuahose.com\/?post_type=product&p=4743"},"modified":"2026-09-16T09:58:07","modified_gmt":"2026-09-16T09:58:07","slug":"90-degree-elbow-metric-male-74-cone-bspt-male-adapter-1qt9-sp","status":"publish","type":"product","link":"https:\/\/www.henghuahose.com\/de\/product\/90-degree-elbow-metric-male-74-cone-bspt-male-adapter-1qt9-sp\/","title":{"rendered":"90 Degree Elbow Metric Male 74 Degree Cone to BSPT Male Adapter 1QT9-SP (74\u00b0 Cone \/ BSPT Sealing Thread)"},"content":{"rendered":"
\"90<\/figure>\r\n

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Why This 90 Degree Elbow Metric Male 74 Degree Cone to BSPT Male Adapter 1QT9-SP Passes the Compliance Gate<\/h2>\r\n\r\n\r\n\r\n

The 90 degree elbow metric male 74 degree cone to BSPT male adapter 1QT9-SP<\/strong> joins two different sealing systems in one forged body: a metric male 74 degree cone end (the 74 degree included cone, that is the 37 degree flare seat geometry of SAE J514 applied to a metric thread) and a male taper pipe thread end machined to the 55 degree sealing pipe thread family of ISO 7-1 \/ GB\/T 7306 (identical thread form to EN 10226-1, historically written R1\/4″, R1\/2″, R1″ and so on).<\/p>\r\n\r\n\r\n\r\n

That is what makes it a maintenance item rather than a catalogue curiosity: European and Japanese machine blocks, cylinder heads, valve banks and test manifolds often carry a metric flared port, while the pipework, gauge stems or lubrication lines feeding them are British taper thread. One 1QT9-SP replaces a straight metric 74 degree cone adapter stacked with a separate BSPT hex nipple, removing one threaded joint, one wrench pass and one place where oil can weep.<\/p>\r\n\r\n\r\n\r\n

The elbow is a single forged and machined body, with no welded joint, brazed insert or pressed-in stem to fail under vibration. Every row in the table below is reproduced from the series dimension drawing, so the size can be checked before a purchase order is raised.<\/p>\r\n\r\n\r\n\r\n

Sizes run from M14X1.5 x R1\/4″X19 to M45X2 x R1.1\/4″X11, covering metric flared ports for tube outer diameters of 8 mm to 34 mm.<\/p>\r\n\r\n\r\n\r\n

Core Advantages<\/h3>\r\n\r\n\r\n\r\n
    \r\n
  1. Cross-standard integration in one part.<\/strong> Converts a metric 74 degree cone port to a BSPT male thread, so mixed-standard machines can be piped without adapter stacks.<\/li>\r\n
  2. Compact 90 degree routing.<\/strong> The bend is forged into the body, saving the space a straight adapter plus a swept hose end would consume near a bulkhead or a cylinder cap.<\/li>\r\n
  3. Twelve closed sizes.<\/strong> A complete matrix from M14X1.5 to M45X2, each with fixed A, B, S1 and S2 dimensions so tooling, hose routing and wrench access can be planned from the table.<\/li>\r\n
  4. Optional RN tube kit.<\/strong> Order with suffix \/RN<\/code> and the fitting ships with the flared tube sleeve NB500-Q and nut NB200-Q, turning the outlet into a complete flared tube connection.<\/li>\r\n
  5. Traceable, test-documented production.<\/strong> Batch numbers, material certificates on request and 100% pressure testing of the finished assembly are part of the standard Globhose\/HENGHUA hydraulic fitting offer.<\/li>\r\n
  6. OEM marking available.<\/strong> Laser part marking, customer logo and private labelling are offered for OEM programmes.<\/li>\r\n<\/ol>\r\n\r\n\r\n\r\n

    Technical Specifications<\/h2>\r\n\r\n\r\n\r\n

    What Is a 90 Degree Elbow Metric Male 74 Degree Cone to BSPT Male Adapter?<\/h3>\r\n\r\n\r\n\r\n

    It is a one-piece 90 degree elbow with a 74 degree external cone (37 degree flare seat) male end on one leg and a male BSPT taper thread end on the other leg. The metric side seals metal-to-metal on a matching 74 degree internal cone seat; the BSPT side seals on the thread itself, so it needs a thread sealant or a soft-sealing washer arrangement depending on the mating port.<\/p>\r\n\r\n\r\n\r\n

    Two families are often confused with this part and neither is interchangeable with it:<\/p>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
    Confusion risk<\/th>\r\nWhat it looks like<\/th>\r\nWhy 1QT9-SP is different<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
    Metric 74 degree cone vs 24 degree cone<\/td>\r\nDIN 2353 (L\/S series) and ISO 8434-1 use a 24 degree cone with a soft seal<\/td>\r\nA 24 degree cone will not seat on a 74 degree seat, and the thread sizes differ even where they look similar<\/td>\r\n<\/tr>\r\n
    BSPT vs BSPP<\/td>\r\nBSPP (G thread, ISO 228-1) seals on a bonded or O-ring face seal<\/td>\r\nBSPT (R thread, ISO 7-1) is tapered and seals on the thread turns, so the two ends cannot be swapped<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n\r\n\r\n\r\n

    Connection 1 (Metric Male 74 Degree Cone End)<\/h3>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
    Attribute<\/th>\r\nDetail<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
    Sealing principle<\/td>\r\nMetal-to-metal contact of the 74 degree external cone on the mating 74 degree internal seat<\/td>\r\n<\/tr>\r\n
    Thread form<\/td>\r\nMetric parallel thread, 1.5 mm pitch up to M27X1.5, 2 mm pitch from M33X2 upwards<\/td>\r\n<\/tr>\r\n
    Thread sizes offered<\/td>\r\nM14X1.5, M16X1.5, M18X1.5, M22X1.5, M27X1.5, M30X1.5, M33X2, M36X2, M39X2, M45X2<\/td>\r\n<\/tr>\r\n
    Cone angle<\/td>\r\n74 degrees included (37 degree half angle), the flare geometry of SAE J514<\/td>\r\n<\/tr>\r\n
    Mating part<\/td>\r\nMetric female 74 degree cone seat, or the flared tube end dressed with sleeve NB500-Q and nut NB200-Q<\/td>\r\n<\/tr>\r\n
    Not compatible with<\/td>\r\n24 degree cone seats (DIN 2353 \/ ISO 8434-1), 60 degree cone seats, O-ring face seals<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n\r\n\r\n\r\n

    Connection 2 (BSPT Male End)<\/h3>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
    Attribute<\/th>\r\nDetail<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
    Sealing principle<\/td>\r\nTaper thread, 1:16 taper, seals by thread interference assisted by a thread sealant<\/td>\r\n<\/tr>\r\n
    Thread form<\/td>\r\n55 degree Whitworth sealing pipe thread, ISO 7-1 \/ GB\/T 7306 (EN 10226-1 family)<\/td>\r\n<\/tr>\r\n
    Thread sizes offered<\/td>\r\nR1\/4″X19, R3\/8″X19, R1\/2″X14, R3\/4″X14, R1″X11, R1.1\/4″X11<\/td>\r\n<\/tr>\r\n
    Mating part<\/td>\r\nFemale taper pipe port (Rp\/Rc family) of the same nominal size<\/td>\r\n<\/tr>\r\n
    Not compatible with<\/td>\r\nBSPP \/ G parallel ports without an additional face or bonded seal, NPT ports, metric ports<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n\r\n\r\n\r\n

    Dimensional Data<\/h3>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
    Symbol<\/th>\r\nMeaning<\/th>\r\nUnit<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
    PART NO.<\/td>\r\nComplete ordering code for the size, including the SP suffix that denotes the taper thread end<\/td>\r\n–<\/td>\r\n<\/tr>\r\n
    E<\/td>\r\nMetric male 74 degree cone thread on the first leg<\/td>\r\n–<\/td>\r\n<\/tr>\r\n
    F<\/td>\r\nMale taper pipe thread (BSPT \/ R) on the second leg<\/td>\r\n–<\/td>\r\n<\/tr>\r\n
    D<\/td>\r\nTube outer diameter served by the metric end<\/td>\r\nmm<\/td>\r\n<\/tr>\r\n
    A<\/td>\r\nCentre-to-end dimension, first leg, measured from the elbow centreline<\/td>\r\nmm<\/td>\r\n<\/tr>\r\n
    B<\/td>\r\nCentre-to-end dimension, second leg, measured from the elbow centreline<\/td>\r\nmm<\/td>\r\n<\/tr>\r\n
    S1<\/td>\r\nHex across-flats \/ wrench size at the first end, as marked on the drawing<\/td>\r\nmm<\/td>\r\n<\/tr>\r\n
    S2<\/td>\r\nHex across-flats \/ wrench size at the second end, as marked on the drawing<\/td>\r\nmm<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n\r\n\r\n\r\n

    D symbols in this series: D8, D10, D12, D14, D18, D20, D22, D25, D28, D34.<\/p>\r\n\r\n\r\n\r\n

    Full Dimension Table (Part Number Matrix)<\/h3>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
    PART NO.<\/th>\r\nTHREAD E<\/th>\r\nTHREAD F<\/th>\r\nTUBE O.D. D (mm)<\/th>\r\nA (mm)<\/th>\r\nB (mm)<\/th>\r\nS1 (mm)<\/th>\r\nS2 (mm)<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
    1QT9-14-04SP<\/td>\r\nM14X1.5<\/td>\r\nR1\/4″X19<\/td>\r\n8<\/td>\r\n30.2<\/td>\r\n25.5<\/td>\r\n14<\/td>\r\n17<\/td>\r\n<\/tr>\r\n
    1QT9-16-04SP<\/td>\r\nM16X1.5<\/td>\r\nR1\/4″X19<\/td>\r\n10<\/td>\r\n32<\/td>\r\n26.5<\/td>\r\n16<\/td>\r\n19<\/td>\r\n<\/tr>\r\n
    1QT9-18-06SP<\/td>\r\nM18X1.5<\/td>\r\nR3\/8″X19<\/td>\r\n12<\/td>\r\n34<\/td>\r\n29<\/td>\r\n19<\/td>\r\n22<\/td>\r\n<\/tr>\r\n
    1QT9-18-08SP<\/td>\r\nM18X1.5<\/td>\r\nR1\/2″X14<\/td>\r\n12<\/td>\r\n36<\/td>\r\n36<\/td>\r\n22<\/td>\r\n22<\/td>\r\n<\/tr>\r\n
    1QT9-22-08SP<\/td>\r\nM22X1.5<\/td>\r\nR1\/2″X14<\/td>\r\n14<\/td>\r\n37.5<\/td>\r\n36<\/td>\r\n22<\/td>\r\n27<\/td>\r\n<\/tr>\r\n
    1QT9-27-08SP<\/td>\r\nM27X1.5<\/td>\r\nR1\/2″X14<\/td>\r\n18<\/td>\r\n41.5<\/td>\r\n39.5<\/td>\r\n27<\/td>\r\n32<\/td>\r\n<\/tr>\r\n
    1QT9-27-12SP<\/td>\r\nM27X1.5<\/td>\r\nR3\/4″X14<\/td>\r\n18<\/td>\r\n41.5<\/td>\r\n44<\/td>\r\n27<\/td>\r\n32<\/td>\r\n<\/tr>\r\n
    1QT9-30-12SP<\/td>\r\nM30X1.5<\/td>\r\nR3\/4″X14<\/td>\r\n20<\/td>\r\n45.8<\/td>\r\n45.5<\/td>\r\n30<\/td>\r\n36<\/td>\r\n<\/tr>\r\n
    1QT9-33-12SP<\/td>\r\nM33X2<\/td>\r\nR3\/4″X14<\/td>\r\n22<\/td>\r\n49.5<\/td>\r\n47.5<\/td>\r\n33<\/td>\r\n38<\/td>\r\n<\/tr>\r\n
    1QT9-36-16SP<\/td>\r\nM36X2<\/td>\r\nR1″X11<\/td>\r\n25<\/td>\r\n51.5<\/td>\r\n52<\/td>\r\n36<\/td>\r\n41<\/td>\r\n<\/tr>\r\n
    1QT9-39-16SP<\/td>\r\nM39X2<\/td>\r\nR1″X11<\/td>\r\n28<\/td>\r\n55.5<\/td>\r\n55.2<\/td>\r\n41<\/td>\r\n46<\/td>\r\n<\/tr>\r\n
    1QT9-45-20SP<\/td>\r\nM45X2<\/td>\r\nR1.1\/4″X11<\/td>\r\n34<\/td>\r\n62.5<\/td>\r\n61<\/td>\r\n48<\/td>\r\n55<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n\r\n\r\n\r\n

    All dimensions are in millimetres. A and B are measured from the elbow centreline to the end face of each port; S1 and S2 are the wrench flats exactly as marked in the supplier dimension drawing. Thread callouts are reproduced verbatim, with the standardised reading of R1\/4″X19 as a 1\/4″ nominal taper pipe thread of 19 threads per inch where the notation follows that convention.<\/p>\r\n\r\n\r\n\r\n

    Thread Size and Dash Chart<\/h3>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
    Thread E (metric cone end)<\/th>\r\nThread F (BSPT end)<\/th>\r\nTube O.D. D (mm)<\/th>\r\nDash reference in PART NO.<\/th>\r\nTypical mating port<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
    M14X1.5<\/td>\r\nR1\/4″X19<\/td>\r\n8<\/td>\r\n-14-04<\/td>\r\nMetric 74 degree seat 8 mm tube line to 1\/4″ pipe port<\/td>\r\n<\/tr>\r\n
    M16X1.5<\/td>\r\nR1\/4″X19<\/td>\r\n10<\/td>\r\n-16-04<\/td>\r\n10 mm tube line to 1\/4″ pipe port<\/td>\r\n<\/tr>\r\n
    M18X1.5<\/td>\r\nR3\/8″X19<\/td>\r\n12<\/td>\r\n-18-06<\/td>\r\n12 mm tube line to 3\/8″ pipe port<\/td>\r\n<\/tr>\r\n
    M18X1.5<\/td>\r\nR1\/2″X14<\/td>\r\n12<\/td>\r\n-18-08<\/td>\r\n12 mm tube line to 1\/2″ pipe port<\/td>\r\n<\/tr>\r\n
    M22X1.5<\/td>\r\nR1\/2″X14<\/td>\r\n14<\/td>\r\n-22-08<\/td>\r\n14 mm tube line to 1\/2″ pipe port<\/td>\r\n<\/tr>\r\n
    M27X1.5<\/td>\r\nR1\/2″X14<\/td>\r\n18<\/td>\r\n-27-08<\/td>\r\n18 mm tube line to 1\/2″ pipe port<\/td>\r\n<\/tr>\r\n
    M27X1.5<\/td>\r\nR3\/4″X14<\/td>\r\n18<\/td>\r\n-27-12<\/td>\r\n18 mm tube line to 3\/4″ pipe port<\/td>\r\n<\/tr>\r\n
    M30X1.5<\/td>\r\nR3\/4″X14<\/td>\r\n20<\/td>\r\n-30-12<\/td>\r\n20 mm tube line to 3\/4″ pipe port<\/td>\r\n<\/tr>\r\n
    M33X2<\/td>\r\nR3\/4″X14<\/td>\r\n22<\/td>\r\n-33-12<\/td>\r\n22 mm tube line to 3\/4″ pipe port<\/td>\r\n<\/tr>\r\n
    M36X2<\/td>\r\nR1″X11<\/td>\r\n25<\/td>\r\n-36-16<\/td>\r\n25 mm tube line to 1″ pipe port<\/td>\r\n<\/tr>\r\n
    M39X2<\/td>\r\nR1″X11<\/td>\r\n28<\/td>\r\n-39-16<\/td>\r\n28 mm tube line to 1″ pipe port<\/td>\r\n<\/tr>\r\n
    M45X2<\/td>\r\nR1.1\/4″X11<\/td>\r\n34<\/td>\r\n-45-20<\/td>\r\n34 mm tube line to 1.1\/4″ pipe port<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n\r\n\r\n\r\n

    The dash pairs are read as metric size then pipe size: 04 = R1\/4″, 06 = R3\/8″, 08 = R1\/2″, 12 = R3\/4″, 16 = R1″, 20 = R1.1\/4″.<\/p>\r\n\r\n\r\n\r\n

    Material and Heat Treatment<\/h3>\r\n\r\n\r\n\r\n

    The dimension drawing for this series does not state a material grade or a heat treatment, so the values below describe typical production and remain subject to confirmation on the purchase order or drawing.<\/p>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
    Item<\/th>\r\nTypical supply<\/th>\r\nNotes<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
    Body material<\/td>\r\nCarbon steel<\/td>\r\nForged elbow body, machined on the cone and on both threads<\/td>\r\n<\/tr>\r\n
    Alternative material<\/td>\r\nStainless steel 304 \/ 316L<\/td>\r\nOn request, for offshore, food-grade and aggressive-media duty<\/td>\r\n<\/tr>\r\n
    Heat treatment<\/td>\r\nStress relief as required by the raw material state<\/td>\r\nNot a customer-specific certified cycle unless specified on the order<\/td>\r\n<\/tr>\r\n
    Surface finish<\/td>\r\nTrivalent zinc plating (Cr(VI)-free)<\/td>\r\nZn-Ni and other coatings on request<\/td>\r\n<\/tr>\r\n
    Inspection<\/td>\r\nDimensional check on cone angle, thread gauging, visual<\/td>\r\nRecords available per batch on request<\/td>\r\n<\/tr>\r\n
    Documentation<\/td>\r\nMill test certificate \/ material certificate on request<\/td>\r\nThird-party inspection (BV, SGS) can be arranged<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n\r\n\r\n\r\n

    Working Pressure and Operating Envelope<\/h3>\r\n\r\n\r\n\r\n

    The drawing above carries no pressure column, so no pressure rating is claimed for this series. The working pressure of a finished connection made with this 90 degree elbow metric male 74 degree cone to BSPT male adapter 1QT9-SP is governed by the port standard together with the hose or tube grade selected, and the finished assembly is only as strong as its weakest member.<\/p>\r\n\r\n\r\n\r\n

    Factory practice for this family:<\/p>\r\n\r\n\r\n\r\n