{"id":4809,"date":"2026-09-16T08:22:30","date_gmt":"2026-09-16T08:22:30","guid":{"rendered":"https:\/\/www.henghuahose.com\/?post_type=product&p=4809"},"modified":"2026-09-16T09:02:04","modified_gmt":"2026-09-16T09:02:04","slug":"metric-male-24-cone-plug-adapter-4c-4d","status":"publish","type":"product","link":"https:\/\/www.henghuahose.com\/de\/product\/metric-male-24-cone-plug-adapter-4c-4d\/","title":{"rendered":"Metric Male 24\u00b0 Cone Plug Adapter 4C \/ 4D (Port Blanking Plug)"},"content":{"rendered":"
\"Metric<\/figure>\r\n

 <\/p>\r\n\r\n\r\n\r\n\r\n\r\n

Why This Metric Male 24\u00b0 Cone Plug Adapter 4C \/ 4D Is a Reliable Port Blank<\/h2>\r\n\r\n\r\n\r\n

The metric male 24\u00b0 cone plug adapter 4C \/ 4D<\/strong> is a machined steel plug with a metric male thread and a 24\u00b0 cone, used to close a port that carries a metric female 24\u00b0 cone seat. The cone does the sealing. When the plug is torqued into the port, the 24\u00b0 cone is pressed into the female seat and the two steel surfaces deform into contact, so the blank holds pressure with no O-ring, no washer, no thread tape and no sealant.<\/p>\r\n\r\n\r\n\r\n

That matters in two situations. First, in a manifold or valve block where a circuit branch has been deleted, threaded tape residue or a missing elastomer ring is a common source of weeping ports after a rebuild. Second, on equipment that spends its life outdoors or at high temperature, an elastomeric seal is the part that ages first; a cone plug has nothing to age.<\/p>\r\n\r\n\r\n\r\n

Two series are listed under this drawing. 4C is the light L series<\/strong> and 4D is the heavy S series<\/strong>. Both are the same product in two wall thicknesses, matched to light series and heavy series ports respectively. Choosing between them is a question of which port you are blanking, not of which plug is stronger in the abstract.<\/p>\r\n\r\n\r\n\r\n

Core Advantages<\/h3>\r\n\r\n\r\n\r\n
    \r\n
  1. Seals on the cone, not on the thread<\/strong> \u2014 the metric male 24\u00b0 cone plug adapter 4C \/ 4D closes a port with a metal-to-metal cone joint, so leak paths do not depend on thread engagement, tape quality or sealant cure time.<\/li>\r\n
  2. No elastomer to age out<\/strong> \u2014 with no O-ring in the joint, the blank does not go hard, swell or take a compression set, which suits high-temperature and long-dormant circuits.<\/li>\r\n
  3. Fully removable and reusable<\/strong> \u2014 the plug can be backed out, inspected and refitted with the same result, which is what makes it useful for test ports and future expansion points.<\/li>\r\n
  4. Wrench flats sized for the port<\/strong> \u2014 the hex is proportioned so the plug can be tightened with a standard open-end or ring wrench without damaging the cone.<\/li>\r\n
  5. Light L and heavy S series in one family<\/strong> \u2014 4C and 4D cover both port standards, so a mixed-standard machine needs only one spare-parts line per size.<\/li>\r\n
  6. Free cross-reference and 24-hour quotation<\/strong> \u2014 send the port drawing, the old part number or a photograph and we will confirm the series, the thread and the quantity break.<\/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 24\u00b0 Cone Port Plug?<\/h3>\r\n\r\n\r\n\r\n

    A 24\u00b0 cone port plug is a solid, wrenchable fitting whose only purpose is to close a threaded port that is prepared with a metric 24\u00b0 cone seat. It is not a cap, not a blind plug with a flat washer and not a tapered-thread pipe plug. The sealing surface is the 24\u00b0 cone at the end of the plug, and it mates with the cone seat machined into the port.<\/p>\r\n\r\n\r\n\r\n

    This is the same sealing principle used by the male 24\u00b0 cone stud ends in the DIN 3861 \/ ISO 8434-1 tube system, applied to a blanking function. That is the main practical benefit for a maintenance planner: the plug belongs to the same interface family as the tube fittings already on the machine, so one port preparation and one wrench set covers both tube joints and blanks.<\/p>\r\n\r\n\r\n\r\n

    A correctly specified metric male 24\u00b0 cone plug adapter 4C \/ 4D is therefore a systems part rather than a miscellaneous hardware item. It closes the port without changing what the port is prepared for, and it can be removed later without repairing the port face, because nothing was cut, glued or taped.<\/p>\r\n\r\n\r\n\r\n

    Connection \u2014 Metric Male 24\u00b0 Cone<\/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
    Item<\/th>\r\nDetail<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
    Interface type<\/td>\r\nMetric male plug with 24\u00b0 cone<\/td>\r\n<\/tr>\r\n
    Sealing method<\/td>\r\nMetal-to-metal 24\u00b0 cone contact in the metric female cone seat<\/td>\r\n<\/tr>\r\n
    Thread form<\/td>\r\nMetric fine pitch, size-specific (for example M12X1.5, M16X1.5, M22X1.5)<\/td>\r\n<\/tr>\r\n
    Reference form<\/td>\r\nMetric 24\u00b0 cone (DIN 3861 \/ ISO 8434-1 family)<\/td>\r\n<\/tr>\r\n
    Head style<\/td>\r\nHex head with wrench flats, plain end opposite the cone<\/td>\r\n<\/tr>\r\n
    Series<\/td>\r\nLight L (4C) and heavy S (4D)<\/td>\r\n<\/tr>\r\n
    Sealing element<\/td>\r\nNone \u2014 no O-ring, no washer, no sealant<\/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
    Symbol<\/th>\r\nMeaning<\/th>\r\nUnit<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
    PART NO.<\/td>\r\nCatalogue order code for the size<\/td>\r\n–<\/td>\r\n<\/tr>\r\n
    E<\/td>\r\nMetric male thread at the plug end<\/td>\r\nmm pitch notation<\/td>\r\n<\/tr>\r\n
    D1<\/td>\r\nTube outside diameter the plug row is matched to<\/td>\r\nmm<\/td>\r\n<\/tr>\r\n
    l1<\/td>\r\nPlug dimension as marked on the drawing<\/td>\r\nmm<\/td>\r\n<\/tr>\r\n
    L1<\/td>\r\nOverall length of the plug<\/td>\r\nmm<\/td>\r\n<\/tr>\r\n
    S1<\/td>\r\nHex across flats at the plug head<\/td>\r\nmm<\/td>\r\n<\/tr>\r\n
    S2<\/td>\r\nSecond hex across flats shown on the drawing<\/td>\r\nmm<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n\r\n\r\n\r\n

    Full 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\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
    PART NO.<\/th>\r\nE THREAD<\/th>\r\nTUBE O.D. D1<\/th>\r\nl1<\/th>\r\nL1<\/th>\r\nS1<\/th>\r\nS2<\/th>\r\nPressure Group<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
    4C-12<\/td>\r\nM12X1.5<\/td>\r\n6<\/td>\r\n7<\/td>\r\n22<\/td>\r\n12<\/td>\r\n14<\/td>\r\n31.5 MPa, light series L<\/td>\r\n<\/tr>\r\n
    4C-14<\/td>\r\nM14X1.5<\/td>\r\n8<\/td>\r\n8<\/td>\r\n23<\/td>\r\n14<\/td>\r\n17<\/td>\r\n31.5 MPa, light series L<\/td>\r\n<\/tr>\r\n
    4C-16<\/td>\r\nM16X1.5<\/td>\r\n10<\/td>\r\n9<\/td>\r\n24<\/td>\r\n17<\/td>\r\n19<\/td>\r\n31.5 MPa, light series L<\/td>\r\n<\/tr>\r\n
    4C-18<\/td>\r\nM18X1.5<\/td>\r\n12<\/td>\r\n10<\/td>\r\n25<\/td>\r\n19<\/td>\r\n22<\/td>\r\n31.5 MPa, light series L<\/td>\r\n<\/tr>\r\n
    4C-22<\/td>\r\nM22X1.5<\/td>\r\n15<\/td>\r\n11<\/td>\r\n26<\/td>\r\n24<\/td>\r\n27<\/td>\r\n31.5 MPa, light series L<\/td>\r\n<\/tr>\r\n
    4C-26<\/td>\r\nM26X1.5<\/td>\r\n18<\/td>\r\n11.5<\/td>\r\n28<\/td>\r\n27<\/td>\r\n32<\/td>\r\n31.5 MPa, light series L<\/td>\r\n<\/tr>\r\n
    4C-30<\/td>\r\nM30X2<\/td>\r\n22<\/td>\r\n13.5<\/td>\r\n30<\/td>\r\n32<\/td>\r\n36<\/td>\r\n16 MPa, light series L<\/td>\r\n<\/tr>\r\n
    4C-36<\/td>\r\nM36X2<\/td>\r\n28<\/td>\r\n14.5<\/td>\r\n31<\/td>\r\n41<\/td>\r\n41<\/td>\r\n16 MPa, light series L<\/td>\r\n<\/tr>\r\n
    4C-45<\/td>\r\nM45X2<\/td>\r\n35<\/td>\r\n14.5<\/td>\r\n36<\/td>\r\n46<\/td>\r\n50<\/td>\r\n16 MPa, light series L<\/td>\r\n<\/tr>\r\n
    4C-52<\/td>\r\nM52X2<\/td>\r\n42<\/td>\r\n16<\/td>\r\n39<\/td>\r\n55<\/td>\r\n60<\/td>\r\n16 MPa, light series L<\/td>\r\n<\/tr>\r\n
    4D-14<\/td>\r\nM14X1.5<\/td>\r\n6<\/td>\r\n11<\/td>\r\n26<\/td>\r\n14<\/td>\r\n17<\/td>\r\n63 MPa, heavy series S<\/td>\r\n<\/tr>\r\n
    4D-16<\/td>\r\nM16X1.5<\/td>\r\n8<\/td>\r\n13<\/td>\r\n28<\/td>\r\n17<\/td>\r\n19<\/td>\r\n63 MPa, heavy series S<\/td>\r\n<\/tr>\r\n
    4D-18<\/td>\r\nM18X1.5<\/td>\r\n10<\/td>\r\n12.5<\/td>\r\n29<\/td>\r\n19<\/td>\r\n22<\/td>\r\n63 MPa, heavy series S<\/td>\r\n<\/tr>\r\n
    4D-20<\/td>\r\nM20X1.5<\/td>\r\n12<\/td>\r\n14.5<\/td>\r\n31<\/td>\r\n22<\/td>\r\n24<\/td>\r\n63 MPa, heavy series S<\/td>\r\n<\/tr>\r\n
    4D-22<\/td>\r\nM22X1.5<\/td>\r\n14<\/td>\r\n16<\/td>\r\n34<\/td>\r\n24<\/td>\r\n27<\/td>\r\n63 MPa, heavy series S<\/td>\r\n<\/tr>\r\n
    4D-24<\/td>\r\nM24X1.5<\/td>\r\n16<\/td>\r\n15.5<\/td>\r\n34<\/td>\r\n27<\/td>\r\n30<\/td>\r\n40 MPa, heavy series S<\/td>\r\n<\/tr>\r\n
    4D-30<\/td>\r\nM30X2<\/td>\r\n20<\/td>\r\n17.5<\/td>\r\n39<\/td>\r\n32<\/td>\r\n36<\/td>\r\n40 MPa, heavy series S<\/td>\r\n<\/tr>\r\n
    4D-36<\/td>\r\nM36X2<\/td>\r\n25<\/td>\r\n20<\/td>\r\n44<\/td>\r\n38<\/td>\r\n46<\/td>\r\n40 MPa, heavy series S<\/td>\r\n<\/tr>\r\n
    4D-42<\/td>\r\nM42X2<\/td>\r\n30<\/td>\r\n20.5<\/td>\r\n47<\/td>\r\n46<\/td>\r\n50<\/td>\r\n40 MPa, heavy series S<\/td>\r\n<\/tr>\r\n
    4D-52<\/td>\r\nM52X2<\/td>\r\n38<\/td>\r\n23<\/td>\r\n54<\/td>\r\n55<\/td>\r\n60<\/td>\r\n31.5 MPa, heavy series S<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n\r\n\r\n\r\n
    \r\n

    The table above is transcribed in full from the 4C \/ 4D plug drawing: 10 light series L rows and 10 heavy series S rows, each with the plug thread E, the tube outside diameter D1, the dimensions l1 and L1, the hexes S1 and S2, and the pressure grade printed against that row. The drawing also shows the 4C-RN \/ 4D-RN variant, which is the same plug supplied as a complete set with cutting ring and nut.<\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n

    Materials and Finish<\/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
    Component<\/th>\r\nStandard material<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
    Plug body (4C \/ 4D)<\/td>\r\nCarbon steel, machined from bar stock<\/td>\r\n<\/tr>\r\n
    Surface protection<\/td>\r\nPlated finish as standard practice for hydraulic adapters<\/td>\r\n<\/tr>\r\n
    Sealing element<\/td>\r\nNone<\/td>\r\n<\/tr>\r\n
    Alternative on request<\/td>\r\nStainless steel body where the port sees washdown, brine or aggressive media<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n\r\n\r\n\r\n

    Working Pressure and Operating Envelope<\/h2>\r\n\r\n\r\n\r\n

    A metric male 24\u00b0 cone plug adapter 4C \/ 4D is normally the strongest element in the joint, because the plug has no bore, no internal passage and no second thread. The pressure limit therefore comes from the port: the thread size, the wall thickness and material of the block, the cone seat preparation and the operating temperature all set the ceiling. Light L series plugs match light series ports and heavy S series plugs match heavy series ports, and the two must not be interchanged even where the thread happens to start.<\/p>\r\n\r\n\r\n\r\n

    Because the seal is metal-to-metal and the plug is solid, service temperature is limited by the port and the fluid rather than by an elastomer. Request the size-specific pressure table with your enquiry and we will return the rating for the exact thread, series and block material.<\/p>\r\n\r\n\r\n\r\n

    When to Blank a Port with a Cone Plug<\/h2>\r\n\r\n\r\n\r\n

    Cone plugs are specified in four recurring situations:<\/p>\r\n\r\n\r\n\r\n