{"product_id":"specialinsert-851-mubux-brass-heat-set-inserts-for-plastic-m5-m6-and-10-24","title":"Specialinsert 851 Mubux Brass Heat Set Inserts for Plastic, M5, M6 and 10-24","description":"\u003cp\u003eSpecialinsert 851 Mubux heat set inserts are short brass threaded bushings that put a reusable metal thread into rigid thermoplastic parts. Made in Italy from natural-finish brass, the 851 series comes in M5, M6 and 10-24 internal threads, with body lengths of just 5 mm or 6 mm so they fit molded housings with limited wall depth. They are used in industrial, professional and Do-It-Yourself work wherever a plastic part needs a screw thread that survives repeated assembly and service.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrass construction:\u003c\/strong\u003e corrosion resistant, machinable and strong enough for repeated screw insertion and removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShort-series profile:\u003c\/strong\u003e 5 mm (M5) or 6 mm (M6 and 10-24) total length for thin walls and shallow bosses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAngled exterior ribs:\u003c\/strong\u003e the outside profile displaces and grips the surrounding plastic as the insert seats, giving high pull-out and torque resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree thread options:\u003c\/strong\u003e M5, M6 and 10-24 UNC, so you can match existing metric or imperial hardware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo adhesive required:\u003c\/strong\u003e the insert locks in mechanically as the plastic cools around it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesigned to limit radial stress\u003c\/strong\u003e in the host part, which helps avoid cracking around the boss.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow Heat Set Inserts Install\u003c\/h2\u003e\n\u003cp\u003eThe 851 series is intended for rigid, preferably molded thermoplastics and is installed with heat, pressure or ultrasonic equipment. Pick the method that matches the plastic, the part geometry and the volume you are running.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eDrill or mold the receiving hole to the diameter listed in the Physical Properties below, and confirm the wall around the hole meets the minimum thickness.\u003c\/li\u003e\n\u003cli\u003eSet the insert square on the hole with the thread opening facing out.\u003c\/li\u003e\n\u003cli\u003eApply heat with a soldering iron, a heat-set tip or a dedicated press such as the Chem-Set vertical heat press until the plastic around the insert softens.\u003c\/li\u003e\n\u003cli\u003ePress the insert flush with the surface in one controlled stroke. Do not twist.\u003c\/li\u003e\n\u003cli\u003eLet the part cool before loading the thread. The plastic reflows around the ribs and locks the insert in place.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003ePopular Uses\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAdding serviceable screw threads to 3D printed and injection molded enclosures\u003c\/li\u003e\n\u003cli\u003eElectronics housings, control panels and appliance covers that get opened for maintenance\u003c\/li\u003e\n\u003cli\u003eAutomotive interior trim, sensor brackets and under-hood plastic components\u003c\/li\u003e\n\u003cli\u003eJigs, fixtures and prototype assemblies that are taken apart repeatedly\u003c\/li\u003e\n\u003cli\u003eReplacing stripped plastic threads in equipment housings\u003c\/li\u003e\n\u003cli\u003eSign, display and furniture hardware where fasteners mount into plastic panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePhysical Properties\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eM5 (SPE_851_M5_5MM)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInternal thread: M5\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 0.28 in (7.1 mm)\u003c\/li\u003e\n\u003cli\u003eTotal length: 0.197 in (5 mm)\u003c\/li\u003e\n\u003cli\u003eHole diameter: 0.252 in (6.4 mm)\u003c\/li\u003e\n\u003cli\u003eMinimum wall thickness: 0.106 in (2.7 mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eM6 (SPE_851_M6_6MM)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInternal thread: M6\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 0.34 in (8.7 mm)\u003c\/li\u003e\n\u003cli\u003eTotal length: 0.236 in (6 mm)\u003c\/li\u003e\n\u003cli\u003eHole diameter: 0.315 in (8 mm)\u003c\/li\u003e\n\u003cli\u003eMinimum wall thickness: 0.118 in (3 mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e10-24 (SPE_851_10-24_6MM)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInternal thread: 10-24 UNC\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 0.34 in (8.7 mm)\u003c\/li\u003e\n\u003cli\u003eTotal length: 0.236 in (6 mm)\u003c\/li\u003e\n\u003cli\u003eHole diameter: 0.315 in (8 mm)\u003c\/li\u003e\n\u003cli\u003eMinimum wall thickness: 0.118 in (3 mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eMaterial: brass, natural finish\u003c\/li\u003e\n\u003cli\u003eInstallation: heat, pressure or ultrasonic\u003c\/li\u003e\n\u003cli\u003eHost material: rigid thermoplastics\u003c\/li\u003e\n\u003cli\u003eCountry of manufacture: Italy\u003c\/li\u003e\n\u003cli\u003eSold individually. Price is per insert.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChoosing Between the Three Heat Set Inserts\u003c\/h2\u003e\n\u003cp\u003eUse the M5 when the boss is shallow or the wall is thin, since it needs only a 6.4 mm hole and 2.7 mm of wall. The M6 and 10-24 share the same 8.7 mm body and 8 mm hole, so the choice between them comes down to whether your screws are metric or imperial. Prepare the hole to the current Specialinsert technical sheet and run a test insert in scrap material before committing a production part.\u003c\/p\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cp\u003ePair these inserts with the Chem-Set Vertical Heat Press for repeatable, square installation. For press-in anchors in stone, solid surface and composite panels, see the Keep-Nut line, also made by Specialinsert.\u003c\/p\u003e\n\n\u003cp\u003eQuestions about hole prep, thread choice or installation equipment? Call Perigee Direct at \u003ca href=\"tel:8173819398\"\u003e(817) 381-9398\u003c\/a\u003e or email \u003ca href=\"mailto:sales@perigeedirect.com\"\u003esales@perigeedirect.com\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFOR INDUSTRIAL USE ONLY. Refer to the SDS prior to use.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Special Insert","offers":[{"title":"M5, 5 mm Length","offer_id":67666828001534,"sku":"SPE_851_M5_5MM","price":0.27,"currency_code":"USD","in_stock":true},{"title":"M6, 6 mm Length","offer_id":67666828034302,"sku":"SPE_851_M6_6MM","price":0.35,"currency_code":"USD","in_stock":true},{"title":"10-24 UNC, 6 mm Length","offer_id":67666828067070,"sku":"SPE_851_10-24_6MM","price":0.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1212\/5762\/files\/851-1.png?v=1791221092","url":"https:\/\/www.perigeedirect.com\/products\/specialinsert-851-mubux-brass-heat-set-inserts-for-plastic-m5-m6-and-10-24","provider":"Perigee Direct","version":"1.0","type":"link"}