{"product_id":"liftmaster-ma013","title":"LiftMaster MA013 Mega Arm Shear Pin — No. 6 Taper, 2-Inch Length","description":"\u003cp\u003e\u003cstrong\u003eThe LiftMaster MA013 is the replacement shear pin for the documented Mega Arm barrier-operator mechanism. The manufacturer specifies a two-inch-long No. 6 taper pin in its shear-pin replacement instructions. This intentionally selected connection must be restored with the prescribed part after the arm and drive have been inspected. A stronger bolt, nail or improvised pin is not an upgrade: changing the connection can defeat the intended mechanical behavior and leave damage elsewhere in the barrier system unresolved.\u003c\/strong\u003e\u003c\/p\u003e\u003ch2\u003eCompatibility — Models, Versions and Exclusions\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel or selection point\u003c\/th\u003e\n\u003cth\u003eCompatibility requirement\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMega Arm \/ Mega Arm Tower\u003c\/td\u003e\n\u003ctd\u003eConfirm MA013 and the shear-pin procedure in the applicable manual.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther barrier models\u003c\/td\u003e\n\u003ctd\u003eDo not assume fit from arm shape or brand; verify their own parts list.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNo. 6 taper specification\u003c\/td\u003e\n\u003ctd\u003eThis describes the pin size and taper, not a generic No. 6 screw.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eArm hub and shaft\u003c\/td\u003e\n\u003ctd\u003eMust be inspected after impact or pin failure before a new pin is installed.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrdinary bolt or solid substitute\u003c\/td\u003e\n\u003ctd\u003eNot an approved replacement merely because it can pass through the opening.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eInspect the Barrier After a Shear-Pin Failure\u003c\/h2\u003e\u003cp\u003eA broken pin may follow an impact or abnormal load. Before replacing it, inspect the arm, hub, shaft and surrounding hardware for damage or displacement. Replacing only the pin can conceal a bent component or a continuing obstruction that will affect the next operating cycle. Determine what caused the failure before returning the lane to traffic.\u003c\/p\u003e\u003cp\u003eThe barrier arm must be supported and controlled during service. Do not rely on a failed connection to hold it in position, and do not assume that removing power alone prevents movement. Follow the manufacturer’s procedure for the actual operator and arm arrangement. The new pin should restore the intended connection without enlarging, welding or otherwise improvising a repair to damaged mating holes.\u003c\/p\u003e\u003ch2\u003eSpecifications and Product Identification\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart number\u003c\/td\u003e\n\u003ctd\u003eMA013\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComponent\u003c\/td\u003e\n\u003ctd\u003eBarrier-operator shear pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer size\u003c\/td\u003e\n\u003ctd\u003eNo. 6 taper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecified length\u003c\/td\u003e\n\u003ctd\u003e2 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDocumented platform\u003c\/td\u003e\n\u003ctd\u003eMega Arm family mechanism; verify the model manual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSelection basis\u003c\/td\u003e\n\u003ctd\u003eSpecified pin and undamaged mating components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eBefore Ordering\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eIdentify the exact barrier-operator model and applicable shear-pin instructions.\u003c\/li\u003e\n\u003cli\u003eConfirm the No. 6 taper and two-inch specification.\u003c\/li\u003e\n\u003cli\u003eInspect the arm, hub, shaft and retention arrangement after any impact.\u003c\/li\u003e\n\u003cli\u003ePlan safe lane closure, arm support and supervised operation after repair.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003ePackage Contents and Separate Requirements\u003c\/h2\u003e\u003cp\u003eThis offer identifies the MA013 shear pin. It is not a complete arm hub, shaft, barrier arm or gearbox repair kit. Confirm the supplied quantity and any retention pieces in the current offer. If the mating components have been damaged, obtain the correctly identified replacement parts separately rather than using the pin as a way to hold a damaged assembly together.\u003c\/p\u003e\u003ch2 class=\"safety-warning\"\u003eSafety Warnings — Read Before Installation or Service\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWARNING: A falling or unexpectedly moving barrier arm can cause serious injury. A qualified gate technician must secure and support the arm before shear-pin service.\u003c\/li\u003e\n\u003cli\u003eDisconnect AC and battery power as directed and prevent vehicles or pedestrians from entering the service area.\u003c\/li\u003e\n\u003cli\u003eUse the specified shear pin. Do not replace it with a stronger bolt, weld the connection solid or modify damaged mating holes as an improvised repair.\u003c\/li\u003e\n\u003cli\u003eInspect the complete arm assembly and verify the operator’s prescribed travel and protection tests before reopening the lane.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRelated Products and Important Differences\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/garage-doorparts.com\/products\/liftmaster-lmrrul-monitored-retro-reflective-photo-eye\"\u003eLMRRUL monitored photo eye\u003c\/a\u003e — a separate protection option only where the exact operator and control revision approve it; not a universal legacy retrofit.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/garage-doorparts.com\/products\/liftmaster-lmwekitu-monitored-wireless-edge-kit-for-gate-operators\"\u003eLMWEKITU monitored wireless edge kit\u003c\/a\u003e — a separate edge communication system for approved controls and resistive edges; not a replacement for this mechanical or electrical service part.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat does No. 6 mean here?\u003c\/h3\u003e\u003cp\u003eIt is the taper-pin specification in the manufacturer instructions, not a screw-thread size.\u003c\/p\u003e\u003ch3\u003eCan I use a stronger pin so it will not break?\u003c\/h3\u003e\u003cp\u003eNo. Preserve the specified shear connection rather than changing its intended behavior.\u003c\/p\u003e\u003ch3\u003eShould the arm be inspected after an impact?\u003c\/h3\u003e\u003cp\u003eYes. A new pin does not repair a bent arm, damaged hub or shaft problem.\u003c\/p\u003e\u003ch3\u003eIs this a complete breakaway-arm kit?\u003c\/h3\u003e\u003cp\u003eNo. This is a replacement shear pin for the documented mechanism, not a complete arm or breakaway conversion.\u003c\/p\u003e\u003ch2\u003eNeed Help Confirming the Right Product?\u003c\/h2\u003e\u003cp\u003e\u003ca href=\"https:\/\/garage-doorparts.com\/pages\/contact\"\u003eContact Garage-DoorParts.com before ordering\u003c\/a\u003e. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.\u003c\/p\u003e","brand":"Controlled products","offers":[{"title":"Default Title","offer_id":60655779774750,"sku":"MA013","price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/2781\/5710\/files\/ma013.jpg?v=1793139942","url":"https:\/\/garage-doorparts.com\/products\/liftmaster-ma013","provider":"garage-doorparts.com","version":"1.0","type":"link"}