{"product_id":"gardner-spring-mb1250-040-belleville-disc-spring","title":"Gardner Spring MB1250-040 Belleville Disc Spring","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GARDNER SPRING MB1250-040 is a Belleville disc spring  -  also known as a conical washer spring  -  designed to deliver high load capacity in a compact axial envelope. With an outer diameter of 1.25 inches, an inner diameter of 0.63 inches, and an overall height of 0.082 inches, this spring generates 47 pounds of load at its rated deflection of 0.006 inches. Constructed from steel, the MB1250-040 suits applications where precise, consistent spring force must be maintained in tight spaces. It is installed by mechanical contractors, millwrights, and precision assembly technicians across industrial and trade equipment.\u003c\/p\u003e\u003cp\u003eThis Belleville disc spring is used wherever a high spring rate is needed in a minimal stack height  -  common in bolted flange assemblies, valve bodies, pressure fittings, and rotating equipment. The 5\/8-inch bolt size compatibility makes it a practical fit for standard fastener hardware found in HVAC, plumbing, and industrial piping assemblies. It can be stacked in series to increase deflection or in parallel to increase load, depending on the design requirement.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1.25-inch outer diameter with 0.63-inch inner diameter for use with 5\/8-inch bolt hardware\u003c\/li\u003e\n\u003cli\u003e47-pound rated load at 0.006-inch deflection provides high force in a compact profile\u003c\/li\u003e\n\u003cli\u003eOverall height of 0.082 inches allows low-profile stacking configurations\u003c\/li\u003e\n\u003cli\u003eSteel construction for durability in mechanical load-bearing applications\u003c\/li\u003e\n\u003cli\u003eSold in packages of 12, with no minimum order beyond a single package\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eSized for use with 5\/8-inch bolt assemblies. Designed as a standard Belleville disc spring for use in bolted flange connections, valve assemblies, and mechanical equipment requiring controlled axial load.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by licensed mechanical or industrial technicians. Before servicing any assembly containing disc springs, relieve all system pressure and de-energize related equipment per applicable codes. When stacking multiple disc springs, verify orientation  -  series versus parallel  -  against the load-deflection requirement before torquing fasteners. Do not exceed the rated deflection, as flattening the spring beyond design limits will cause permanent set and loss of spring function.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Diameter\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner Diameter\u003c\/strong\u003e: 0.63 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Height (OAH)\u003c\/strong\u003e: 0.082 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeflection\u003c\/strong\u003e: 0.006 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoad at Deflection\u003c\/strong\u003e: 47 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolt Size\u003c\/strong\u003e: 5\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.13 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: GARDNER SPRING\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: MB1250-040\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GARDNER SPRING","offers":[{"title":"Default Title","offer_id":52029863362866,"sku":"MB1250-040","price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bed42bc257453ca0e37f4aab39115600.jpg?v=1790018912","url":"https:\/\/voomisupply.com\/products\/gardner-spring-mb1250-040-belleville-disc-spring","provider":"Voomi Supply","version":"1.0","type":"link"}