{"product_id":"de-sta-co-578-hold-down-toggle-clamp-4000-lb-vertical","title":"De-sta-co 578 Hold-down Toggle Clamp 4000 Lb Vertical","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe DE-STA-CO 578 is a heavy-duty manual hold-down toggle clamp designed for vertical clamping applications in industrial workholding, fixturing, and fabrication setups. Built from carbon steel with a zinc finish, it delivers a rated holding capacity of 4,000 pounds (17,800 N) and a maximum mechanical advantage of up to 7.6:1. The straight handle moves through 129 degrees of travel, and the solid bar opens to 199 degrees, allowing fast workpiece loading and unloading without removing the clamp. The red straight handle provides a clear visual indicator and positive grip during actuation. This clamp is installed by machinists, toolmakers, and production fixture builders.\u003c\/p\u003e\u003cp\u003eThe 578 fits straight-base mounting configurations where vertical clamping force is required to secure workpieces against a flat surface or fixture plate. With 2.79 inches of clearance under the bar and a bar width of 1.26 inches, it accommodates a range of workpiece thicknesses in production or repair environments. The overall height of 11.04 inches and overall length of 8.62 inches suit medium to large fixture builds. It is well suited for welding positioners, drill press tables, assembly fixtures, and similar industrial applications where consistent, repeatable clamping force is critical.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e4,000 lb holding capacity with mechanical advantage up to 7.6:1 for secure workpiece retention\u003c\/li\u003e\n\u003cli\u003eSolid closed-end bar with 199 degrees of opening for quick workpiece access\u003c\/li\u003e\n\u003cli\u003e129-degree handle movement provides smooth, positive toggle action\u003c\/li\u003e\n\u003cli\u003eCarbon steel construction with zinc finish for corrosion resistance in shop environments\u003c\/li\u003e\n\u003cli\u003eStraight base mounts flat to fixture plates, tables, and jigs without adapter hardware\u003c\/li\u003e\n\u003cli\u003eRed straight handle for high-visibility identification and comfortable actuation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style hold-down toggle clamp for use in industrial fixturing, welding tables, drill press setups, and production assembly jigs requiring vertical clamping force with a straight base mount.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eLicensed machinists, toolmakers, or qualified fixture builders typically install this clamp. Secure the straight base to a flat mounting surface using appropriately sized bolts through the base holes and verify that fastener grade matches the clamp load rating. Confirm that the toggle reaches full over-center lock position on every actuation before placing the fixture into production use. Do not modify the bar, handle, or linkage assembly, as alterations compromise the rated holding capacity and mechanical advantage.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHolding Capacity\u003c\/strong\u003e: 4,000 lb (17,800 N)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandle Orientation\u003c\/strong\u003e: Vertical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandle Style\u003c\/strong\u003e: Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBar Style\u003c\/strong\u003e: Solid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBar End Type\u003c\/strong\u003e: Closed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Style\u003c\/strong\u003e: Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBar Opening\u003c\/strong\u003e: 199 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandle Movement\u003c\/strong\u003e: 129 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Mechanical Advantage\u003c\/strong\u003e: 4.2:1 \/ 7.6:1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight Under Bar\u003c\/strong\u003e: 2.79 inches (70.87 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 8.62 inches (218.95 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Height\u003c\/strong\u003e: 11.04 inches (280.42 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Length\u003c\/strong\u003e: 4.02 inches (102.11 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Width\u003c\/strong\u003e: 2.38 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBar Width\u003c\/strong\u003e: 1.26 inches (32.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBar Thickness\u003c\/strong\u003e: 0.87 inches (22.10 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront of Base to Toggle Bar Tip\u003c\/strong\u003e: 4.61 inches (117.09 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Carbon Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandle Material\u003c\/strong\u003e: Carbon Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandle Color\u003c\/strong\u003e: Red\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish Coating\u003c\/strong\u003e: Zinc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 9.12 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31162902\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: DE-STA-CO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 578\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DE-STA-CO","offers":[{"title":"Default Title","offer_id":52038368035122,"sku":"578","price":340.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4898ed8d595fef866d17254f48410a19.jpg?v=1790025328","url":"https:\/\/voomisupply.com\/products\/de-sta-co-578-hold-down-toggle-clamp-4000-lb-vertical","provider":"Voomi Supply","version":"1.0","type":"link"}