{"product_id":"hejnar-manfrotto-501-503-arca-swiss-conversion-ada","title":"Arca-Swiss Conversion Adapter Set for Manfrotto 501 and 503 Pro Video Heads","description":"\u003c!-- ===================== GRAY HEADER BANNER ===================== --\u003e \n\u003cdiv style=\"background:#f8f9fa; border-left:4px solid #1a1a1a; padding:15px; margin-bottom:25px; font-family:Arial, sans-serif;\"\u003e \n    \u003cstrong style=\"font-size:18px; color:#1a1a1a;\"\u003eHejnar Photo – M577-350 Manfrotto 501\/503 to Arca-Swiss Adapter Set\u003c\/strong\u003e \n\u003c\/div\u003e \n\n\u003c!-- ===================== H1 SEO HEADLINE ===================== --\u003e \n\u003ch1 style=\"font-family:Arial, sans-serif; font-size:24px; color:#111; margin-bottom:20px; line-height:1.3; font-weight:700;\"\u003e\n    Arca-Swiss Conversion Adapter Set for Manfrotto 501 and 503 Pro Video Heads\n\u003c\/h1\u003e \n\n\u003c!-- ===================== INTRODUCTORY OVERVIEW ===================== --\u003e \n\u003cdiv style=\"font-family:Arial, sans-serif; line-height:1.6; color:#333; margin-bottom:25px;\"\u003e \n    \u003cp style=\"font-size:15px;\"\u003e \n        The \u003cstrong\u003eHejnar Photo M577-350 Adapter Set\u003c\/strong\u003e is a precision-engineered solution designed to bring universal Arca-Swiss compatibility to your Manfrotto video support system. Specifically engineered for heads utilizing the \u003cstrong\u003e3433PL (501PL)\u003c\/strong\u003e mounting plate system—including the 501, 503, 3433, 3460, and 3465—this comprehensive kit provides a rock-solid, modular bridge between professional video heads and photography gear. Proudly CNC-machined in the USA from solid 6061-T6 aluminum, it allows you to utilize Arca-style plates, L-brackets, and accessories without compromising the smooth fluid movement of your Manfrotto head.\n    \u003c\/p\u003e \n\u003c\/div\u003e \n\n\u003chr style=\"border:0; border-top:1px solid #eee; margin:25px 0;\"\u003e \n\n\u003c!-- ===================== SAE TECHNICAL SPECIFICATIONS ===================== --\u003e \n\u003cdiv style=\"font-family:Arial, sans-serif; margin-bottom:25px;\"\u003e \n    \u003ch2 style=\"font-size:20px; color:#111; margin-bottom:15px; border-bottom:2px solid #1a1a1a; padding-bottom:5px; font-weight:600;\"\u003eSAE Technical Specifications\u003c\/h2\u003e \n    \u003cdiv style=\"display: flex; gap: 20px; flex-wrap: wrap;\"\u003e\n        \u003cdiv style=\"flex: 1; min-width: 280px;\"\u003e\n            \u003ch3 style=\"font-size:16px; margin-bottom:10px;\"\u003eAdapter Plate Specs\u003c\/h3\u003e\n            \u003cul style=\"padding-left:20px; line-height:1.6; font-size:14px; color:#333;\"\u003e \n                \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Manfrotto 501, 503, 3433, 3460, 3465, and 577 systems.\u003c\/li\u003e \n                \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 3.50 inches (89 mm).\u003c\/li\u003e \n                \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.2 oz (120g).\u003c\/li\u003e \n                \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Two sets of outside holes tapped 10-32, spaced 30mm and 45mm apart.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e CNC-machined solid 6061-T6 Aluminum.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex: 1; min-width: 280px;\"\u003e\n            \u003ch3 style=\"font-size:16px; margin-bottom:10px;\"\u003eF63b Clamp Specs\u003c\/h3\u003e\n            \u003cul style=\"padding-left:20px; line-height:1.6; font-size:14px; color:#333;\"\u003e \n                \u003cli\u003e\n\u003cstrong\u003eJaw Length:\u003c\/strong\u003e 3.25 inches (82.5 mm).\u003c\/li\u003e \n                \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.7 oz (135g).\u003c\/li\u003e \n                \u003cli\u003e\n\u003cstrong\u003eSafety Features:\u003c\/strong\u003e Integrated relief grooves prevent gear from sliding out if the clamp is not fully closed.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eKnob Design:\u003c\/strong\u003e Captive, one-piece design that is dust and sand resistant.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\u003c\/div\u003e \n\n\u003chr style=\"border:0; border-top:1px solid #eee; margin:25px 0;\"\u003e \n\n\u003c!-- ===================== INSTALLATION STEPS ===================== --\u003e \n\u003cdiv style=\"font-family:Arial, sans-serif; margin-bottom:25px;\"\u003e \n    \u003ch2 style=\"font-size:20px; color:#111; margin-bottom:15px; border-bottom:2px solid #1a1a1a; padding-bottom:5px; font-weight:600;\"\u003eDetailed Installation Instructions\u003c\/h2\u003e \n    \u003cp style=\"font-size:14px; margin-bottom:12px; color:#333;\"\u003e \n        Modernize your video head in just a few simple steps using the included hardware: \n    \u003c\/p\u003e \n    \u003col style=\"padding-left:20px; line-height:1.8; font-size:14px; color:#333;\"\u003e \n        \u003cli\u003e\n\u003cstrong\u003eSecure the Adapter Plate:\u003c\/strong\u003e Slide the Hejnar adapter plate into your Manfrotto head just as you would a standard 501PL plate.\u003c\/li\u003e \n        \u003cli\u003e\n\u003cstrong\u003eMount the Arca-Swiss Clamp:\u003c\/strong\u003e Use the included alignment pins to set your preferred orientation (parallel or perpendicular) and secure the F63b clamp to the plate.\u003c\/li\u003e \n        \u003cli\u003e\n\u003cstrong\u003eLock Rotation:\u003c\/strong\u003e Tighten the clamp to the plate; the integrated pins and secondary alignment holes prevent any accidental rotation under heavy camera loads.\u003c\/li\u003e \n    \u003c\/ol\u003e \n\u003c\/div\u003e \n\n\u003chr style=\"border:0; border-top:1px solid #eee; margin:25px 0;\"\u003e \n\n\u003c!-- ===================== KEY FEATURES SECTION ===================== --\u003e \n\u003cdiv style=\"font-family:Arial, sans-serif; margin-bottom:25px;\"\u003e \n    \u003ch2 style=\"font-size:20px; color:#111; margin-bottom:15px; border-bottom:2px solid #1a1a1a; padding-bottom:5px; font-weight:600;\"\u003eQuick Overview \u0026amp; Key Features\u003c\/h2\u003e \n    \u003cul style=\"padding-left:20px; line-height:1.8; font-size:14px; color:#333;\"\u003e \n        \u003cli\u003e\n\u003cstrong\u003eComplete Modular System:\u003c\/strong\u003e The Arca-style clamp can be detached from the plate and used independently on other equipment like rails or monopods.\u003c\/li\u003e \n        \u003cli\u003e\n\u003cstrong\u003eRotational Ergonomics:\u003c\/strong\u003e Included alignment pins allow the clamp to be mounted in multiple orientations to clear cables or suit your specific shooting style.\u003c\/li\u003e \n        \u003cli\u003e\n\u003cstrong\u003eField Reliability:\u003c\/strong\u003e The captive knob design stops at its maximum opening, ensuring it cannot be lost in the field.\u003c\/li\u003e \n        \u003cli\u003e\n\u003cstrong\u003ePrecision Build:\u003c\/strong\u003e Hard-coat black anodized finish on the plate and clamp provides superior resistance to abrasion and corrosion.\u003c\/li\u003e \n    \u003c\/ul\u003e \n\u003c\/div\u003e \n\n\u003chr style=\"border:0; border-top:1px solid #eee; margin:25px 0;\"\u003e \n\n\u003c!-- ===================== PRODUCT DESCRIPTION ===================== --\u003e \n\u003cdiv style=\"font-family:Arial, sans-serif; line-height:1.6; color:#333;\"\u003e \n    \u003ch2 style=\"font-size:20px; color:#111; margin-bottom:15px; border-bottom:2px solid #1a1a1a; padding-bottom:5px; font-weight:600;\"\u003eComprehensive Product Description\u003c\/h2\u003e \n    \u003cp style=\"font-size:14px; margin-bottom:15px;\"\u003e \n        The \u003cstrong\u003eHejnar Photo M577-350 Manfrotto to Arca-Swiss Adapter Set\u003c\/strong\u003e is the definitive upgrade for professionals who demand the smooth, fluid control of a video head combined with the modular security of the Arca-Swiss ecosystem. By converting your 501, 503, or 577 series head, you bypass the inherent limitations of proprietary sliding plates, ensuring your micron-level gear adjustments translate perfectly to your final capture.\n    \u003c\/p\u003e \n    \u003cp style=\"font-size:14px; margin-bottom:15px;\"\u003e \n        Machined from a solid block of aircraft-grade \u003cstrong\u003e6061-T6 aluminum\u003c\/strong\u003e, the structural integrity of this system ensures zero flex, even when supporting heavy professional video payloads. The F63b clamp features a sophisticated \"tongue-in-pocket\" design that protects its internal threaded stud from dust and grit, while keeping the jaws perfectly aligned with your plate's geometry. Integrated safety stop relief grooves provide an essential fail-safe, preventing your gear from free-falling if the clamp is accidentally loosened.\n    \u003c\/p\u003e \n    \u003cp style=\"font-size:14px;\"\u003e \n        Proudly made in the USA, this component embodies the technical excellence and rigorous tolerances that distinguish Hejnar Photo from mass-produced alternatives. It is an intelligent, high-value investment that modernizes your existing support architecture for ultimate reliability across all your tripod and monopod rigs.\n    \u003c\/p\u003e \n\u003c\/div\u003e","brand":"Hejnar Photo","offers":[{"title":"Default Title","offer_id":67701611626601,"sku":"M577-350F63b","price":110.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/1278\/9353\/files\/M577-350F63b-2.jpg?v=1792111433","url":"https:\/\/www.hejnarphotostore.com\/products\/hejnar-manfrotto-501-503-arca-swiss-conversion-ada","provider":"Hejnar Photo","version":"1.0","type":"link"}