Premier Manufacturing 320 & 320A Hinge Assemblies The 320 and 320A Hinge Assemblies from Premier Manufacturing are available with either rubber or poly bushings. Each assembly is sold as a pair of hinges only. These hinges are designed for 3-inch (76 mm) standard channel or square tubing. Brand: Premier ManufacturingLegacy #: 320 & 320ADimensions: See diagram photo Models Available: Model # Part # Description Parts Included (per hinge) 320 10000941 Pair of Hinges, Rubber Bushings 321B Bolt, 321C Locknut, 321D Flat Washer (2), 344 Bushing, 350 Bracket, 351 Bolt/Nut (2), 352 Taper Pin, 354 Housing, 359 Flange 320A 10000944 Pair of Hinges, Poly Bushings 321B Bolt, 321C Locknut, 321D Flat Washer (2), 344A Bushing, 350 Bracket, 351 Bolt/Nut (2), 352 Taper Pin, 354 Housing, 359 Flange Specifications: Max Gross Trailer Weight (Pair): 100,000 lbs. (45,359 kg) Unit Weight (Pair): 51.2 lbs. (23.2 kg) Replacement Part Specifications: Model # Inside Diameter Outside Diameter Length 344 Tapered Bore 3 1/2 in. 4 1/2 in. 344A Tapered Bore 3 1/2 in. 4 1/2 in. About Hinge Assemblies: Premier Manufacturing is the only company in the industry to offer adjustable hinge assemblies. These heavy-duty hinges are engineered with no metal-to-metal contact, riding entirely on bushings for enhanced durability. Some models support up to 150,000 lbs., making them among the toughest on the market. Optional Accessories: 344 Rubber Bushing 344A Polyurethane Bushing Selecting the Right Equipment: Determine gross trailer weight (GVWR) of towed trailers Determine maximum tongue weight Add a margin of safety based on operating conditions Browse the Premier product catalog accordingly For questions, please call 1 (800) 374-6488 or chat with us online!
