From the Manufacturer
Double joist hangers are designed to connect joists to headers in a variety of framing applications. Double 2x6 hangers will hole (2) 2x6 or 8 inch lumber. Use all specified fasteners. Joist nails must be driven at a 30 degree to 45 degree angle through the joist or truss into the header to achieve listed loads. Standard length “double shear” nails must be used to achieve listed load values. 16d sinkers (9 gauge x 31⁄4˝) may be used where 10d commons are specified with no load reduction. Codes: ESR-1881, FL9835, FL570, FL821, Dade County, FL 07-0419.01, Dade County, FL 07-0214.20 & Dade County, FL 06-0921.05. Fastener schedule: header - (4) 16d nails, joist - (4) 16d nails. Allowable loads (lbs.) DF-L/SP: Floor 100% - 1015, Roof 115% - 1170, Roof 125% - 1220, Uplift 160% - 1355. Code ref.: 6, F5, F15, D7.
2 x 2 - 6, Triple Zinc, 8 Double Slant Nail Hanger, 18 Gauge Galvanized Steel, Offers Double Shear Nailing, Allows For 30-45 Degree Nailing Through Both Joist & Header, Resulting In Higher Loads & Less Nailing, Slant Nailing Also Eliminates The Need For Shorter Joist Nails, Install Using Eight 10D Nails, UPC: 0 8942 10146 8, Reference #Lus26-2z.