Jam Nut Socket Tooling Guide Jam Nut Sockets The correct application of torque is essential to most connector applications where Jam Nut receptacle connectors are used. The sealing components (usually an ring) must be compressed, but not to the point of damage. Another consideration when tightening Jam Nuts is the thread strength. This is extremely important in the various types of aluminum and composite connectors. DMC Jam Nut Socket tools have been developed specially for the installation of Jam Nut receptacle connectors. They are available in a versatile composite construction which is an excellent choice for OEM assembly areas due to their light weight, and the non-marking surfaces, a durable machined aluminum series and the traditionalGeneral Purpos formed steel socket for non-torque specific applications. COMPOSITE JAM NUT SOCKETS A unique process was developed to mold this composite material which contains a higher percentage of fiber glass than is customarily used in conventional molding technology. This makes them as light and a s strong as possible. The material will not scratch plating, or damage the finish on cabinets, panels or bulkheads when properly used. ALUMINUM JAM NUT SOCKETS When a metal socket is required, the anodized aluminum series jam nut sockets are a good choice. They are machined to the same configuration as the composite jam nut sockets with the square hold drive for torqueing. STEEL JAM NUT SOCKETS Also available are formed Steel Jam Nut sockets. These are plated for corrosion resistance, and have drive holes to accommodate a metal rod, or similar, drive tool. Jam Nut Sockets are ideal for torqueing jam nuts on panels where several connectors are crowded together and in other tight spaces. We also recommend that you consider DMC Safe-T-Cable to secure Jam Nut receptacles where lock wire holes are provided. Page 1 of 4 Jam Nut Socket Tooling Guide TYPICAL JAM NUT SOCKET PART NUMBER BREAKDOWN BT - J - XXX XX X Material: Special Configuration: Size Designator Blank = Composite Basic P/N Blank = Standard (see chart below) AL = Aluminum 1Thru X = Non-Standard S = Steel To find the correct jam nut socket for your application, measure across the flats of the jam nut you are working with. Next, find the size range in the lower table. Listed beside it will be the socket you need. COMPOSITE OR METAL JAM NUT SOCKETS Outside DMC Part Number Fits Jam Nut Size: Inches Fits Jam Nut Size: Millimeters Square Drive Diameter Reference BT-J-117 .608 to .628 15.41 to 15.95 1/4 .914 BT-J-118* .628 to .649 15.95 to 16.48 1/4 .955 BT-J-120 .671 to .693 17.04 to 17.60 1/4 .010 BT-J-121 .693 to .717 17.60 to 18.21 1/4 1.04 BT-J-122 .717 to .741 18.21 to 18.82 1/4 1.07 BT-J-123 .741 to .765 18.82 to 19.43 1/4 1.10 BT-J-124 .765 to .791 19.43 to 20.09 1/4 1.13 BT-J-125 .791 to .818 20.09 to 20.77 1/4 1.16 BT-J-126 .818 to .845 20.77 to 21.46 1/4 1.19 BT-J-127 .845 to .873 21.46 to 22.17 1/4 1.22 BT-J-128 .873 to .902 22.17 to 22.91 1/4 1.26 BT-J-129 .902 to .933 22.91 to 23.69 1/4 1.29 BT-J-130 .933 to .964 23.69 to 24.48 3/8 1.33 BT-J-131 .964 to .996 24.48 to 25.29 3/8 1.36 BT-J-132 .996 to 1.030 25.29 to 26.16 3/8 1.41 BT-J-133 1.030 to 1.064 26.16 to 27.02 3/8 1.45 BT-J-134 1.064 to 1.100 27.02 to 27.94 3/8 1.51 BT-J-135 1.100 to 1.137 27.94 to 28.87 3/8 1.55 BT-J-136 1.137 to 1.175 28.87 to 29.84 3/8 1.59 BT-J-137 1.175 to 1.214 29.84 to 30.83 3/8 1.63 BT-J-138 1.214 to 1.255 30.83 to 31.87 3/8 1.69 BT-J-139 1.255 to 1.297 31.87 to 32.94 3/8 1.73 BT-J-140 1.297 to 1.340 32.94 to 34.03 3/8 1.78 BT-J-141 1.340 to 1.385 34.03 to 35.17 3/8 1.84 BT-J-142 1.385 to 1.432 35.17 to 36.37 3/8 1.89 BT-J-143 1.432 to 1.480 36.37 to 37.59 3/8 1.95 BT-J-144 1.480 to 1.529 37.59 to 38.83 3/8 2.00 BT-J-145 1.529 to 1.580 38.83 to 40.13 3/8 2.06 BT-J-146 1.580 to 1.633 40.13 to 41.47 3/8 2.12 Page 2 of 4