Jan Nut SocketsThe correct application of torque is essential to most connector applications where Jam Nut receptacle connectors are used. The sealing components (usually an “O” 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 traditional “General Purpose” formed steel socket for non-torque specific applications.

CompositeCOMPOSITE 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.

AluminumALUMINUM 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 torquing.

STEEL JAM NUT SOCKETS

SteelAlso 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 torquing 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.

Jam Nut Sockets

TYPICAL JAM NUT SOCKET PART NUMBER BREAKDOWN

BT – J –XXXXXX
Basic P/NSize Designator
(see chart below)
Material:
Blank = Composite
AL = Aluminum
S = Steel
Special Configuration:
Blank = Standard
1Thru X = Non-Standard

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

DMC Part Number
Fits Jam Nut Size: Inches
Fits Jam Nut Size: Millimeters
Square Drive
Outside
Diameter Reference
BT-J-117
.608 to .62815.41 to 15.951/4.914
BT-J-118*
.628 to .64915.95 to 16.481/4.955
BT-J-120
.671 to .69317.04 to 17.601/4.010
BT-J-121
.693 to .71717.60 to 18.211/41.04
BT-J-122*
.717 to .74118.21 to 18.821/41.07
BT-J-123
.741 to .76518.82 to 19.431/41.10
BT-J-124
.765 to .79119.43 to 20.091/41.13
BT-J-125
.791 to .81820.09 to 20.771/41.16
BT-J-126
.818 to .84520.77 to 21.461/41.19
BT-J-127
.845 to .87321.46 to 22.171/41.22
BT-J-128
.873 to .90222.17 to 22.911/41.26
BT-J-129
.902 to .93322.91 to 23.691/41.29
BT-J-130
.933 to .96423.69 to 24.483/81.33
BT-J-131
.964 to .99624.48 to 25.293/81.36
BT-J-132
.996 to 1.03025.29 to 26.163/81.41
BT-J-133
1.030 to 1.06426.16 to 27.023/81.45
BT-J-134
1.064 to 1.10027.02 to 27.943/81.51
BT-J-135
1.100 to 1.13727.94 to 28.873/81.55
BT-J-136
1.137 to 1.17528.87 to 29.843/81.59
BT-J-137
1.175 to 1.21429.84 to 30.833/81.63
BT-J-138
1.214 to 1.25530.83 to 31.873/81.69
BT-J-139
1.255 to 1.29731.87 to 32.943/81.73
BT-J-140
1.297 to 1.34032.94 to 34.033/81.78
BT-J-141
1.340 to 1.38534.03 to 35.173/81.84
BT-J-142
1.385 to 1.43235.17 to 36.373/81.89
BT-J-143
1.432 to 1.48036.37 to 37.593/81.95
BT-J-144
1.480 to 1.52937.59 to 38.833/82.00
BT-J-145
1.529 to 1.58038.83 to 40.133/82.06
BT-J-146
1.580 to 1.63340.13 to 41.473/82.12
BT-J-147
1.633 to 1.68841.47 to 42.873/82.19
BT-J-148
1.688 to 1.74542.87 to 44.323/82.25
BT-J-149
1.745 to 1.80344.32 to 45.793/82.32
BT-J-150
1.803 to 1.86445.79 to 47.343/82.39
BT-J-151
1.864 to 1.92647.34 to 48.923/82.46
BT-J-152
1.926 to 1.99148.92 to 50.573/82.54
BT-J-153
1.991 to 2.05750.57 to 52.243/82.61
BT-J-154
2.057 to 2.12652.24 to 54.003/82.69
BT-J-155
2.126 to 2.19754.00 to 55.803/82.78
BT-J-156
2.197 to 2.27155.80 to 57.683/82.87
BT-J-157
2.271 to 2.34757.68 to 59.613/82.95
BT-J-158
2.347 to 2.42659.61 to 61.623/83.04
BT-J-159
2.426 to 2.50761.62 to 63.673/83.14
BT-J-160*
2.507 to 2.59163.67 to 65.813/83.24
BT-J-161
2.591 to 2.67865.81 to 68.023/83.34
BT-J-162
2.678 to 2.76968.02 to 70.333/83.44
BT-J-163
2.769 to 2.86070.33 to 72.643/83.54
BT-J-164
2.860 to 2.95672.64 to 75.083/83.66
BT-J-165
2.956 to 3.05575.08 to 77.593/83.77
BT-J-166
3.055 to 3.15777.59 to 80.183/83.89
BT-J-170*
3.457 to 3.55787.81 to 90.353/84.38
* Not available in composite material

General Purpose Jam Nut SocketsGENERAL PURPOSE JAM NUT SOCKETS

Formed Stainless Steel Jam Nut sockets are great for non-torque specific jam nut applications. They are plated for corrosion resistance, and have drive holes to accommodate a metal rod drive tool (P/N DW75).

GENERAL PURPOSE JAM NUT SOCKETS

DMC PartNumberFits Jam Nut
Size: Inches
Amphenol BCO
Part Number
Hex Ref.
Dim: Inches
Equivalent
Composite
CS8
.755 to .76311-6266-33/4″N/A
CS10
.880 to .88811-6266-57/8″BT-J-128
CS12
1.068 to 1.07711-6266-81 1/16″BT-J-134
CS14
1.194 to 1.20411-6266-101 3/16″BT-J-137
CS16
1.320 to 1.33111-6266-121 5/16″BT-J-140
CS18
1.446 to 1.45711-6266-141 7/16″BT-J-143
CS20
1.571 to 1.58011-6266-161 9/16″BT-J-145
CS22
1.696 to 1.70811-6266-181 11/16″BT-J-148
CS24
1.822 to 1.83511-6266-201 13/16″BT-J-150
CS22-1
2.011 to 2.02511-6266-232″BT-J-153
CS24-1
2.137 to 2.15111-6266-252 1/8″BT-J-155
CS32
2.640 to 2.68711-6266-332 5/8″BT-J-161 & BT-J-162
DMC1554
Set Includes All 12 Sockets Listed Above And DW75 Drive Rod.

ADJUSTABLE JAM NUT WRENCH

JR700 Adjustable WrenchThe JR700 adjustable jam nut wrench is a versatile tool for maintenance and low volume production. The rugged all steel construction makes this tool a good choice for heavy duty applications.

The tool may be adjusted to accommodate hex nuts from .75 inch to 3.25 inch (across flat) dimensions. The maximum working depth is 1.0 inch. This range accommodates most common connectors.

A standard 3/8 inch drive torque tool may be used in conjunction with this tool to limit the possibility of overtightening. If torque values require close tolerance accuracy, direct reading socketsare recommended.

TORQUE CONVERSION CHART

FOR JR700 TOOL USED WITH BT-ST-300D*
Diameter of
Part Being
Tightened
DESIRED TORQUE VALUE (in-lbs) (“D*”)
40
60
80
100
120
140
160
180
200
0.50″
22334556677889100111
0.75″
23344556687990101113
1.00″
23344557688091102114
1.50″
23354758708293105116
1.75″
24354759718394106118
2.00″
24364860728495107119
2.25″
24364860738597109121
2.50″
24374961738698110122
2.75″
25375062748799111124
3.00″
253850637588100113125
3.25″
253851637689101114127
TORQUE READING ON INSTRUMENT (“C*”)
*Formula can be found here.