A  Complete Part Number is specified as follows:

                  MTxyyy/L/C1/C2

Where      x = cable type (MT for Standard series, MTL for Lightweight series)
                  yyy = cable type (265 or 340XR)
                  L   =   Length (in Inches or millimetres, see below)
                  C1  =  Connector 1 Designator
                  C2  =  Connector 2 Designator

Example 1 - a 460 inch long Cable Assembly with a Replaceable SMA
male on one end and a Replaceable TNC male on the other end would have the
Part Number MT340/in460/48530/48555

Example 2  - a 430 millimetre long Cable Assembly with a Replaceable SMA
male on one end and a Replaceable TNC male on the other end would have the
Part Number MTL330/mm430/48530/48555

Marking

Cable Assemblies are marked  in the center or on each end depending on Cable Assembly Length as follows:

Times Microwave Systems
MFG: xxxxx (TMS manufacturing CAGE Code, as applicable) 
MILTECHxxx/xxx/xxxxx/xxxxxx

Length Tolerances

+0.5" / -0” (12.7mm) for Cable Assemblies less than 5 ft (1524mm)
+1" / -0” (25.4mm) for Cable Assemblies between 5 ft (1524mm) and 10 ft (2540mm)
+1% / -0% for Cable Assemblies Greater than 10 ft (2540mm)
+4% / -0% for Cable Assemblies with time delay or phase matching requirements

Testing

Each Cable Assembly is  measured  for Insertion Loss and VSWR  over the Test Frequency Range.