[Grant Bowker]

From the Chevrolet parts book No. 175 that covers the range of Chevrolet CMT trucks from C8 to C60L and CGT, Tow rope assembly 1798795 (DND #1136) 3/8" diamenter was originally supplied for C8 and C15. Tow rope assembly 5802867 1/2" diameter was later supplied for C8, C15 and C15A and tow rope assembly 1798796 (DND #1135) 5/8" diameter was supplied for C30, C60S, C60l and CGT. no lengths are given.
From parts book C15A-04 for the Chevrolet 15cwt 4x4 - the tow rope 5802867 is stated to be 1/2" cable (no length stated) and the later hooks are part DND#1185 (they also have a Chevrolet part # 5268915).
From parts book C60S-03 for the Chevrolet 3 ton 143"WB the tow rope assembly 1798796 is stated to be 5/8" cable - no length given. Same hooks used as on C15A.
From parts book CGT-03 for the Chevrolet Gun Tractor the tow rope assembly is the same as for the C60S.
From parts book C60X-04 for the Chevrolet 3 ton 6x6 the tow rope assembly is the same as for the C60S.
From the Ford parts book S.E.-39-42 which covers the full range of Ford CMP trucks 8cwt to 60cwt and FGT - tow ropes C011D-17186A and C011D-17186B are 3/8" diameter, unspecified length - used on F8, F15 and F15A. Tow Rope C01Q-17186 is 5/8 diameter, used on F30, F60S, F60L, F60H and FGT, no length given.
From parts book FSC2-01 for the Ford lynx II Scout Car the steel tow rope C011D-17186B is stated 15' long, no diameter given.
From the parts book FUC-02 for the Universal Carrier Mk I* the tow rope assembly has part number C01Q-17187 (U.K. #25485) but no diameter or length is given.
Conclusion:The Ford tow rope assembly C011D-17186B uses 3/8" diameter cable and is 15' long for 8 and 15 cwt trucks. Confirmed by parts book F15A-01.