(a) Use Codes 1, 2, 3, 4BC, 4RB, 5 (any). Each thread which complies with all of the requirements of a specification listed in table 164.023-5(a) is assigned Use Codes 1, 2, 3, 4BC, 4RB, and 5 (any).
Table 164.023-5(a)
[Use codes 1, 2, 3, 4BC, 4RB, 5(any)]----------------------------------------------------------------------------------------------------------------
Federal or military Ticket No. or size
specification Material Type Class range----------------------------------------------------------------------------------------------------------------V-T-285E....................... Polyester......... I or II 1 E, F, FF.V-T-295E....................... Nylon............. I or II A E, F, FF.MIL-T-43624A................... Polyester......... ................... .................. 24 through 12.MIL-T-43548C................... Polyester covered ................... .................. 24 through 12.
only.----------------------------------------------------------------------------------------------------------------
(b) Use Code 4B. Each thread which meets the requirements of Federal Specifications V-T-295, Type II, Class A, number size 4, is assigned Use Code 4B.