AHYM federal item identification guide code

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AHYM is the Federation Item Identification Guide code for the “thread diameter” specification.

Definition The length of a straight line which passes through the center of a threaded shaft, and terminates at the outer circumference.
Instructions Enter the applicable Reply Codes from Table 1 below, followed by the numeric value.
Note The numeric value must be entered in millimetres.
Table 1
Code Defintion
A Nominal
B Minimum
C Maximum

Examples[edit source]

 
Stand-alone formats
This →   {{AHYM-FIIG-code/designation | A5 }}   renders as →  mm (0.20 in) nominal
This →   {{AHYM-FIIG-code/designation | B15 }}   renders as →   15 mm (0.59 in) min.
This →   {{AHYM-FIIG-code/designation | C7.75 }}   renders as →   7.75 mm (0.305 in) max.
 
In “Technical Characteristics” table formats
This →   {{specification-table row | AHYM | A5 }}   and;
This →   {{specification-table row | AHYM | B15 }}   and;
This →   {{specification-table row | AHYM | C7.75 }}   renders as:
Code Specification Designation
AHYM Thread diameter mm (0.20 in) nominal
AHYM Thread diameter 15 mm (0.59 in) min.
AHYM Thread diameter 7.75 mm (0.305 in) max.