AHYM federal item identification guide code

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

 

Stand-alone formats

This    {{AHYM-FIIG-code/designation | A5 }}   renders as    5 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	5 mm (0.20 in) nominal
AHYM	Thread diameter	15 mm (0.59 in) min.
AHYM	Thread diameter	7.75 mm (0.305 in) max.