| Attribute | Type | Defined By |
|---|
| item_number | INTEGER | structural_frame_item |
| item_name | label (STRING) | structural_frame_item |
| item_description | text (STRING) | structural_frame_item |
| life_cycle_stage | label (STRING) | structural_frame_product |
| fastener_grade | label (STRING) | fastener |
| nominal_diameter | positive_length_measure_with_unit (ENTITY) | fastener_simple |
| nominal_length | positive_length_measure_with_unit (ENTITY) | fastener_simple |
| length_of_shank | positive_length_measure_with_unit (ENTITY) | fastener_simple_bolt |
| bolt_preload | force_measure_with_unit (ENTITY) | fastener_simple_bolt |
| full_section_area | area_measure_with_unit (ENTITY) | fastener_simple_bolt |
| reduced_section_area | area_measure_with_unit (ENTITY) | fastener_simple_bolt |
| bolt_head_height | positive_length_measure_with_unit (ENTITY) | fastener_simple_bolt_circular_head |
| head_diameter | positive_length_measure_with_unit (ENTITY) | fastener_simple_bolt_circular_head |