| 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 |
| screw_type | text (STRING) | fastener_simple_screw |
| screw_drive_type | text (STRING) | fastener_simple_screw |
| screw_point_type | text (STRING) | fastener_simple_screw |
| screw_head_height | positive_length_measure_with_unit (ENTITY) | fastener_simple_screw |
| full_section_area | area_measure_with_unit (ENTITY) | fastener_simple_screw |
| reduced_section_area | area_measure_with_unit (ENTITY) | fastener_simple_screw |
| absolute_taper | length_measure_with_unit (ENTITY) | fastener_simple_screw_tapered |
| relative_taper | ratio_measure_with_unit (ENTITY) | fastener_simple_screw_tapered |