ISO 4580-2021-11 pdf free download – Aerospace — Drives, internal, TORX® PARALOBE® driver bit — Geometrical definition, gaging and technical requirements.
This document specifies basic dimensions,characteristics and engineering requirements for TORXRPARALOBER1) driver bits used with aerospace fasteners.
2Normative references
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references only the edition cited applies.Forundated references, the latest edition of the referenced document(including any amendments) applies.ISO 4579,Aerospace —Drives, internal, TORXR PARALOBERdrive —Geometrical definition, gaging andtechnical requirements
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
IlS0 and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO online browsing platform: available at https://www.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1
driver bit
tool to induce a torque into a fastener’s recess (3.2)3.2
recess
geometry in a fastener that allows attaching a tool in order to induce a torque to enable tightening anduntightening of a fastener
4Basic driver bit configuration
4.1General
The basic driver bit configuration shall be in accordance with Figure 1. Driver bits according to thisdocument shall be used in conjunction with fasteners having an internal TORXRPARALOBERdriveaccording to ISO 4579.ISO 4580 pdf download.