Section 55 of 103
54. Attachment, Fastener, Lock and Release Mechanism
Stable section ID: S05-CON-015-SECTION-55 · 15 content blocks
An Attachment is the controlled physical relationship or method through which one engineering entity is secured, supported, retained, or connected to another.
A Fastener is a discrete component or controlled feature used to establish or maintain an Attachment. Fasteners may include bolts, screws, pins, keys, clips, clamps, anchors, wedges, or approved equivalent mechanisms.
A Lock is a mechanism or state that prevents unintended separation, movement, rotation, release, or loss of engagement after the required connection condition has been achieved.
A Release Mechanism permits intentional unlocking, separation, removal, or disassembly under declared authority and safe conditions.
The architecture shall distinguish among:
initial engagement;
temporary capture;
alignment;
seating;
final fastening;
structural locking;
verification;
authorized release.
A component that appears attached shall not be assumed to be fully locked. The connection state shall be physically inspectable, measurable, or reliably detectable.
Fasteners should remain captive where loss, incorrect substitution, or dropped components could create safety or assembly risks. Release shall account for load state, temporary support, access authority, tool requirements, stored energy, and required digital-record updates.