Torque-limiting fastener and coupling

A torque-limiting drive shell, comprising:

• a shell base wall, including
• drive-off surfaces on an interior side of the shell base wall and facing a first circumferential direction and extending substantially axially, and
• drive-on surfaces on an interior side of the shell base wall and facing a second circumferential direction and extending substantially obliquely;
• and
• a shell skirt extending axially away from the shell base wall.

A torque-limiting driven fastener, comprising:

• a fastener base wall, including
• driven-on surfaces on an exterior side of the fastener base wall and facing in a first circumferential direction,
• driven-off surfaces on an exterior side of the fastener base wall and facing in a second circumferential direction,
• drive tang pockets on an exterior side of the fastener base wall and circumferentially between the exterior driven-on and driven-off surfaces, and
• driven-on beam pockets on an exterior side of the fastener base wall and circumferentially interspersed with the drive tang pockets;
• and
• a radially outer wall extending in an axial direction away from the fastener base wall.

A torque-limiting clutch, comprising:

• a plate;
• driven beams extending radially outwardly and cantilevered with respect to the plate and having legs extending circumferentially and feet extending circumferentially and axially inwardly at an oblique angle;
• and
• drive tangs extending radially and axially outwardly with respect to the plate.

A method for a nested assembly of a torque-limiting fastener comprising:

• providing a barb and seal hose connector having a rearward end, a forward end having a neck and a flare extending about the neck, the flare defining a contact surface, and a longitudinal axis extending between the rearward and forward ends;
• positioning a driven fastener over the forward end of the barb and seal hose connector, the driven fastener having an internal shoulder which engages with the contact surface of the flare, the driven fastener having a base wall including a drive-tang pocket, a driven-on beam pocket, and a hub;
• positioning a clutch over the forward end of the barb and seal hose connector, the clutch having a driven beam and a drive tang that engage with at least one of each of the drive-tang pocket and the driven-on beam pocket;
• positioning a drive shell over the forward end of the barb and seal hose connector;
• and
• assembling a hose to the barb and seal hose connector.