An image of the top of Apollo 11 CM from heroicrelics dscc9638 and dscc9660.
What were these bent clamps (marked with green arrows by me) used for?
Space Exploration Stack Exchange is a question and answer site for spacecraft operators, scientists, engineers, and enthusiasts. It only takes a minute to sign up.Sign up to join this community
That's the main parachute retention system in the Block II command modules.
The Block I main-parachute retention flaps were replaced by a series of fabric- covered, spring steel straps attached to the upper-deck structure. These straps were then chain-laced by an interlocking length of cord to loops sewed to the face of the main- parachute deployment bag (fig. A-12).
Not labeled but shown here
From Apollo Spacecraft and Systems Familiarization training course (annotations mine)
Upper and lower sets of straps are visible in this section of the image from this question: Is it the Apollo CM "flowerpot parachute attachment fitting"?