It's a spring loaded corner from a 1/4 inch thick frame

Hello,

We believe you can use the 91-004 and 91-005 corner latches for your repair. The leg is 1/4" wide by 1/8" thick. These corners are self-locking, so you won't need to punch them. The top tilt corners would be the 95-026 and 95-027. Thanks for posting.