Only because size changes this answer
Add one known-size object.
Place a US quarter or colorful wallet-size card flat beside the hole on the same surface. Photograph straight on with both fully visible. Do not photograph payment or ID details.
Show us the exact hole you intend to use. Receive one highly considered answer, or a dignified refusal to guess.
Before you photograph
Place one measuring witness flat beside the hole.Resized before upload · processed in memory · never retained
Analyzing photo
Photo analysis
Photo bytes are processed in memory and discarded after this request.
Two small matters
Scale evidence
Only because size changes this answer
Place a US quarter or colorful wallet-size card flat beside the hole on the same surface. Photograph straight on with both fully visible. Do not photograph payment or ID details.
Your result
Recommended screw
Confidence: guarded
Fastener and anchor
No separate anchor for this profile. Confirm the exact compatible screw with the anchor maker.
Drill bit:
What you need
Before you drill
Your result
What we can tell you
For heavy, overhead, structural, wet, crumbling, electrical-adjacent, or plumbing-adjacent work: pause and ask a qualified person.
Evidence rejected