I wish I had found these before I redid my cabinets. These are a copy (but not necessarily any worse and maybe better) of the Southco latches that SMB puts in their cabinets. The Southco's sell for $20-30 usually. This company has them for $9 apiece and even cheaper if you buy bulk, free shipping!
I'm ordering a couple now for a project and will update with a review.
Slam Latch Hatch Round Pull Latch Replacement Southco M1 61 for RV Marine Boat | eBay
8 pack that looks like a screamin' deal.
8 Pcs Slam Latch Hatch Round Pull Latch Replacement Southco M1 61 RV Marine Boat | eBay