Pin (button, lug) for German soldier's Y-strap. For side straps (the rear strap had a longer pin). Leg height is 6 mm, total height 10 mm. Made of aluminum.
You need 2 pins for an Y-strap.
The same pin was used in harness for German gasmask canister. You neen 2 pins for one set of straps.
Price for 1 piece.