What is it?

[Unitedstatesofamerica1]

 

[cactusrat]

If I remember correctly. Off a canteen cover. It had a ball shape on a pin that snapped into the part you have. the ball/pin was on the top cover and the hole (yours) was on the cover/bag that held the canteen. I think it was from WWII.

 

[bowwinkles]

military canvas snap clip female end. //www.google.com/search?q=military+style+canvas+snap+clip&tbm=isch&source=iu&ictx=1&fir=bSOMEqXFKQhs_M%253A%252CfIxW1OcHhYNJ3M%252C_&usg=AFrqEzcvhlRxdKexn5ztwAP4VE68nR4PTA&sa=X&ved=2ahUKEwjj-_Kv_6TdAhVJ3VMKHRD_DQYQ9QEwCHoECAYQDA#imgrc=0Sf6bwYqPo4S7M:

 

[Reanm8er]

Aabsolutely guys. Used on everything from knapsacks to medics pouches. Not sure if it was used in WW1 but maybe?

 

[jewelerguy]

yep. half a snap closure as stated above

 

[Hawks88]

That’s a cool find.