Door Lock,Thick Slide Barrel Door Bolt Latch Heavy Duty Gate Lock Security Guard Hardware for Bedrooms/Bathrooms/Cupboards/Pet Gate and Storage Units(3.5 * 1.1 inches) - Amazon.com
1/2" Slide Bolt Lockable Latch
Chain Locks & Slide Bolts | National Hardware
Renovators Supply Manufacturing Slide Bolt Latch 3.5 in. Black Wrought Iron Ball Tip Style Slide Bolt with Mounting Hardware - Cabinet Accessories - Amazon.com