Marine Grade Double Turn Button Stud - Nickel Plated Brass are also known as Twist Lock & Common Sense Fasteners. These Dot® Brand Fasteners are by far our favourite positive locking, non-knuckle busting fastener. Assembled with a spring attatched knob or button which holds it under tension until turned by hand. Accidental openings are thus prevented. This fastener's neck is "Double" the length of a "Standard" turn button stud allowing for thicker material.
Sold each.