Spring snaps interlocking stainless steel open 5/16 inch. dia. X length 3/4 inch. x 4-3/4. 3/4 inch, stainless steel spring snap, ideal for marine, industrial and agricultural use, excellent for applications involving repeated loading or fatigue, superior corrosion resistance, provides greater strength than comparable zinc and solid brass products, new design provides greater strength, safe Safe working Load 400 lb, do not use for overhead lifting, support of human weight, athletic or playground equipment, for safety consult manufacturer, inspect frequently, boxed loose. Safe Working Load 1100 pounds.