Concave Bottom Cup-Type Expansion Plugs seal by pressure exerted by the concave bottom against the walls of the plug. They are made standard from Carbon Steel and are available in 24 sizes, ranging from 3/8" - 3" in Nominal Diameter. (Brass, Aluminum and Galvanized Steel are also available. Please contact EFC International directly for information).
Unit of Measure
Specifications
Material |
N/A Heavy Duty Galvanized Steel |
Maximum Crown Height |
N/A 0.075 in |
Minimum Crown Height |
N/A 0.049 in |
Maximum Hole Diameter |
N/A 0.442 in |
Minimum Hole Diameter |
N/A 0.44 in |
Nominal Diameter (Decimal) |
N/A 0.437 in |
Maximum Overall Height |
N/A 0.208 in |
Minimum Overall Height |
N/A 0.168 in |
Maximum Outside Diameter |
N/A 0.449 in |
Minimum Outside Diameter |
N/A 0.447 in |
Steel Thickness |
N/A 0.042 in |
Features and Benefits
Features and Benefits |
N/A
For insertion, they should be driven on the inside bottom radius, and not from the top rim of the cup. The driving arbor should be 0.015/0.025" smaller than the ID of the plug, with a flat bottom to prevent contact with the concave bottom to prevent deforming this surface. Concave Bottom |
