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 0.103 in |
Minimum Crown Height |
N/A 0.067 in |
Maximum Hole Diameter |
N/A 1.005 in |
Minimum Hole Diameter |
N/A 1.002 in |
Nominal Diameter (Decimal) |
N/A 1 in |
Maximum Overall Height |
N/A 0.33 in |
Minimum Overall Height |
N/A 0.29 in |
Maximum Outside Diameter |
N/A 1.012 in |
Minimum Outside Diameter |
N/A 1.01 in |
Steel Thickness |
N/A 0.048 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 |
