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  • Metal Threaded Adapters
Heat treated clips retain these metal threaded adapter inserts securely Inside tubular legs. Round and Square adapters are available for the following sizes and will fit most 16 GA. to 18 GA. tubes. Special Sizes are available upon request and require special ordering. We offer a wide range of Metal Threaded Adapter products.
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Item #

Fitting Tube Thickness

Tube Outer Diameter

Thread Size

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1155 N/A 16 gauge18 gauge N/A 3/4 in N/A 1/4 in - 20 3/8 in - 16 5/16 in - 18
1156 N/A 16 gauge18 gauge N/A 7/8 in N/A 1/4 in - 20 3/8 in - 16 5/16 in - 18
1157 N/A 16 gauge18 gauge N/A 1 in N/A 1/4 in - 20 3/8 in - 16 5/16 in - 18
1158 N/A 16 gauge18 gauge N/A 1 1/4 in N/A 1/4 in - 20 3/8 in - 16 5/16 in - 18
1186 N/A 16 gauge18 gauge N/A 1 3/8 in N/A 1/4 in - 20 3/8 in - 16 5/16 in - 18
1159 N/A 16 gauge18 gauge N/A 1 1/2 in N/A 1/4 in - 20 3/8 in - 16 5/16 in - 18
1187 N/A 16 gauge18 gauge N/A 1 3/4 in N/A 1/4 in - 20 3/8 in - 16 5/16 in - 18
1160 N/A 16 gauge18 gauge N/A 2 in N/A 1/4 in - 20 3/8 in - 16 5/16 in - 18
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CastersCasters
Level GlidesLevel Glides
Adjustment KnobsAdjustment Knobs
Metal Threaded Adapters and Tube ConnectorsMetal Threaded Adapters and Tube Connectors
Plastic Components and Tube ClosuresPlastic Components and Tube Closures
Seating ComponentsSeating Components
Polyurethane MoldingPolyurethane Molding
Fixture and Display ComponentsFixture and Display Components

MDI manufactures and distributes quality products including industrial and furniture casters, industrial and office furniture glides and levelers, tube closures, tube connectors, adapters, plastic and metal hardware components. We also stock and offer wide array of adjustments knobs and seating components (bases, arms, foam, wood). We can produce polyurethane molded parts along with custom injection molded parts specific to your needs.