Color (Duplicate): Silver Color: Silver Condition: New Diameter: 1/4″ Drive Style: Drop In Anchor Setting Tool Head Type: No Head Thread Direction: Right Hand Finish: Zinc Plated Head Style: Dome Length: 1″ Material (Duplicate): Zinc Plated Steel Material: Steel Part Number: 787392588506 Pattern: Drop-In Anchors Product Type: Drop In Anchors Size: 1/4″-20 x 1″ Size System: US Size Type: Regular System of Measurement: Inch Thread Direction: Right Hand Thread Pitch: 20 Per Inch Thread Size: 1/4″-20 Thread Standard: UNC Thread Type: Coarse Tolerance (IFI): Actual measurements may vary slightly /- depending on production run within IFI Tolerances Weight: 1 lb Used in flush-mount applications in solid base materials Installed crimped side down in a pre-drilled hole Require a setting tool for proper installation Zinc adds a layer of corrosion resistance to the drop-in anchors Zinc plated steel is not suitable for extreme environment use A Drop In anchor is a female (internal) threaded concrete anchor, often installed overhead that runs flush with the surface of concrete or stone. Thread Diameter – Thread Pitch x Length of Anchor Thread Diameter: Drop-In Anchor Length: Drill (Hole) Size: Internal Threaded Length: 1/4″ 1″ 3/8″ 1/2″ 3/8″ 1-9/16″ 1/2″ 13/16″ 1/2″ 2″ 5/8″ 1-1/4″ 5/8″ 2-1/2″ 7/8″ 2″ 3/4″ 3-1/8″ 1″ 2″