Steel Female-Threaded Anchors for Concrete
A zinc plating provides corrosion resistance in wet environments. Also known as drop-in anchors, these are often used for overhead applications because the anchor's internal plug expands in four directions to hold the anchor firmly inside the hole before inserting a threaded rod or bolt. To install, place the anchor into the hole, insert the required installation tool (sold separately) into the anchor, and drive with a hammer until the thicker portion of the tool makes contact with the anchor. Pull-out strength and shear strength values are 25% of the ultimate values for normal-weight concrete.
Anchors can be installed below the base of the surface as well as flush with the surface. Use those with a coil thread to support temporary concrete formwork. Their threads are shallow and widely spaced for quick threading with a compatible rod or bolt.
Flanged anchors are easy to set in holes that are longer than the anchor. They sit flush with the surface when installed.
For technical drawings and 3-D models, click on a part number.
Strength, lbs. | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size  | Lg. | Drill Bit Size | Min. Installation Dp. | Dia. | Thread Dp. | Pull-Out | Shear | Tested In | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc-Plated Carbon Steel | ||||||||||||
Anchor with Coil Threads | ||||||||||||
| 1/2"-6 | 2" | 5/8" | 2" | 5/8" | 13/16" | 1,440 | 1,600 | 4,000 psi Concrete | FM Approved, UL Listed | 1 | 000000000 | 00000 |
| 3/4"-4 1/2 | 3 3/16" | 1" | 3 3/16" | 1" | 1 3/8" | 2,350 | 3,920 | 4,000 psi Concrete | FM Approved, UL Listed | 1 | 000000000 | 00000 |
Anchor with UNC Threads | ||||||||||||
| 1/4"-20 | 1" | 3/8" | 1" | 3/8" | 7/16" | 495 | 530 | 4,000 psi Concrete | __ | 25 | 000000000 | 00000 |
| 3/8"-16 | 1 9/16" | 1/2" | 1 9/16" | 1/2" | 5/8" | 1,045 | 1,145 | 4,000 psi Concrete | FM Approved, UL Listed | 10 | 000000000 | 0000 |
| 1/2"-13 | 2" | 5/8" | 2" | 5/8" | 13/16" | 1,440 | 1,600 | 4,000 psi Concrete | FM Approved, UL Listed | 10 | 000000000 | 00000 |
| 5/8"-11 | 2 1/2" | 7/8" | 2 1/2" | 7/8" | 1 3/16" | 1,860 | 3,095 | 4,000 psi Concrete | FM Approved, UL Listed | 4 | 000000000 | 00000 |
| 3/4"-10 | 3 3/16" | 1" | 3 3/16" | 1" | 1 3/8" | 2,350 | 3,920 | 4,000 psi Concrete | FM Approved, UL Listed | 1 | 000000000 | 0000 |
Flanged Anchor with UNC Threads | ||||||||||||
| 1/4"-20 | 5/8" | 3/8" | 5/8" | 3/8" | 3/8" | 285 | 415 | 4,000 psi Concrete | FM Approved, UL Listed | 10 | 000000000 | 0000 |
| 1/4"-20 | 1" | 3/8" | 1" | 3/8" | 7/16" | 495 | 530 | 4,000 psi Concrete | FM Approved, UL Listed | 10 | 000000000 | 0000 |
| 3/8"-16 | 3/4" | 1/2" | 3/4" | 1/2" | 13/32" | 530 | 1,055 | 4,000 psi Concrete | FM Approved, UL Listed | 10 | 000000000 | 0000 |
| 3/8"-16 | 1 9/16" | 1/2" | 1 9/16" | 1/2" | 5/8" | 1,045 | 1,145 | 4,000 psi Concrete | FM Approved, UL Listed | 10 | 000000000 | 0000 |
| 1/2"-13 | 1" | 5/8" | 1" | 5/8" | 5/8" | 840 | 1,220 | 4,000 psi Concrete | FM Approved, UL Listed | 1 | 000000000 | 0000 |
| 1/2"-13 | 2" | 5/8" | 2" | 5/8" | 13/16" | 1,440 | 1,600 | 4,000 psi Concrete | FM Approved, UL Listed | 5 | 000000000 | 0000 |