Page 6 of Concrete Fasteners Catalog by Concrete Fastening Systems

4 p 888.498.5747 f 216.391.5352 www.confast.com DROP-IN A Drop-In anchor consists of a zinc plated steel tubular expansion shield and a solid, cone-shaped expander plug. The expander plug is case hardened and tempered to prevent galling and binding during expansion. The shield has four equally spaced slots for a portion of its length, the bottom part may be knurled. The shield also has a smooth, flangeless top that allows either flush or countersunk installation. the bottom lip of the shield is tapered to allow maximum depth and holding power. SIZE LENGTH DRILL BIT THRD. LENGTH BOLT DIA. PULL-OUT Values shown are average ultimate values and are offered only as a guide and are not guaranteed. A safety factor of 4:1 or 25% is generally accepted as a safe working load. Reference should be made in applicable codes for specific working ratio. Minimum embedment for satisfactory anchor performance is 4-1/2 bolt diameters. Deeper embedments will yield higher tension and shear capacity. TECHNICAL DATA 1/4" 1" 3/8" 7/16" 1/4" 2300 lb. 3/8" 1-9/16" 1/2" 5/8" 3/8" 4100 lb. 1/2" 2" 5/8" 1-3/16" 1/2" 6000 lb. 5/8" 2-1/2" 7/8" 1-3/16" 5/8" 8300 lb. 3/4" 3-3/16" 1" 1-3/16" 3/4" 13600 lb. TECHNICAL INFO Approvals: Listed by Underwriters Laboratories (UL), International Conference of Building Officials (ICBO), Meets or exceeds U.S. government G.S.A. Specification FF-S-325 Group Vlll, type 1. Applications: Medium duty into concrete. Installation: (1) Drill hole into concrete with a carbide tipped masonry drill bit conforming to ANSI B94, 12-77, matching the bit size with the outside diameter of the drop-in anchor being used. Make sure hole depth exceeds minimum embedment. (2) Clean out concrete dust from hole using a wire brush, compressed air or a blow out bulb. (3) Drive anchor into hole flush with the surface of the concrete. (4) Using the proper setting tool for the anchor, expand anchor by inserting the setting tool into the anchor and set with several solid hammer blows. The anchor is set properly when shoulder of setting tool is flush with the top of anchor. To set anchor below surface: Drill hole deeper than anchor length. Thread bolt into anchor. Hammer anchor into hole until bolt head is a desired depth. Remove bolt and set anchor with setting tool as described above. Anchor Spacing: The forces on a Drop-In Anchor are transferred to the material that it is installed in. If the anchors are installed too close together, it can cause an interaction of the forces, thus reducing the holfing power of the anchor. As a rule of thumb, the expansion industry has established a minimum standard of ten (10) anchor diameters for spacing between anchors and five (5) anchor diameters from an unsupported edge. When vibration or sudden impact are part of the load condition, spacing between anchors should be increased. Bolt Length: Bolt length equals thread length of anchor plus thickness of material to be fastened.

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