Holes in metal fixtures to be mounted should match the diameter specified in the table on the table below.
- Drill a hole in the base material using a carbide drill bit the same diameter as the nominal diameter of the anchor to be installed. Drill the hole to the specified embedment depth plus 1/2" minimum to allow the thread tapping dust to settle and blow it clean using compressed air. Overhead installations need not be blown clean. Alternatively, drill the hole deep enough to accommodate embedment depth and dust from drilling and tapping.
- Insert the anchor through the fixture and into the hole.
- Tighten the anchor into the base material until the hex washer head contacts the fixture.
- Do not use impact wrenches to install into hollow CMU.
Caution: Oversized holes in the base material will reduce or eliminate the mechanical interlock of the threads with the base material and will reduce the anchor's load capacity. Use a Titen HD screw anchor one time only. Installing the anchor multiple times may result in excessive thread wear and reduce load capacity.
Titen HD® Installation Information and Additional Data1
- The information presented in this table is to be used in conjunction with the design criteria of ACI 318 Appendix D.
- Tinst,max is the maximum permitted installation torque for the embedment depth range covered by this table for installations using a torque wrench. This is not applicable to other embedment depths published elsewhere in this catalog.
- Timpact,max is the maximum permitted torque rating for impact wrenches for the embedment depth range covered by this table. This is not applicable to other embedment depths published elsewhere in this catalog.
- Data for 5/8" anchor is only valid for THDB62 series.
Due to the full shank diameter and larger threads of the Titen HD® screw anchor, consideration needs to be given to specifying the appropriate diameter Titen HD anchor based on the fixture hole type to be used. The American Institute of Steel Construction (AISC) has established the following guidelines with regards to fixture hole sizing depending on the hole type:
- "Standard" fixture holes are 1/16" larger than the nominal anchor diameter.
- "Oversized" fixture holes are 1/8 -3/16" larger than the nominal anchor diameter, depending upon the specific anchor diameter.
Standard fixture hole
Oversized fixture hole
Use the following table to identify which diameter Titen HD® screw anchor to use based on the fixture hole type and diameter. In most cases where a smaller diameter Titen HD anchor is called out in comparison to the competitor's larger diameter anchor, the Titen HD anchor still generally provides allowable tension and shear load values comparable to or greater than those of the competitor's anchor.