Titen HD® Heavy-Duty Screw Anchor

The original high-strength screw anchor for use in cracked and uncracked concrete, as well as uncracked masonry. The Titen HD® offers low installation torque and outstanding performance. Designed and tested in dry, interior, non-corrosive environments or temporary outdoor applications, the Titen HD® demonstrates industry-leading performance even in seismic conditions.

Key Features

Code listed under IBC/IRC in accordance with ICC-ES AC193 for cracked and uncracked concrete per ICC-ES ESR-2713
Code listed under IBC/IRC in accordance with ICC-ES AC106 for masonry per ICC-ES ESR-1056
Qualified for static and seismic loading conditions
Thread design undercuts to efficiently transfer the load to the base material
Standard fractional sizes
Specialized heat-treating process creates tip hardness for better cutting without compromising the ductility
No special drill bit required — designed to install using standard-sized ANSI tolerance drill bits
Testing shows the Titen HD® installs in concrete with 50% less torque than competitor anchors
Hex-washer head requires no separate washer and provides a clean installed appearance
Removable — ideal for temporary anchoring (e.g., formwork, bracing) or applications where fixtures may need to be moved (reuse of the anchor to achieve listed load values is not recommended)

Material

Carbon steel

Finish

Zinc-plated or mechanically galvanized

Installation

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 minimum hole depth overall (see table below right) 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 the 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.

Caution

Holes in metal fixtures to be mounted should match the diameter specified in the Installation Information table. Use a Titen HD® screw anchor one time only — installing the anchor multiple times may result in excessive thread wear and reduce load capacity.
Do not use impact wrenches to install into hollow CMU.
Oversized holes in base material will reduce or eliminate the mechanical interlock of the threads with the base material and reduce the anchor’s load capacity.

Product Notes

Mechanical galvanizing meets ASTM B695, Class 65, Type 1. Intended for some pressure-treated wood sill plate applications. Not for use in other corrosive or outdoor environments. See Technical Notes for corrosion information.

Technical Information

Titen HD® Design Information

Codes

ICC-ES ESR-2713 (Concrete) – Also en Español
ICC-ES ESR-1056 (CMU)
City of Los Angeles RR25741 (Concrete)
City of Los Angeles RR25560 (CMU)
Florida Statewide Product Approval FL15730.7
Factory Mutual 3017082, 3035761 and 3043442

Related Literature

Anchoring and Fastening Systems for Concrete and Masonry Catalog 2016-2017

C-A-2016

C-A-2016 is a 2-year, 340-page catalog detailing Simpson Strong-Tie products used for anchoring into concrete and masonry. Updates include new anchor products within adhesives and mechanical anchors.

Catalog

Product Information Tables

Titen HD® Anchor Product Data — Zinc Plated
Size (in.)	Model No.	Drill Bit Dia. (in.)	Wrench Size (in.)	Quantity
Size (in.)	Model No.	Drill Bit Dia. (in.)	Wrench Size (in.)	Box	Carton
1/4 x 1 7/8	THDB25178H	1/4	3/8	100	500
1/4 x 2 3/4	THDB25234H	1/4	3/8	50	250
1/4 x 3	THDB25300H	1/4	3/8	50	250
1/4 x 3 1/2	THDB25312H	1/4	3/8	50	250
1/4 x 4	THDB25400H	1/4	3/8	50	250
3/8 x 1 3/4	THD37134H*	3/8	9/16	50	250
3/8 x 2 1/2	THD37212H*	3/8	9/16	50	200
3/8 x 3	THD37300H	3/8	9/16	50	200
3/8 x 4	THD37400H	3/8	9/16	50	200
3/8 x 5	THD37500H	3/8	9/16	50	100
3/8 x 6	THD37600H	3/8	9/16	50	100
1/2 x 3	THD50300H	1/2	3/4	25	100
1/2 x 4	THD50400H	1/2	3/4	20	80
1/2 x 5	THD50500H	1/2	3/4	20	80
1/2 x 6	THD50600H	1/2	3/4	20	80
1/2 x 6 1/2	THD50612H	1/2	3/4	20	40
1/2 x 8	THD50800H	1/2	3/4	5	25
1/2 x 12	THD501200H	1/2	3/4	5	25
1/2 x 13	THD501300H	1/2	3/4	5	25
1/2 x 14	THD501400H	1/2	3/4	5	25
1/2 x 15	THD501500H	1/2	3/4	5	25
5/8 x 4	THDB62400H	5/8	15/16	10	40
5/8 x 5	THDB62500H	5/8	15/16	10	40
5/8 x 6	THDB62600H	5/8	15/16	10	40
5/8 x 6 1/2	THDB62612H	5/8	15/16	10	40
5/8 x 8	THDB62800H	5/8	15/16	10	20
3/4 x 4	THD75400H	3/4	1 1/8	10	40
3/4 x 5	THD7500H	3/4	1 1/8	5	20
3/4 x 6	THDT75600H	3/4	1 1/8	5	20
3/4 x 7	THD75700H	3/4	1 1/8	5	10
3/4 x 8 1/2	THD75812H	3/4	1 1/8	5	10
3/4 x 10	THD75100H	3/4	1 1/8	5	10
* These models do not meet minimum embedment depth requirements for strength design and require maximum installation torque of 25 ft. – lb. using a torque wrench, driver drill or cordless 1/4" impact driver with a maximum permitted torque rating of 100 ft. – lb.

Titen HD® Anchor Product Data — Mechanically Galvanized
Size (in.)	Model No.	Drill Bit Dia. (in.)	Wrench Size (in.)	Quantity
Size (in.)	Model No.	Drill Bit Dia. (in.)	Wrench Size (in.)	Box	Carton
3/8 x 5	THD37500HMG	3/8	9/16	50	100
3/8 x 6	THD37600HMG	3/8	9/16	50	100
1/2 x 5	THD50500HMG	1/2	3/4	20	80
1/2 x 6	THD50600HMG			20	80
1/2 x 6 1/2	THD50612HMG			20	40
1/2 x 8	THD50800HMG			20	40
5/8 x 5	THDB62500HMG	5/8	15/16	10	40
5/8 x 6	THDB62600HMG			10	40
5/8 x 6 1/2	THDB62612HMG			10	40
5/8 x 8	THDB62800HMG			10	20
3/4 x 8 1/2	THD75812HMG	3/4	1 1/8	5	10
3/4 x 10	THD75100HMG	3/4	1 1/8	5	10
Mechanical galvanizing meets ASTM B695, Class 65, Type 1. Intended for some pressure-treated wood sill plate applications. Not for use in other corrosive or outdoor environments. See Supplemental Topics for Anchors or visit www.strongtie.com/info for more corrosion information.

Additional Installation Information
Titan HD® Diameter (in.)	Wrench Size (in.)	Recommended Fixture Hole Size (in.)	Min. Hole Depth Overdrill (in.)
1/4	3/8	3/8 to 7/16	1/8
3/8	9/16	1/2 to 9/16	1/4
1/2	3/4	5/8 to 11/16	1/2
5/8	15/16	3/4 to 13/16	1/2
3/4	1 1/8	7/8 to 15/16	1/2

Titen HD® Installation Information and Additional Data¹
Characteristic	Symbol	Units	Nominal Anchor Diameter, d_a (in.)
Characteristic	Symbol	Units	1/4⁴		3/8		1/2		5/8⁴		3/4
Installation Information
Drill Bit Diameter	d_bit	in.	1/4		3/8		1/2		5/8		3/4
Baseplate Clearance Hole Diameter	d_c	in.	3/8		1/2		5/8		3/4		7/8
Maximum Installation Torque	T_inst,max	ft.-lbf	24²		50²		65²		100²		150²
Maximum Impact Wrench Torque Rating	T_impact,max	ft.-lbf	125³		150³		340³		340³		385³
Minimum Hole Depth	h_hole	in.	1 3/4	2 5/8	2 3/4	3 1/2	3 3/4	4 1/2	4 1/2	6	6	6 3/4
Nominal Embedment Depth	h_nom	in.	1 5/8	2 1/2	2 1/2	3 1/4	3 1/4	4	4	5 1/2	5 1/2	6 1/4
Critical Edge Distance	c_ac	in.	3	6	2 11/16	3 5/8	3 9/16	4 1/2	4 1/2	6 3/8	6 3/8	7 5/16
Minimum Edge Distance	c_min	in.	1 1/2		1 3/4
Minimum Spacing	s_min	in.	3
Minimum Concrete Thickness	h_min	in.	3 1/4	3 1/2	4	5	5	6 1/4	6	8 1/2	8 3/4	10
Additional Data
Anchor Category	Category	—	1
Yield Strength	f_ya	psi	100,000		97,000
Tensile Strength	f_uta	psi	125,000		110,000
Minimum Tensile & Shear Stress Area	A_se	in²	0.042		0.099		0.183		0.276		0.414
Axial Stiffness in Service Load Range – Uncracked Concrete	β_uncr	lb./in.	202,000		715,000
Axial Stiffness in Service Load Range – Cracked Concrete	β_cr	lb./in.	173,000		345,000
The information presented in this table is to be used in conjunction with the design criteria of ACI 318 Appendix D. T_inst,max is the maximum permitted installation torque for the embedment depth range covered by this table using a torque wrench. T_impact,max is the maximum permitted torque rating for impact wrenches for the embedment depth range covered by this table. Data for 1/4" anchor is only valid for THDB25 series. Data for the 5/8" anchor is valid only for the THDB62 series.