Simpson Strong-Tie Strong-Bolt® 2 Wedge Anchor — Mechanically Galvanized

Simpson Strong-Tie Company

The Strong-Bolt 2 wedge-type expansion anchor in a mechanically galvanized finish can be used where a high-load-resisting anchor is needed for exterior applications. It has the same dual undercutting embossments on each clip segment as the zinc-electroplated version. Suitable for horizontal, vertical and overhead applications, the STB2-MG anchor is tested in uncracked concrete in accordance with AC193 and also in uncracked masonry in accordance with AC01.

Key Features

Chamfered top designed to prevent mushrooming during installation
Suitable for horizontal, vertical and overhead applications
Tested for minimum concrete thickness of 3 1/4"
Standard (ANSI) fractional sizes: fits standard fixtures and installs with common drill bit and tool sizes
Tested in uncracked concrete per ACI355.2 and AC193

Material

Carbon steel

Finish

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 minimum hole depth, 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.
Assemble the anchor with nut and washer so the top of the nut is flush with the top of the anchor. Place the anchor in the fixture, and drive it into the hole until the washer and nut are tight against the fixture.
Tighten to the required installation torque.

Strong-Bolt 2 Diameter (in.)	Drill Bit Size (in.)	Min. Fixture Hole (in.)	Wrench Size (in.)	Concrete Installation Torque (ft.-lbf.)
1/4	1/4	5/16	7/16	4
3/8	3/8	7/16	9/16	20
1/2	1/2	9/16	3/4	45
5/8	5/8	11/16	15/16	60
3/4	3/4	7/8	1 1/8	90

Caution

Do not use an impact wrench to set or tighten the Strong-Bolt 2 anchor
Oversized holes in the base material will make it difficult to set the anchor and will reduce the anchor's load capacity