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Strong-Bolt® 2 Wedge Anchor

Strong-Bolt® 2

The Simpson Strong-Tie Strong-Bolt 2 wedge anchor is now available in Type 304 stainless steel in standard sizes. Previously available only in Type 316 and carbon steel, the additional product offering allows you to choose the best material solution for your job. The Strong-Bolt 2 wedge anchor is an optimal choice for cracked and uncracked concrete. Following rigorous testing according to ICC-ES acceptance criteria, the Strong-Bolt 2 wedge anchor received classification as a Category 1 anchor, which is the highest attainable category for performance in cracked concrete under static and seismic loading. It is code listed by ICC-ES under the 2015 IBC and ACI 318 strength design requirements for post-installed anchors in cracked and uncracked concrete.

Key Features

  • Tri-segmented clip: Each segment adjusts independently, increasing follow-up expansion, should the hole increase in size as a result of a crack
  • Dual embossments on each clip segment: These enable the clip to undercut into the concrete, thereby increasing follow-up expansion should a crack occur
  • Standard (ANSI) fractional anchor: The Strong-Bolt 2 is sized to fit most fixtures, and it installs with common drill bit sizes and tools

Material

  • Refer to Material Specifications data table

Finish

  • Zinc-plated (carbon portion only)

Installation

  1. 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.
  2. 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.
  3. Tighten to the required installation torque.

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

Technical Information

Codes

Related Links

Related Literature

Product Information Tables

Strong-Bolt® 2 Anchor Product Data
Size (in.) Carbon Steel Model No. Type 304 Stainless Steel Model No. Type 316 Stainless Steel Model No. Drill Bit Dia. (in.) Thread Length (in.) Quantity
Box Carton
1/4 x 1 3/4 STB2-25134 STB2-251344SS STB2-251346SS 1/4 15/16 100 500
1/4 x 2 1/4 STB2-25214 STB2-252144SS STB2-252146SS 1/4 1 7/16 100 500
1/4 x 3 1/4 STB2-25314 STB2-253144SS STB2-253146SS 1/4 2 7/16 100 500
3/8 x 2 3/4 STB2-37234 STB2-372344SS STB2-372346SS 3/8 1 5/16 50 250
3/8 x 3 STB2-37300 STB2-373004SS STB2-373006SS 3/8 1 9/16 50 250
3/8 x 3 1/2 STB2-37312 STB2-373124SS STB2-373126SS 3/8 2 1/16 50 250
3/8 x 3 3/4 STB2-37334 STB2-373344SS STB2-373346SS 3/8 2 5/16 50 250
3/8 x 5 STB2-37500 STB2-375004SS STB2-375006SS 3/8 3 9/16 50 200
3/8 x 7 STB2-37700 STB2-377004SS STB2-377006SS 3/8 5 9/16 50 200
1/2 x 3 3/4 STB2-50334 STB2-503344SS STB2-503346SS 1/2 2 1/16 25 125
1/2 x 4 1/4 STB2-50414 STB2-504144SS STB2-504146SS 1/2 2 9/16 25 100
1/2 x 4 3/4 STB2-50434 STB2-504344SS STB2-504346SS 1/2 3 1/16 25 100
1/2 x 5 1/2 STB2-50512 STB2-505124SS STB2-505126SS 1/2 3 13/16 25 100
1/2 x 7 STB2-50700 STB2-507004SS STB2-507006SS 1/2 5 5/16 25 100
1/2 x 8 1/2 STB2-50812 STB2-508124SS STB2-508126SS 1/2 6 25 50
1/2 x 10 STB2-50100 STB2-501004SS STB2-501006SS 1/2 6 25 50
5/8 x 4 1/2 STB2-62412 STB2-624124SS STB2-624126SS 5/8 2 7/16 20 80
5/8 x 5 STB2-62500 STB2-625004SS STB2-625006SS 5/8 2 15/16 20 80
5/8 x 6 STB2-62600 STB2-626004SS STB2-626006SS 5/8 3 15/16 20 80
5/8 x 7 STB2-62700 STB2-627004SS STB2-627006SS 5/8 4 15/16 20 80
5/8 x 8 1/2 STB2-62812 STB2-628124SS STB2-628126SS 5/8 6 20 40
5/8 x 10 STB2-62100 STB2-621004SS STB2-621006SS 5/8 6 10 20
3/4 x 5 1/2 STB2-75512 STB2-755124SS STB2-755126SS 3/4 3 3/16 10 40
3/4 x 6 1/4 STB2-75614 STB2-756144SS STB2-756146SS 3/4 3 15/16 10 40
3/4 x 7 STB2-75700 STB2-757004SS STB2-757006SS 3/4 4 11/16 10 40
3/4 x 8 1/2 STB2-75812 STB2-758124SS STB2-758126SS 3/4 6 10 20
3/4 x 10 STB2-75100 3/4 6 10 20
1 x 7 STB2-100700 1 3 1/2 5 20
1 x 10 STB2-1001000 1 3 1/2 5 10
1 x 13 STB2-1001300 1 3 1/2 5 10
Design requirements, dimensional data and installation information published in the C-A-2016 Simpson Strong-Tie Anchoring and Fastening Systems catalog for the Type 316 stainless-steel Strong-Bolt 2 wedge anchor applies to the Type 304 stainless-steel Strong-Bolt 2 wedge anchor for all diameters with the exception that the installation torque for the 1/2" stainless-steel Strong-Bolt 2 wedge anchor is 65 ft.-lb.
Material Specifications
Anchor Body Nut Washer Clip
Carbon Steel1 Carbon Steel, ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568
Type 304 Stainless Steel Type 304 Stainless Steel Type 304 Stainless Steel Type 304 Stainless Steel or Type 316 Stainless Steel
Type 316 Stainless Steel Type 316 Stainless Steel Type 316 Stainless Steel Type 316 Stainless Steel
1. Zinc meets ASTM B 633, Class SC 1 (Fe / Zn 5), Type III.
Strong-Bolt® 2 Anchor Installation Data
Strong-Bolt 2 Dia. (in.) 1/4 3/8 1/2 5/8 3/4 1
Drill Bit Size (in.) 1/4 3/8 1/2 5/8 3/4 1
Min. Fixture Hole (in.) 5/16 7/16 9/16 11/16 7/8 1 1/8
Wrench Size (in.) 7/16 9/16 3/4 15/16 1 1/8 1 1/2
Length Identification Head Marks on Strong-Bolt® 2 Wedge Anchors (corresponds to length of anchor – inches)
Mark Units A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
From in. 1 1/2 2 2 1/2 3 3 1/2 4 4 1/2 5 5 1/2 6 6 1/2 7 7 1/2 8 8 1/2 9 9 1/2 10 11 12 13 14 15 16 17 18
Up To But Not Including in. 2 2 1/2 3 3 1/2 4 4 1/2 5 5 1/2 6 6 1/2 7 7 1/2 8 8 1/2 9 9 1/2 10 11 12 13 14 15 16 17 18 19