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Strong-Bolt® 2 Wedge Anchor — Mechanically Galvanized

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

  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.
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

Related Literature

Anchoring, Fastening, Restoration and Strengthening Systems for Concrete and Masonry
C-A-2023
A catalog of products belonging to our anchoring, fastening, restoration and strengthening systems for concrete and masonry.
Catalog
Sistemas de anclaje, sujeción, restauración y fortalecimiento para concreto y mampostería
C-A-2023SP
Un catálogo completo de productos e información para los sistemas de anclaje, sujeción, restauración y fortalecimiento para concreto y mampostería.
Catalog
Wedge-All® Mechanically Galvanized to Strong-Bolt® 2 Mechanically Galvanized Wedge Anchor Conversion Reference Table
S-A-WGSTBMGXRF23
A cross-reference tool for STB2 mechanically galvanized as a replacement for Wedge-All® anchors.
Flier
Strong-Bolt® 2 Design Information — Concrete
TEB-A-STB2-24
This technical engineering bulletin provides a supplement to the Anchoring, Fastening and Restoration Systems for Concrete and Masonry catalog.
Technical Bulletin
Canadian Addendum for 2023 Anchor Catalogue
TEBC-A-2023
This technical engineering bulletin for Canada, TEBC-A-2023, provides a supplement to the Anchoring, Fastening and Restoration Systems for Concrete and Masonry catalog, C-A-2023.
Technical Bulletin
Simpson Strong-Tie® Mechanically Galvanized Carbon-Steel Strong-Bolt® 2 Allowable Loads for Anchoring into the Face of Fully Grouted CMU Construction
L-A-STB2MGCMU23
Simpson tested mechanically galvanized carbon-steel Strong-Bolt 2 installed into the face of fully grouted concrete masonry units (CMU) in accordance with ICC-ES AC01, revised December 2020.
Engineering Letter
Safety Data Sheet for Mechanical Anchors
SDS-MechAnchors-NA-ENG-0520
Intended to provide information for use in workplace chemical management; information such as physical properties; hazards; protective measures; precautions for handling, storing, and transportation.
SDS
Ficha de Datos de Seguridad para Anclas Mecánicas
SDS-MechAnchors-NA-ES
Diseñado para dar información útil en la gestión de químicos en el lugar de trabajo; p.ej. propiedades físicas; riesgos; medidas de protección; precauciones para manejo, almacenamiento y transporte.
SDS
Fiche de Données de Sécurité pour Ancrages Mécaniques
SDS-MechAnchors-NA-FRCA
Prévu pour fournir de l’information sur la gestion des produits chimiques au travail comme propriétés physiques, dangers, mesures de protection et précautions de manipulation, stockage et transport.
SDS
Simpson Strong-Tie® Suggested General Notes for Anchor Products (.docx)
MF-A-GENNOTES24
Simpson Strong-Tie® Suggested General Notes for Anchor Products
MasterFormat® Specification
Simpson Strong-Tie® Suggested General Notes for Anchor Products (PDF)
MF-A-GENNOTES24
Simpson Strong-Tie® Suggested General Notes for Anchor Products
MasterFormat® Specification

Product Information Table

Fastener Production Information and Stuff & Things
New products
Model No. Coating/Material Size (in.) Drill Bit Dia. (in.) Thread Length (in.) Component Material, Anchor Body Component Material, Nut Component Material, Washer Component Material, Clip Packaging Qty.
Footnotes
  1. Models STB2-50234MG, STB2-62312MG and STB2-75434MG do not meet minimum embedment listed in TEB-A-STB2.
STB2-25314MGR100 Mechanically Galvanized / Carbon Steel 1/4 x 3 1/4 1/4 2 7/16 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 100
STB2-37300MGR50 Mechanically Galvanized / Carbon Steel 3/8 x 3 3/8 1 9/16 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 50
STB2-37334MGR50 Mechanically Galvanized / Carbon Steel 3/8 x 3 3/4 3/8 2 5/16 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 50
STB2-37500MGR50 Mechanically Galvanized / Carbon Steel 3/8 x 5 3/8 3 9/16 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 50
STB2-37700MGR50 Mechanically Galvanized / Carbon Steel 3/8 x 7 3/8 5 9/16 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 50
STB2-50100MGR25 Mechanically Galvanized / Carbon Steel 1/2 x 10 1/2 6 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 25
STB2-50234MGR25 Mechanically Galvanized / Carbon Steel 1/2 x 2 3/4 1/2 1 1/4 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 25
STB2-50334MGR25 Mechanically Galvanized / Carbon Steel 1/2 x 3 3/4 1/2 2 1/16 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 25
STB2-50414MGR25 Mechanically Galvanized / Carbon Steel 1/2 x 4 1/4 1/2 2 9/16 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 25
STB2-50512MGR25 Mechanically Galvanized / Carbon Steel 1/2 x 5 1/2 1/2 3 13/16 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 25
STB2-50700MGR25 Mechanically Galvanized / Carbon Steel 1/2 x 7 1/2 5 5/16 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 25
STB2-50812MGR25 Mechanically Galvanized / Carbon Steel 1/2 x 8 1/2 1/2 6 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 25
STB2-62100MGR10 Mechanically Galvanized / Carbon Steel 5/8 x 10 5/8 6 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 10
STB2-62120MGR10 Mechanically Galvanized / Carbon Steel 5/8 x 12 5/8 6 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 10
STB2-62312MGR20 Mechanically Galvanized / Carbon Steel 5/8 x 3 1/2 5/8 1 5/8 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 20
STB2-62412MGR20 Mechanically Galvanized / Carbon Steel 5/8 x 4 1/2 5/8 2 7/16 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 20
STB2-62500MGR20 Mechanically Galvanized / Carbon Steel 5/8 x 5 5/8 2 15/16 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 20
STB2-62600MGR20 Mechanically Galvanized / Carbon Steel 5/8 x 6 5/8 3 15/16 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 20
STB2-62700MGR20 Mechanically Galvanized / Carbon Steel 5/8 x 7 5/8 4 15/16 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 20
STB2-62812MGR20 Mechanically Galvanized / Carbon Steel 5/8 x 8 1/2 5/8 6 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 20
STB2-75100MGR10 Mechanically Galvanized / Carbon Steel 3/4 x 10 3/4 6 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 10
STB2-751200MGR5 Mechanically Galvanized / Carbon Steel 3/4 x 12 3/4 6 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 5
STB2-75434MGR10 Mechanically Galvanized / Carbon Steel 3/4 x 4 3/4 3/4 2 5/8 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 10
STB2-75512MGR10 Mechanically Galvanized / Carbon Steel 3/4 x 5 1/2 3/4 3 3/16 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 10
STB2-75614MGR10 Mechanically Galvanized / Carbon Steel 3/4 x 6 1/4 3/4 3 15/16 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 10
STB2-75700MGR10 Mechanically Galvanized / Carbon Steel 3/4 x 7 3/4 4 11/16 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 10
STB2-75812MGR10 Mechanically Galvanized / Carbon Steel 3/4 x 8 1/2 3/4 6 Mechanically Galvanized Carbon Steel ASTM A 563, Grade A Carbon Steel ASTM F844 Carbon Steel ASTM A 568 10

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

Code Reports & Compliance

Drawings

PDF DWG DXF RFA IFC SAT

Related Products

Strong-Bolt® 2
Strong-Bolt® 2
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Strong-Bolt® 2
Strong-Bolt® 2
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ADC