BoxBolt®

BoxBolt® is a blind bolt for connecting structural steel to hollow structural section (HSS) members when you only have access from one side. Instead of welding or through-bolting, the sleeve expands inside the HSS wall as you tighten the core bolt with a standard wrench, forming a bearing-type or slip-critical connection under Section J3 of AISC 360. BoxBolt® Type C fasteners are ICC-ES approved under ESR-3217 for the 2015, 2012, and 2009 IBC, and the BoxSok™ tool speeds up installation on multi-bolt jobs.icc-es

BoxBolt^® Blind Fastening for Fast, Simple Connection to Hollow Steel

Advantages BoxBolt^® Expansion Anchors

Simple connections to round, rectangular and square sections
Guaranteed Safe Working Load
5:1 Factor of Safety
No close tolerance holes required
Only standard hand tools required
Available in mild steel, zinc plated, or hot dip galvanized, and stainless steel
Large, combined material clamping range
Custom Tamper-Resistant BoxBolt^® and special lengths available

BoxBolt^®Blind Expansion Bolts Use & Applications
See BoxBolt® Commonly Asked Questions

Learn More About BoxBolt^® Technical Specifications.

<div class="schemaQA"> <div itemscope itemtype="https://schema.org/FAQPage"> <div itemscope itemprop="mainEntity" itemtype="https://schema.org/Question"> <p itemprop="name" style="font-size:14px; font-weight:700">How to Install BoxBolt<sup>®</sup> Expansion Anchors</p> <div itemscope itemprop="acceptedAnswer" itemtype="https://schema.org/Answer"> <div itemprop="text" style="font-size:13px;"> <ul> <li>Align the hole in the bracket to be secured with the pre-drilled hole in the structural tube. Insert the BoxBolt through both pieces of steel until the underside of the shoulder is flush with the outside of the steel.</li> <li>Hold the hexagon shoulder of the BoxBolt<sup>®</sup> with an open ended wrench. Use a torque wrench to tighten the core bolt.</li> <li>Remove the open ended wrench and check to ensure that the core bolt is tightened to the recommended torque.</li> </ul><br><br> <br><br> </div> </div> </div> </div></div>

BoxBolt®, The Original

BoxBolt® ICC Approved (Type C)

BoxBolt® Socket Installation Tools

SKU	Product Type	Diameter	Length	Clamping Range Min	Clamping Range Max	Material	Finish	Pieces Per Unit	Price
BQ2G08	Blind Bolt	5/16"	2-3/4"	11/16"	1-13/16"	Carbon Steel	Hot Dip Galvanized	50/Box	$1795.00
BQ3Z20	Blind Bolt	3/4"	6"	2-9/16"	4"	Carbon Steel	Zinc	5/Box	$656.00
BQ1S06	Blind Bolt	1/4"	1-3/4"	1/8"	7/8"	Stainless Steel	Plain	100/Box	Contact for Pricing
BQ2G10	Blind Bolt	3/8"	2-3/4"	11/16"	1-11/16"	Carbon Steel	Hot Dip Galvanized	25/Box	$1096.25
BQ2G12	Blind Bolt	1/2"	3-1/8"	3/4"	2"	Carbon Steel	Hot Dip Galvanized	20/Box	$1092.00
BQ2G16	Blind Bolt	5/8"	4"	1-3/16"	2-3/8"	Carbon Steel	Hot Dip Galvanized	10/Box	$751.00
BQ2G20	Blind Bolt	3/4"	4-3/4"	1-3/8"	2-13/16"	Carbon Steel	Hot Dip Galvanized	5/Box	$646.25
BQ2S12	Blind Bolt	1/2"	3-1/8"	3/4"	2"	Stainless Steel	Plain	20/Box	$2916.00
BQ2S16	Blind Bolt	5/8"	4"	1-3/16"	2-3/8"	Stainless Steel	Plain	10/Box	$2280.50
BQ2S20	Blind Bolt	3/4"	4-3/4"	1-3/8"	2-13/16"	Stainless Steel	Plain	8/Box	$3314.00
BQ3G08	Blind Bolt	5/16"	3-9/16"	1-3/16"	2-5/8"	Carbon Steel	Hot Dip Galvanized	40/Box	$1524.00
BQ3G10	Blind Bolt	3/8"	3-9/16"	1-3/8"	2-1/2"	Carbon Steel	Hot Dip Galvanized	25/Box	$1148.75
BQ3G12	Blind Bolt	1/2"	4"	1-9/16"	2-3/4"	Carbon Steel	Hot Dip Galvanized	20/Box	$1088.00
BQ3G16	Blind Bolt	5/8"	4-3/4"	2-3/16"	3-1/8"	Carbon Steel	Hot Dip Galvanized	10/Box	$777.50
BQ3G20	Blind Bolt	3/4"	6"	2-9/16"	4"	Carbon Steel	Hot Dip Galvanized	5/Box	$679.50

Displaying 15 of 40 Products

SKU	Product Type	Diameter	Length	Clamping Range Min	Clamping Range Max	Material	Finish	Pieces Per Unit	Price
BQ2GAL20C	Blind Bolt	3/4"	5-1/8"	1-5/16"	3"	Carbon Steel	Hot Dip Galvanized	1/EA	$189.30
BQ3GAL20C	Blind Bolt	3/4"	6"	2-9/16"	4"	Carbon Steel	Hot Dip Galvanized	1/EA	$199.50
BQ3GAL16C	Blind Bolt	5/8"	4-3/4"	2"	3-1/16"	Carbon Steel	Hot Dip Galvanized	1/EA	$106.55
BQ3GAL12C	Blind Bolt	1/2"	4"	1-1/2"	2-11/18"	Carbon Steel	Hot Dip Galvanized	1/EA	$74.80
BQ2GAL12C	Blind Bolt	1/2"	3-1/8"	3/4"	1-7/8"	Carbon Steel	Hot Dip Galvanized	1/EA	$75.15
BQ1GAL20C	Blind Bolt							1/EA	$115.85
BQ1GAL16C	Blind Bolt							10/Box	$682.50
BQ1GAL12C	Blind Bolt							1/EA	$40.00

Displaying 8 of 8 Products

SKU	Product Type	Diameter	Length	Pieces Per Unit	Price
M06BOXSOK	Installation Tool	1-3/16"	4-5/16"	1/EA	$623.50
M08BOXSOK	Installation Tool	1-5/16"	4-7/16"	1/Box	$652.00
M10BOXSOK	Installation Tool	1-1/2"	4-7/16"	1/EA	$717.90
M12BOXSOK	Installation Tool	1-5/8"	4-1/2"	1/EA	$723.25
M16BOXSOK	Installation Tool	1-15/16"	3-7/16"	1/EA	$735.90
M20BOXSOK	Installation Tool	2-5/16"	3-1/2"	1/EA	$747.90

Displaying 6 of 6 Products

Case Studies

CURTAIN WALL GLAZING
LNA partnered with Thornton Tomasetti on Reston metro station, an eye-catching Transit-Oriented, Mixed-Use development outside Washington D.C.

<a href="https://resources.tannerbolt.com/boxbolt-case-study-reston-station" style="text-decoration:none;"><div style="padding:10px;width:90%;border:1px solid #1A3865;text-decoration:none;color:#1A3865;text-align:center;margin:10px auto">VIEW PROJECT</div></a>

LNA supplied ICC Approved Type C BoxBolts to connect the steel tube framing for the roof joists and walls.

<a href="https://resources.tannerbolt.com/boxbolt-case-study-reston-station-0-0" style="text-decoration:none;"><div style="padding:10px;width:90%;border:1px solid #1A3865;text-decoration:none;color:#1A3865;text-align:center;margin:10px auto">VIEW PROJECT</div></a>

Frequent Questions

<table itemscope itemtype="https://schema.org/FAQPage" style="width:100%; border-collapse:collapse;"> <tr itemprop="mainEntity" itemscope itemtype="https://schema.org/Question" style="border-bottom:1px solid #ddd;"> <td> <strong itemprop="name">What is a BoxBolt®?</strong> <div itemscope itemtype="https://schema.org/Answer" itemprop="acceptedAnswer"> <p itemprop="text">A BoxBolt® is a blind expansion bolt used for structural connections to hollow structural section (HSS) steel where access is available from one side only. It's often used to connect structural tube steel components without welding or through-bolting.</p> </div> </td> </tr> <tr itemprop="mainEntity" itemscope itemtype="https://schema.org/Question" style="border-bottom:1px solid #ddd;"> <td> <strong itemprop="name">What hole size do I need for the BoxBolt®?</strong> <div itemscope itemtype="https://schema.org/Answer" itemprop="acceptedAnswer"> <p itemprop="text">You need a clearance hole sized for the outside sleeve of the BoxBolt®, not just the core bolt. A common installation mistake is drilling for the core bolt diameter only, which leaves the hole too small for the sleeve.</p> </div> </td> </tr> <tr itemprop="mainEntity" itemscope itemtype="https://schema.org/Question" style="border-bottom:1px solid #ddd;"> <td> <strong itemprop="name">Can the BoxBolt® be used in concrete?</strong> <div itemscope itemtype="https://schema.org/Answer" itemprop="acceptedAnswer"> <p itemprop="text">BoxBolt® is designed and ICC-ES evaluated for structural steel-to-steel HSS connections, not concrete anchoring. For concrete applications, use a mechanical or adhesive concrete anchor rated for the substrate and load.</p> </div> </td> </tr> </table>