The Original Boxbolt® #BQ3S12

Blind bolt fasteners for faster, easier, blind structural connections suited for every environment and application.

Measurements & Specifications

BoxBolt Tech Data Zinc
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Part Number & Description

Dimensional Information

Load Information

Finish

Product Code

Bolt Dia

Description

Setscrew Length

Clamping Range (Min)

Clamping Range (Max)

Across Flats of Shoulder

Shoulder
Thickness

Sleeve Dia

Hole Size
Dia

Available Strength (lbs.) (Tensile)

Available Strength (lbs.) (Shear)

Torque (ft lb)

Zinc

BQ1Z06*

1/4"

1/4" BoxBolt Size 1

1-3/4"

1/8"

7/8"

11/16"

3/16"

3/8"

7/16"

2,872

4,793

BQ1Z08

5/16"

5/16" BoxBolt Size 1

3/16"

7/8"

1/4"

1/2"

9/16"

5,071

5,917

BQ2Z08

5/16"

5/16" BoxBolt Size 2

2-3/4"

11/16"

1-13/16"

7/8"

1/4"

1/2"

9/16"

5,071

5,917

BQ3Z08

5/16"

5/16" BoxBolt Size 3

3-9/16"

1-3/16"

2-5/8"

7/8"

1/4"

1/2"

9/16"

5,071

5,917

BQ1Z10

3/8"

3/8" BoxBolt Size 1

3/16"

7/8"

15/16"

1/4"

11/16"

3/4"

9,718

10,985

BQ2Z10

3/8"

3/8" BoxBolt Size 2

2-3/4"

11/16"

1-11/16"

15/16"

1/4"

11/16"

3/4"

9,718

10,985

BQ3Z10

3/8"

3/8" BoxBolt Size 3

3-9/16"

1-3/8"

2-1/2"

15/16"

1/4"

11/16"

3/4"

9,718

10,985

BQ1Z12

1/2"

1/2" BoxBolt Size 1

2-3/16"

3/16"

5/16"

3/4"

13/16"

13,015

12,676

BQ2Z12

1/2"

1/2" BoxBolt Size 2

3-1/8"

3/4"

5/16"

3/4"

13/16"

13,015

12,676

BQ3Z12

1/2"

1/2" BoxBolt Size 3

1-9/16"

2-3/4"

5/16"

3/4"

13/16"

13,015

12,676

BQ1Z16

5/8"

5/8" BoxBolt Size 1

3/16"

1-3/8"

1-7/16”

3/8"

1-1/16"

26,199

29,578

140

BQ2Z16

5/8"

5/8" BoxBolt Size 2

1-3/16"

2-3/8"

1-7/16"

3/8"

1-1/16"

26,199

29,578

140

BQ3Z16

5/8"

5/8" BoxBolt Size 3

4-3/4"

2-3/16"

3-1/8"

1-7/16"

3/8"

1-1/16"

26,199

29,578

140

BQ1Z20

3/4"

3/4" BoxBolt Size 1

5/16"

1-5/8"

1-13/16"

7/16"

1-1/4"

1-5/16"

36,932

33,804

221

BQ2Z20

3/4"

3/4" BoxBolt Size 2

4-3/4"

1-3/8"

2-13/16"

1-13/16"

7/16"

1-1/4"

1-5/16"

36,932

33,804

221

BQ3Z20

3/4"

3/4" BoxBolt Size 3

2-9/16"

1-13/16"

7/16"

1-1/4"

1-5/16"

36,932

33,804

221

BoxBolt Tech Data HDG
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Part Number & Description

Dimensional Information

Load Information

Finish

Product Code

Bolt Dia

Description

Setscrew Length

Clamping Range (Min)

Clamping Range (Max)

Across Flats of Shoulder

Shoulder
Thickness

Sleeve Dia

Hole Size
Dia

Available Strength (lbs.) (Tensile)

Available Strength (lbs.) (Shear)

Torque (ft lb)

HDG

BQ1G08

5/16"

5/16" BoxBolt Size 1

3/16"

7/8"

1/4"

1/2"

9/16"

5,071

5,917

BQ2G08

5/16"

5/16" BoxBolt Size 2

2-3/4"

11/16"

1-13/16"

7/8"

1/4"

1/2"

9/16"

5,071

5,917

BQ3G08

5/16"

5/16" BoxBolt Size 3

3-9/16"

1-3/16"

2-5/8"

7/8"

1/4"

1/2"

9/16"

5,071

5,917

BQ1G10

3/8"

3/8" BoxBolt Size 1

3/16"

7/8"

15/16"

1/4"

11/16"

3/4"

9,718

10,985

BQ2G10

3/8"

3/8" BoxBolt Size 2

2-3/4"

11/16"

1-11/16"

15/16"

1/4"

11/16"

3/4"

9,718

10,985

BQ3G10

3/8"

3/8" BoxBolt Size 3

3-9/16"

1-3/8"

2-1/2"

15/16"

1/4"

11/16"

3/4"

9,718

10,985

BQ1G12

1/2"

1/2" BoxBolt Size 1

2-3/16"

3/16"

5/16"

3/4"

13/16"

13,015

12,676

BQ2G12

1/2"

1/2" BoxBolt Size 2

3-1/8"

3/4"

5/16"

3/4"

13/16"

13,015

12,676

BQ3G12

1/2"

1/2" BoxBolt Size 3

1-9/16"

2-3/4"

5/16"

3/4"

13/16"

13,015

12,676

BQ1G16

5/8"

5/8" BoxBolt Size 1

3/16"

1-3/8"

1-7/16”

3/8"

1-1/16"

26,199

29,578

140

BQ2G16

5/8"

5/8" BoxBolt Size 2

1-3/16"

2-3/8"

1-7/16"

3/8"

1-1/16"

26,199

29,578

140

BQ3G16

5/8"

5/8" BoxBolt Size 3

4-3/4"

2-3/16"

3-1/8"

1-7/16"

3/8"

1-1/16"

26,199

29,578

140

BQ1G20

3/4"

3/4" BoxBolt Size 1

5/16"

1-5/8"

1-13/16"

7/16"

1-1/4"

1-5/16"

36,932

33,804

221

BQ2G20

3/4"

3/4" BoxBolt Size 2

4-3/4"

1-3/8"

2-13/16"

1-13/16"

7/16"

1-1/4"

1-5/16"

36,932

33,804

221

BQ3G20

3/4"

3/4" BoxBolt Size 3

2-9/16"

1-13/16"

7/16"

1-1/4"

1-5/16"

36,932

33,804

221

BoxBolt Tech Data SS
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Part Number & Description

Dimensional Information

Load Information

Finish

Product Code

Bolt Dia

Description

Setscrew Length

Clamping Range (Min)

Clamping Range (Max)

Across Flats of Shoulder

Shoulder
Thickness

Sleeve Dia

Hole Size
Dia

Available Strength (lbs.) (Tensile)

Available Strength (lbs.) (Shear)

Torque (ft lb)

BQ1S06

1/4"

1/4" BoxBolt Size 1

1-3/4"

1/8"

7/8"

11/16"

3/16"

3/8"

7/16"

2,872

4,793

BQ1S08

5/16"

5/16" BoxBolt Size 1

3/16"

7/8"

1/4"

1/2"

9/16"

4,314

6,787

BQ2S08

5/16"

5/16" BoxBolt Size 2

2-3/4"

11/16"

1-13/16"

7/8"

1/4"

1/2"

9/16"

4,314

6,787

BQ3S08

5/16"

5/16" BoxBolt Size 3

3-9/16"

1-3/16"

2-5/8"

7/8"

1/4"

1/2"

9/16"

4,314

6,787

BQ1S10

3/8"

3/8" BoxBolt Size 1

3/16"

7/8"

15/16"

1/4"

11/16"

3/4"

6,839

12,222

BQ2S10

3/8"

3/8" BoxBolt Size 2

2-3/4"

11/16"

1-11/16"

15/16"

1/4"

11/16"

3/4"

6,839

12,222

BQ3S10

3/8"

3/8" BoxBolt Size 3

3-9/16"

1-3/8"

2-1/2"

15/16"

1/4"

11/16"

3/4"

6,839

12,222

BQ1S12

1/2"

1/2" BoxBolt Size 1

2-3/16"

3/16"

5/16"

3/4"

13/16"

9,945

15,543

BQ2S12

1/2"

1/2" BoxBolt Size 2

3-1/8"

3/4"

5/16"

3/4"

13/16"

9,945

15,543

BQ3S12

1/2"

1/2" BoxBolt Size 3

1-9/16"

2-3/4"

5/16"

3/4"

13/16"

9,945

15,543

BQ1S16

5/8"

5/8" BoxBolt Size 1

3/16"

1-3/8"

1-7/16”

3/8"

1-1/16"

18,523

28,191

140

BQ2S16

5/8"

5/8" BoxBolt Size 2

1-3/16"

2-3/8"

1-7/16"

3/8"

1-1/16"

18,523

28,191

140

BQ3S16

5/8"

5/8" BoxBolt Size 3

4-3/4"

2-3/16"

3-1/8"

1-7/16"

3/8"

1-1/16"

18,523

28,191

140

BQ1S20

3/4"

3/4" BoxBolt Size 1

5/16"

1-5/8"

1-13/16"

7/16"

1-1/4"

1-5/16"

28,909

47,203

221

BQ2S20

3/4"

3/4" BoxBolt Size 2

4-3/4"

1-3/8"

2-13/16"

1-13/16"

7/16"

1-1/4"

1-5/16"

28,909

47,203

221

BQ3S20

3/4"

3/4" BoxBolt Size 3

2-9/16"

1-13/16"

7/16"

1-1/4"

1-5/16"

28,909

47,203

221

BoxBolt Hole Dimensions and Positioning
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Box Bolt Size	Dim A	Dim B	Dim C
1/4	1-3/16	7/16	7/16
5/16	1-3/8	1/2	9/16
3/8	1-9/16	9/16	3/4
1/2	2	13/16	13/16
5/8	2-3/16	13/16	1-1/16
3/4	2-3/4	1	1-5/16

How It Works

How It Works

The Original BoxBolt is a fully tested and approved blind structural bolt solution for connecting to hollow section steel, or structural connections which access is restricted to only one side. The BoxBolt is suitable for rectangular, square, and circular hollow sections. The structural steel anchor bolt features a hexagon head designed to be installed with a standard wrench. Our unique BoxSok installation tool is also available for faster installation.

The BoxBolt is often used on high profile projects where building aesthetics are essential, and can be adapted to suit the requirements of our client and the architect to make the connection pleasing to the eye.

Features & Benefits

The BoxBolt is available in three finishes:

Zinc plated for the less aggressive environments
Hot Dip Galvanized for the more aggressive environments
Stainless Steel for the most demanding of applications

These finishes combined with three lengths of BoxBolt make it extremely flexible to suit every environment and application.

Materials:

Mild steel to BS EN 10083 Grade 1.1151
Stainless steel to BS EN 10088 Grade 1.4401

View BoxBolt Structural Anchors Applications

The Original Boxbolt® #BQ3S12

Measurements & Specifications

How It Works

How It Works

Features & Benefits

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