Type C BoxBolt® - Quick and Easy Blind Structural Steel Connections Backed by ICC Approval
Overview
BoxBolt is a fully tested blind fastener for connecting to tube steel or where access is restricted to one side only. BoxBolt is suitable for use with rectangular, square or even round tube sections. It eliminates the need for access to both sides of the connection and only requires a clearance hole to be drilled to suit its outside diameter. The holes can be drilled off-site for new projects where the position of the holes can be detailed or the holes can be drilled on site for retrofit applications.
There is no need for any skilled labor to install a BoxBolt as it can be done by using simple hand tools such as a wrench and torque wrench.
The BoxBolt offers a guaranteed load value provided the correct torque has been applied; this is stated in our technical tables and installation guidelines. The loads stated are based on physical testing of all conditions performed by a test facility with International Accreditation Service (IAS) certification.
Our unique BoxSok installation tool can be used to speed up installation when large numbers of BoxBolt are required.
Materials
- Mild steel to BS EN 10083 Grade 1.1151
Finish
- Hot Dip Galvanized to BS EN ISO 1461
Testing and Approvals
The BoxBolt is the first blind bolt to receive an Evaluation Service Report from the ICC Evaluation Service. Our report can be viewed on the ICC website by searching for our unique ESR number, ESR-3217 or by clicking here.
The testing and analysis have been performed in accordance to AC437 Acceptance Criteria. This ensures all aspects of blind bolting are covered and that our product is safe to use for all blind connections. The data in our technical tables were all developed from physical testing. Please click here to see a full copy of acceptance criteria AC437.
Product Testing
The testing we instigated was performed at an IAS certified test facility and the report is available for review.
Technical Specifications
TABLE 1-BoxBolt® TYPE C BLIND FASTENER DIMENSIONAL AND INSTALLATION INFORMATION¹
|
| Part Number & Description |
Dimensional Information³ |
| BoxBolt® (Part Code) |
BoxBolt®
Nominal Core Bolt Dia. (actual) |
Description² |
Nominal Core Bolt
Length (actual) |
Clamping range
(Dim X) |
Nominal Across Flats
of Shoulder Length (actual) |
Nominal Collar
Thickness (actual) |
Nominal Dim A (actual) |
Dim B |
Dim C
Drill Dia.
|
Torque (ft-lb) |
| Min |
Max |
| BQ1GAL12C |
1/2" (12mm) |
1/2" BoxBolt Size 1 |
2-3/16" (55mm) |
1/2" |
15/16" |
1" (26mm) |
5/16" (8.4mm) |
2-1/16" (52mm) |
1-1/8" |
13/16" |
60 |
| BQ2GAL12C |
1/2" (12mm) |
1/2" BoxBolt Size 2 |
3-1/8" (80mm) |
3/4" |
1-7/8" |
1" (26mm) |
5/16" (8.4mm) |
2-1/16" (52mm) |
1-1/8" |
13/16" |
60 |
| BQ3GAL12C |
1/2" (12mm) |
1/2" BoxBolt Size 3 |
4" (100mm) |
1-1/2" |
2-11/16" |
1" (26mm) |
5/16" (8.4mm) |
2-1/16" (52mm) |
1-1/8" |
13/16" |
60 |
| BQ1GAL16C |
5/8" (16mm) |
5/8" BoxBolt Size 1 |
3" (75mm) |
5/8" |
1-3/8" |
1-7/16" (36mm) |
3/8" (9.4mm) |
2-11/16" (68mm) |
1-3/8" |
1-1/16" |
140 |
| BQ2GAL16C |
5/8" (16mm) |
5/8" BoxBolt Size 2 |
4" (100mm) |
1" |
2-5/16" |
1-7/16" (36mm)
|
3/8" (9.4mm) |
2-11/16" (68mm) |
1-3/8" |
1-1/16" |
140 |
| BQ3GAL16C |
5/8" (16mm) |
5/8" BoxBolt Size 3 |
4-3/4" (120mm) |
2" |
3-1/16" |
1-7/16"(36mm)
|
3/8" (9.4mm) |
2-11/16" (68mm) |
1-3/8" |
1-1/16" |
140 |
| BQ1GAL20C |
3/4" (20mm) |
3/4" BoxBolt Size 1 |
4" (100mm) |
3/4" |
1-13/16" |
1-13/16" (46mm)
|
7/16" (11.4mm) |
3-1/16" (87mm) |
1-3/4" |
1-3/8" |
220 |
| BQ2GAL20C |
3/4" (20mm) |
3/4" BoxBolt Size 2 |
5-1/8" (130mm) |
1-5/16" |
3" |
1-13/16" (46mm) |
7/16" (11.4mm) |
3-1/16" (87mm) |
1-3/4" |
1-3/8" |
220 |
| BQ3GAL20C |
3/4" (20mm) |
3/4" BoxBolt Size 3 |
6" (150mm) |
2-9/16" |
4" |
1-13/16" (46mm) |
7/16" (11.4mm) |
3-1/16" (87mm) |
1-3/4" |
1-3/8" |
220
|
For SI: 1 inch = 25.4mm; l lbf = 4.448N; 1 ft-lb = 1.356 N-m.
¹When dimensions are expressed in both US customary and SI units; BoxBolt® dimensions in US customary units are converted from corresponding SI units.
²BoxBolt® size is determined by core bolt length.
³Dimension "X" is the total thickness of the connected steel elements (or the grip); "A" is the minimum spacing between fasteners; "B" is the minimum edge distance for the fasteners; "C" is the standard hole diameters for the fasteners.
| TABLE 2 - BoxBolt® TYPE C BLIND FASTENER STRENGTH INFORMATION |
| BoxBolt® (Part Code) |
LRFD STRENGTHS¹ (lbf) |
ASD STRENGTHS² (lbf) |
| Static Dominant Loads³ |
Seismic SDC D, E, or F⁴ |
Static Dominant Loads³ |
Seismic SDC D, E, or F⁴ |
| Shear-Bearing |
Shear-Slip Resistance |
Tension |
Shear-Bearing |
Shear-Slip Resistance |
Tension |
Shear-Bearing |
Shear-Slip Resistance |
Tension |
Shear-Bearing |
Shear-Slip Resistance |
Tension |
| BQ1GAL12C |
7680 |
150 |
5250 |
6900 |
150 |
4730 |
4800 |
90 |
3280 |
4320 |
100 |
2960 |
| BQ2GAL12C |
7680
|
150 |
5250 |
6900 |
150 |
4730 |
4800 |
90 |
3280 |
4320 |
100 |
2960 |
| BQ3GAL12C |
7680 |
150 |
5250 |
6900 |
150 |
4730 |
4800 |
90 |
3280 |
4320 |
100 |
2960
|
| BQ1GAL16C |
12200 |
170 |
13100 |
11000 |
170 |
11400 |
7650 |
110 |
8230 |
6870 |
110 |
7120 |
| BQ2GAL16C |
12200 |
170 |
13100 |
11000 |
170 |
11400 |
7650 |
110 |
8230 |
6870 |
110 |
7120 |
| BQ3GAL16C |
12200 |
170 |
13100 |
11000 |
170 |
11400 |
7650 |
110 |
8230 |
6870 |
110 |
7120 |
| BQ1GAL20C |
17600 |
790 |
15000 |
11800 |
790 |
13500 |
11000 |
490 |
9400 |
7380 |
500 |
8470 |
| BQ2GAL20C |
17600 |
790 |
15000 |
11800 |
790 |
13500 |
11000 |
490 |
9400 |
7380 |
500 |
8470 |
| BQ3GAL20C |
17600 |
790 |
15000 |
11800 |
790 |
13500 |
11000 |
490 |
9400 |
7380 |
500 |
8470 |
For SI: l lbf = 4.448N.
¹Load and Resistance Factor Design (LRFD) strengths are derived in accordance AC437, Sections 3.4, 3.5, 3.7, and 3.8, based on test data per AC437 Section 4.0.
²Allowable Strength Design (ASD) strengths are derived in accordance AC437, Sections 3.4, 3.5, 3.9, and 3.10, based on test data per AC437 Section 4.0.
³Static dominant loads include load combinations with gravity and wind loads for structures assigned to all Seismic Design Categories and load combinations with seismic loads for structures assigned to Seismic Design Category (SDC) A, B or C.
⁴Seismic SDC D, E or F refer to load combinations with seismic loads for structures assigned to Seismic Design Category (SDC) D, E or F.
Hole Dimensions and Positioning
| BoxBolt® Size |
Dim
A |
Dim
B
|
Dim
C |
| 1/2" (12mm) |
2-1/16" (52mm) |
1-1/8" |
13/16" |
| 5/8" (16mm) |
2-11/16" (68mm) |
1-3/8" |
1-1/16" |
| 3/4" (20mm) |
3-1/6" (87mm) |
1-3/4" |
1-3/8" |
Minimum edge distance = Dim B + the thickness of hollow section
ICC ESR-3217
