hollo bolt technical information file029418

40

Cavity FixingsThe Hollo-Bolt® and Lindibolt® eliminate the needfor conventional through-bolting or welding ofstructural hollow section (SHS) or any steelstructure where access is only available fromone side.

In the late 1940s, Lindapter revolutionised ‘blindconnections’ with the development of the originalLindibolt, for situations where access to both sidesof the steel was restricted. Following theintroduction and wide acceptance of SHS, theHollo-Bolt was invented to suit virtually any typeof hollow section, including square, rectangular,circular and oval profiles. As with all Lindapterproducts, the R&D department has continued todevelop the range with the rapid expansion indiameters, lengths, finishes, and head types.

Following comprehensive testing, The SteelConstruction Institute (SCI) and BritishConstructional Steelwork Association (BCSA)recognise the Hollo-Bolt as a primary structuralconnection, in the design guide ‘Joints in SteelConstruction – Simple Connections’.The Hollo-Bolt has CE Mark Certification, and isalso approved by the Deutsches Institut fürBautechnik and TÜV NORD.

Both the Lindibolt and Hollo-Bolt enable fast andsafe construction and can be swiftly installed bysimply inserting the product into pre-drilled holes,then tightening to the recommended torque usinghand tools.

Typical Hollo-Bolt applications include:• Primary Connections• Secondary Connections• Bridges• Cladding• Balconies• Towers and masts• Staircases and handrails• Glazing and roofs

Cavity Fixings 2

Lindapter Catalogue 11 UK:- 1/11/11 12:00 Page 40

41Tel: +44 (0) 1274 521444 © Lindapter International 2011 www.lindapter.com

Cavity Fixings 2

Type HB - Hollo-Bolt®

Steel, bright zinc plated plus JS 500Steel, hot dip galvanisedStainless Steel Grade 316

Suitable for hollow sections, tubes and where access is available fromone side only. For high corrosion protection the Hollo-Bolt® comes withadditional JS500 protection as standard or hot dip galvanised.Sizes M16 and M20 have a patented collapse mechanism foroptimised clamping force.

Awarded the Design Council’s Millennium Product status forinnovation in the year 2000.

W

Hollo-Bolt®: M8, M10, M12


Collar

H L

dD

W

Hollo-Bolt®: M16, M20H

Rubber Washer

L

dD

≥8

Rubber Washercompressed /increasedclamping force

Rubber Washer

Sleeve

Cone

Bolt

Across Flats A/F

Installation Hollo-Bolt®

1. Align pre-drilled fixtureand steelwork. InsertHollo-Bolt® throughfixture and steelwork.

2. Grip the Hollo-Bolt®

collar with an openended spanner.

3. Using a torquewrench, tighten thecentral bolt to therecommended torque.


42

Cavity FixingsType HB - Hollo-Bolt® 2

Joints in Steel Construction - Simple Connections


The tables above and on the opposite page state the safe working loads with a 5:1factor of safety and should be used for secondary applications. For primary design,please consult the guide Joints in Steel Construction - Simple Connections.

The guide provides design guidance for the use of Hollo-Bolt® and gives essential informationfor structural steelwork connections for use in buildings designed by the ‘Simple Method’ i.e.braced frames where connections carry mainly shear and axial loads only.

To obtain further details on the Simple Connections guide please contact:The Steel Construction InstituteTel: +44 (0) 1344 636 525Fax: +44 (0) 1344 636 570www.steel-sci.org

Published bySCI/BCSA Connections Group.Publication Number: P212ISBN 1 85942 072 9

Lindapter is a member of SCIand BCSA

1) Type HB (HB16 and HB20 only) require the thickness of the outer ply (min t) to be at least 8mm. If necessary, spacerwashers should be used beneath the collar to increase the thickness to 8mm.

2) The Hollo-Bolt® can be used on a wide variety of steel hollow shape sections; safe working loads shown are based on usein S275 structural hollow section. The safe working loads, in both tension and shear, are applicable to the Hollo-Bolt® only.Failure of the section, particularly on those with thin walls and a wide chord face, could occur at a lower figure and itsstrength should be checked by a qualified structural engineer.

For Eurocode design please refer to page 44.

Order example: HB08-1 BZP plus JS 500

Product Bolt Clamping Outer Sleeve Collar Tightening- Safe Working Loads2)

Code Thickness Ply1) Height Ø Torque (5:1 Factor of Safety)W min t Length Outer Ø H D A/F Tensile Single Shearmm mm L d d mm mm Nm kN kN

HB08-1 M8x50 3 - 22 - 30

HB08-2 M8x70 22 - 41 - 49 13.75 5 22 19 23 4.0 5.0

HB08-3 M8x90 41 - 60 - 68

HB10-1 M10x55 3 - 22 - 30

HB10-2 M10x70 22 - 41 - 48 17.75 6 29 24 45 8.5 10.0

HB10-3 M10x90 41 - 60 - 67

HB12-1 M12x60 3 - 25 - 35

HB12-2 M12x80 25 - 47 - 57 19.75 7 32 30 80 10.5 15.0

HB12-3 M12x100 47 - 69 - 79

HB16-1 M16x75 12 - 29 8 41.5

HB16-2 M16x100 29 - 50 8 63 25.75 8 38 36 190 21.0 30.0

HB16-3 M16x120 50 - 71 8 84

HB20-1 M20x90 12 - 34 8 50

HB20-2 M20x120 34 - 60 8 76 32.75 10 51 46 300 35.0 40.0

HB20-3 M20x150 60 - 86 8 102

Clearance

Type Hole Ø Hole Distances Edge Distances

d1 min A min B B+C

mm mm mm mm

HB08 14 (+1.0 / -0.2) 35 13 B + C > 17.5

HB10 18 (+1.0 / -0.2) 40 15 B + C > 22.5

HB12 20 (+1.0 / -0.2) 50 18 B + C > 25.0

HB16 26 (+2.0 / -0.2) 55 20 B + C > 32.5

HB20 33 (+2.0 / -0.2) 70 25 B + C > 33.0

A B C

d1 d1

min t

Tel: +44 (0) 1274 521444 © Lindapter International 2011 www.lindapter.com

Bolt Diameter, Hole and Edge distances for allvariants of Type HB excluding Flush FitFor Flush Fit figures see page 43.


Type HBFF - Hollo-Bolt®Flush FitSteel, bright zinc plated plus JS 500Steel, sheraplexStainless Steel Grade 316

Registered in the European Community under theDesign Numbers: 000797147-0001, 000797147-0002,000797147-0003, 000797147-0004

W

min t

L

D

H

d

Installation NutA/F

Sleeve

Cone

The latest Hollo-Bolt® creates immense opportunity for architecturaldesign as the bolt is concealed within the steel with no protruding bolthead or collar. Installation is fast and simple using Lindapter's innovativeinstallation nut (one included per box) allowing the Flush Fit to beinstalled without the requirement of specialist skills or equipment.

1. Align pre-drilled fixture andsteelwork. Insert Hollo-Bolt®

through fixture and steelwork.

2. Apply installation nut and grip nutwith an open ended spanner.

3. Using a torque wrench, tighten thecentral counter-sunk bolt to therecommended torque.

43

Cavity FixingsType HBFF - Hollo-Bolt®Flush Fit 2

A

90º

Installation nut

B C

d1

d2

d1

Installation Hollo-Bolt®Flush Fit

t1

Product Counter Clamping Outer Sleeve Collar Installation Tightening Safe Working Loads1)

Code Sunk Thickness Ply Overall Tool Torque (5:1 Factor of Safety)Bolt Length Outer Ø Height Ø A/F Tensile Single

(inc. collar) ShearW min t L d H D

mm mm mm mm mm mm mm mm Nm kN kNHBFF08-1 M8x50 10 - 27 8 35

HBFF08-2 M8x70 27 - 45 8 54 13.75 5 24 19 23 4.0 5.0

HBFF08-3 M8x90 45 - 64 73

HBFF10-1 M10x50 12 - 27 10 36

HBFF10-2 M10x70 27 - 45 54 17.75 6 30 24 45 8.5 10.0

HBFF10-3 M10x90 45 - 64 73

HBFF12-1 M12x55 12 - 30 10 42

HBFF12-2 M12x80 30 - 52 64 19.75 7 33 30 80 10.5 15.0

HBFF12-3 M12x100 52 -74 86

Bolt Diameter, Hole and Edge Distances Type HBFF

Clearance Countersunk

Type Hole Ø Ø Depth Hole Distances Edge Distances

d1 d2 t1 min A min B B+C

mm mm mm mm mm mm

HBFF08 14 (+1.0 / -0.2) 27 6.5 35 13 B + C > 17.5

HBFF10 18 (+1.0 / -0.2) 31 6.5 40 15 B + C > 22.5

HBFF12 20 (+1.0 / -0.2) 35 7.5 50 18 B + C > 25.0

Order example: HBFF08-1 BZP plus JS 500 without / with ____ installation nut(s)


1) The Hollo-Bolt® can be used on a wide variety of steel hollow shape sections; safe working loads shown are based on use in S275structural hollow section. The safe working loads, in both tension and shear, are applicable to the Hollo-Bolt® only. Failure of thesection, particularly on those with thin walls and a wide chord face, could occur at a lower figure and its strength should bechecked by a qualified structural engineer.

Lindapter Catalogue 11 UK:- 1/11/11 12:01 3


Designation Nominal Size Tensile Shear Material StrengthFt,Rk (kN) Fv,Rk (kN) of Sleeve N/mm2

HB08 M08 23.1 32.9 430HB10 M10 39.6 54.2 430HB12 M12 45.8 71.0 430HB16 M16 84.3 139.0 430HB20 M20 124.0 211.0 390HBST08 M08 26.8 30.7 500HBST10 M10 46.0 51.0 500HBST12 M12 53.3 65.0 500HBST16 M16 98.0 128.0 500HBST20 M20 154.0 205.0 500


HBBH/HBFT/HBPR M08 23.1 32.9 430HBBH/HBFT/HBPR M10 39.6 54.2 430HBBH/HBFT/HBPR M12 45.8 71.0 430

Standard Hollo-Bolt®

Button Head / Security Hollo-Bolt®

Characteristic values of tensile and shear resistance for Hollo-Bolt®

taken from ETA-10/0416www.lindapter.com/about/CE

Cavity FixingsTensile and Shear Resistance Hollo-Bolt® 2


HBCSK08 M08 23.1 32.9 430HBCSK10 M10 39.6 54.2 430HBCSK12 M12 45.8 71.0 430HBCSK16 M16 84.3 139.0 430HBSTCSK08 M08 26.8 30.7 500HBSTCSK10 M10 46.0 51.0 500HBSTCSK12 M12 53.3 65.0 500HBSTCSK16 M16 98.0 128.0 500

Countersunk Hollo-Bolt®


HBFF08 M08 23.1 32.9 430HBFF10 M10 39.6 54.2 430HBFF12 M12 45.8 71.0 430HBSTFF08 M08 26.8 30.7 500HBSTFF10 M10 46.0 51.0 500HBSTFF12 M12 53.3 65.0 500

Flush Fit Hollo-Bolt®

The characteristic values for the Hollo-Bolt listed in the above tables are for use when designing bolted connections to Eurocode 3 only,these are not standard safe working loads.

Hollo-Bolt® lengths 1, 2 and 3 are covered by this ETA-10/0416.The characteristic values are used to determine the design resistance of the Hollo-Bolt®.The design resistance is calculated by dividing the characteristic value by a partial factor gM2.The partial factor is a nationally determined parameter (gM2 =1.25 in the UK).For standard Hollo-Bolt® safe working loads with a factor of safety of 5:1 please refer to the Hollo-Bolt® tables on pages 42 an 43.

The characteristic values are valid for the Hollo-Bolt® assembly itself, in any connection detail the design resistance of the connection may be limited toa lesser value. For example, when the thickness of the connected component is small, pull out failure may occur before failure of the Hollo-Bolt®.

Design checks should be carried out on the section member to determine the static design resistance.

The SCI Greenbook publication P358 Joints in Steel construction, Simple Joints to Eurocode 3 contains a number of checks on the section.The characteristic values are only valid when the Hollo-Bolts are installed as per our installation instructions.

Stainless Shera- Hot DipType M8 M10 M12 M16 M20 JS500 Steel plex Galv.

Hex Head � � � � � � � � �

Flush Fit � � � � � �

Countersunk � � � � � � �

Button Head � � � � � �

Availability of Lindapter Head Variations

Flush Fit Countersunk(Head)

Hexagonal Head Button HeadSecurity



Cavity FixingsType LB2 - Lindibolt 2® 2

Type LB2 - Lindibolt 2®

Steel, bright zinc platedStainless Steel Grade 316

Locknut

Setscrew

Main Body

Nut

Cone

W

F

D C

Z

PY

A self heading bolt suitable for connecting steelwork to hollow-sections,tubes and where access is available from one side only. The Lindibolt 2®

uses a standard clearance hole.

1. Set nut (C) at (W) plus projection (P).Tighten Locknut (D).

2. Align pre-drilled fixtures. Insert Lindibolt® through both fixtures,cone end first.

3. Hold nut (C) with spanner and tighten bolt (F).Loosen off locknut (D) and tighten nut (C).Secure by re-tightening locknut (D).

Installation

Safe Working Load1)

Product Lindibolt® Hole Ø (Factor of Safety 5:1) Clamping Projection Main Body B and Nut C&D Setscrew FCode Size Length d Tensile Single Length Thread Tightening Bolt Tightening

Z Y min max Shear W P Z Torque A/F F Torque A/Fmm mm mm kN kN mm mm mm Nm mm Nm mm

LB10 M10 69 11 11.5 3.0 3.4 7 - 30 7.5 - 10 M10 20 17 M5 6 8

LB12 M12 80 13 13.5 5.0 5.0 10 - 36 9 - 12 M12 31 19 M6 11 10

LB16 M16 105 17 17.5 8.0 9.8 12 - 48 12 - 16 M16 81 24 M8 23 13

LB20 M20 128 21 21.5 14.0 15.2 14 - 60 15 - 20 M20 129 30 M10 45 17

LB24 M24 158 25 25.5 20.0 22.5 18 - 72 18 - 24 M24 203 36 M12 80 19

1) The safe working loads, in both tension and shear, shown above are applicable to the Lindibolt 2® only.Failure of the section, particularly on those with thin walls and a wide chord face, could occur at a lower figure and its strength should be checked.

Order example: LB10 BZP

W

Washer

d


46

Cavity FixingsTypical Applications 2

HB001 HB002

HB003 HB004

HB005 HB006



47

Cavity FixingsTypical Applications 2

HB007 HB008

HB009 HB010

HB011 HB012



hollo bolt technical information file029418

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