t hollobolt

7/26/2019 T HolloBolt

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Type HB - Hollo-Bolt

The Lindapter Hollo-Bolt is a patented method of securing to square, rectangular or circular

hollow section steel, or to conventional steelwork where access is available from one side

only. warded

the !esign "ouncil#s $illennium %roducts status for innovation in connecting to hollow section,

the

Hollo-Bolt also has third party endorsements from "orus and the &'#s (teel "onstruction

)nstitute.

The Hollo-Bolt offers a tremendous reduction in installation time and costs over traditional

methods,

as well as giving the specifier absolute confidence through guaranteed loads with a built in

factor

of safety. *or aggresive environments, the Hollo-Bolt comes with +( protection as

standard

and is available in stainless steel if the application demands.

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M16 and M20 sizes feature a collapse mechanism to maximise clamping force

and enable us to use as a primary moment connection

Typical Hollo-Bolt applications include the connection or suspension of

/ %rimary (teelwork / *ire %rotection (ystems

/ (econdary (teelwork / 0lectrical 0quipment

/ $echanical Handling 0quipment / "ladding

/ Lifting 1ear / Blast 2alling

/ 2all Ties / H3" 0quipment

Head !ariations

variety of finishes and colours are available.

Countersunk Button Head Security Socket Head Cap Screw Hexagonal Head

Stainless Steel Hollo-Bolt

2



4 (afe 2orking Loads for the Hollo-Bolt are dependent upon the yield strength of the hollow

section steel particularly with some of the lighter sections. (afe working loads shown above

have been determined through testing in material with minimum yield strength of 56 78mm5.

&se of steel with lower yield strength will result in lower safe working loads. The highest

tensile

figure given for each bolt si9e is the safe working load of the Hollo-Bolt itself. ny lower figures

against a particular si9e show that the mode of failure in that case is the hollow section steel,

rather than the Hollo-Bolt.

442hilst the minimum fi:ing thickness for $;<8$5 is =mm, it is important that the outer ply is

at least =mm to ma:imise shear capabilities. 2here the outer ply is below =mm thickness,

spacer washers should be used beneath the collar to increase to =mm.

444*or further >H( (ection details not listed, please contact our technical department.

The tables abo"e state the #$% &ith a '(1 factor of safety and should be used for

secondary applications) for primary design please consult the guide *oints in

#teel +onstruction - #imple +onnections

The guide provides design guidence for the use of Hollo-Bolt and gives essential

information for structural steelwork connections for use in buildings designed by the?(imple $ethod? i.e.

braced frames where connections carry mainly shear and a:ial loads only.

To obtain further details on the (imple "onnections guide please contact The (teel

"onstruction )nstitute on Tel @AA C ;DAA <5D DA or *a: @AA C ;DAA <55 EAA

%ublished by (")8B"( "onnections 1roup.

%ublication 7umber %5;5 )(B7 ; =EA5 65 E

3



,nstalling the Hollo-Bolt

%erhaps Hollo-Bolt#s greatest advantage is the ease with which the product can be

installed.

!etailed below are the three simple installation stages

#tep 1

!rill holes in required position see hole

preparation table below for recommended

hole si9eC. Fffer up the Hollo-Bolt and fi:ture

to the steelwork the e:ample pictured on the

right shows steel angleC. )nsert product

through both fi:ture and steelwork, cone end

first.

#tep 2

1rip the Hollo-Bolt collar with an open ended

spanner. &sing a torque wrench, tighten the

central bolt to the recommended torque given

in the table above.

4



#tep

The Hollo-Bolt cone is drawn up into the

body, spreading the product legs and

providing a secure fi:ing.

2hen installing in an inverted position,

ensure that the Hollo-Bolt collar is heldfirmly against the fi:ture.

*or ease of installation please use pneumatic tools on primary structural connections.

Hole .reparation

(ome care must be taken both in preparation of the drilled hole for the product and in

the location of the hole with regard to the hollow section steel. The table below gives

guidelines on minimum distance between hole centres for neighbouring Hollo-Bolts GC,

minimum distance of hole centre from inside wall of hollow section steel C and drill si9eto be used IC. The diagram below illustrates these dimensions. "lick Here for Hollo-Bolt

pplication !iagrams.

5

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