Versatile design for varied installations

Standard Multi-Lock bodies have 7 fixing points, 6 external and 1 elongated internal fixing point. Standard catches have 4 possible fixing points. In a Multi-lock installation it is not necessary to use all fitting points but at least two bolts should be used to secure each component. All fixings points are designed to accept M10 (3/8") dome-head cup-square bolts (coach or carriage bolts) we recommend that shear nuts rather than conventional nuts are used. If conventional nuts are to be used the nuts should be welded in the tightened positions and the weld treated with zinc rich paint. For ram-raid resistant installations, High-Tensile bolts and as many fixings points as possible should be used. As an alternative to a bolted installation the Multi-Lock can be welded in place. Care must be taken though, the lock must be clamped or tacked in place to check for functionality prior to completion of the welding. It is also advisable to dress-back all zinc in the immediate vicinity of the weld prior to welding to avoid the production and subsequent inhalation of zinc byproducts. Please also note that Multi-Lock are stainless steel and dissimilar welding consumables are required.

	Standard body and catch on an RHS framed gate For RHS or box section frames Multi-Locks can be easily installed using M10 (3/8") dome-head cup-square bolts (coach or carriage bolts). A standard fitting template is supplied to ensure all the correct tolerances are observed during installation. We recommend that shear nuts rather than conventional nuts are used, however if conventional nuts are to be used the nuts should be welded in the tightened positions and the weld treated with zinc rich paint. For ram-raiding resistant installations as many fixings points as possible should be utilised and High-Tensile bolts should be used.
	Standard body & catch on an outward opening door Multi-Locks can be bolted to outward opening doors using M10 (3/8") dome-head cup-square bolts (coach or carriage bolts). A standard fitting template is supplied to ensure all the correct tolerances are observed during installation. We recommend that shear nuts rather than conventional nuts are used. Rebating of the door and door-frame for the catch and nuts may be required. It is recommended that fire regulations are checked before installation commences if the lock is to be fitted on a fire door.
	Tubular body & chain catch on a CHS (pipe/Tube) gate For CHS (tube/pipe) section frames Multi-Locks can be easily installed using the fitting kit supplied with all Tubular Multi-Locks. The fitting kit includes a security back bracket and all M10 (3/8") dome-head cup-square bolts (coach or carriage bolts) and shear nuts required for a secure installation. For ram-raiding resistant installations it is recommended that the supplied bolts be replaced High-Tensile bolts.
	Standard body and chain catch on a RHS framed gate For timber, RHS or box section frames Multi-Locks can be easily installed using M10 (3/8") dome-head cup-square bolts (coach or carriage bolts). The chain is secured on either the other member to be restricted or on the same member as the lock body is installed to. The loose end of the chain (once the chain is trimmed to length) is retained by a bolt with heavy grade oversize washers or a u-bolt. We recommend that shear nuts rather than conventional nuts are used, however if conventional nuts are to be used the nuts should be welded in the tightened position and the weld treated with zinc rich paint. For ram-raiding resistant installations as many fixings points as possible should be utilised and High-Tensile bolts should be used.
	Standard body and catch on an RHS posted swinging barrier For swinging barriers with timber, RHS or box section posts Multi-Locks can be easily installed using M10 (3/8") dome-head cup-square bolts (coach or carriage bolts). This fixing style is discussed in detail in our barrier installation page which includes a downloadable fixing detail. For ram-raiding resistant installations as many fixings points as possible should be utilised and High-Tensile bolts should be used.
	Standard body and catch on an CHS posted swinging barrier For swinging barriers with CHS (tube or pipe) section posts Multi-Locks can be easily installed using M10 (3/8") dome-head cup-square bolts (coach or carriage bolts) fitted inside the multi-Lock body using the longitudinal fixing slot. This fixing style is discussed in detail in our barrier installation page which includes a downloadable fixing detail. The diagram shows a standard Multi-Lock without a fixing plate, this item should be ordered direct from Technical Support. For ram-raiding resistant installations High-Tensile bolts should be used.
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