Spanners & Wrenches

Spanners and wrenches are hand tools that grip and turn nuts, bushes and fittings, and for electricians a conduit bush wrench is one of the most useful. This category currently stocks a conduit bush wrench, used to tighten male bushes and couplings inside steel boxes and enclosures where ordinary spanners will not reach.

It is a simple tool that makes conduit terminations tidier and more secure. Account holders benefit from trade pricing, and orders placed before 5pm Monday to Friday arrive next working day across Northern Ireland and ROI.

Conduit Bush Wrench by Meteor Electrical

T4755 In-Stock

C.K Conduit Bush Wrench T4755

£18.49 inc. VAT

T4449 In-Stock

C.K Ball End Hexagon Key Set Metric Coloured 9 Piece 1.5-10mm T4449

£36.23 inc. VAT

T4665 Ships in 3 - 5 days

C.K Vorteck Impact Socket Set 1/4in Drive 15 Piece T4665

£44.58 inc. VAT

Choosing spanners and wrenches for conduit and electrical work

Electrical installers need spanners and wrenches for conduit fittings, glands, earthing studs and strut fixings. The current range is focused on the conduit bush wrench, but the guidance below applies to building a wider spanner kit.

What a conduit bush wrench does

When steel conduit enters a box or enclosure, it is typically secured with a coupler outside and a male bush inside. The bush wrench fits the slots or flats of the bush so it can be tightened firmly from inside the box, giving a sound mechanical connection. That matters because a steel conduit system may be used as a protective conductor, so continuity across joints is important; check current wiring regulations and test continuity after installation.

Other useful spanners and wrenches

Combination spanners – open end and ring end in one, in common metric sizes such as 10mm and 13mm for M6 and M8 nuts.
Gland spanners – for tightening SWA cable glands and locknuts.
Adjustable wrenches – a single tool covering multiple sizes, handy for odd fittings.
Waterpump pliers – adjustable grips for glands, locknuts and conduit fittings.

Tips for use

Use the correct size tool so it does not round off nuts or bushes, pull rather than push on a spanner where possible and avoid extending handles for extra leverage. Insulated spanners are available for work near live parts, but always isolate first.

Related products

See steel conduit and fittings, cable glands and waterpump pliers.

Meteor Electrical has served the trade from Cookstown for over 40 years, with free delivery over £30 or €35 ex VAT and help on 028 8675 1515.

FAQ's Ask Your Own Question

What is a conduit bush wrench used for?: A conduit bush wrench is used to tighten the male bush that secures steel conduit to a box, enclosure or trunking from the inside. It engages the bush so you can apply proper torque without damaging the fitting, giving a firm mechanical joint and good electrical continuity where the conduit is used as a protective conductor.
What spanner size fits an M6 or M8 nut?: A standard M6 hexagon nut usually takes a 10mm spanner, and an M8 nut usually takes a 13mm spanner. M10 nuts typically need 16mm or 17mm depending on the standard. Some roofing bolt nuts and specialist fasteners vary, so check the fit before applying force to avoid rounding the corners.
Can I tighten conduit bushes with pliers?: Pliers can grip a bush but tend to slip and chew the edges, and they rarely give the same tightness as a proper bush wrench. A loose bush can affect earth continuity in a steel conduit system. Using the correct wrench gives a cleaner, more secure termination, which should then be confirmed with a continuity test.
Do I need insulated spanners?: Insulated VDE spanners are designed for work near live parts, for example in distribution boards where some conductors may remain energised. For most installation work the equipment should be isolated, so standard spanners are adequate. Your risk assessment and safe working procedures should decide when insulated tools are required.
What tool tightens SWA cable glands?: SWA glands are usually tightened with gland spanners or a pair of correctly sized open-ended spanners, holding one part while turning the other. Adjustable waterpump pliers are sometimes used but can mark the gland. Tighten to the manufacturer's instructions so the armour is clamped and the seal is effective, without over-compressing.
Can I get a conduit bush wrench delivered tomorrow?: If it is in stock and ordered by 5pm Monday to Friday, the conduit bush wrench will be delivered the next working day anywhere in Northern Ireland or the Republic of Ireland. Delivery to England, Scotland and Wales takes 3–5 working days. You can also use Click & Collect at the Cookstown trade counter.