Crimps come down to two things: the conductor size you’re working with and the finish the job needs. Insulated versions are usually the quick pick for general terminations, while uninsulated types suit tighter spaces or a more compact connection. Ring crimps hold where the fixing must stay put. Spade and fork styles make removal easier later. If you’re matching existing work, check the format first - that’s where most call-backs start.
Termination Technology Copper Tube Butt Connectors - 6mm 10pk
Copper butt connectors for 6mm² cable, 10-pack, 22mm length
Your Esssentials Uninsulated Flared Entry Cable Butt Connector - 35mm² 10 Pack
Through splice crimp connector for joining 35mm² cable ends, pack of 10
Unicrimp QYB Terminal Butt Connector - 100 Pack
Unicrimp pre-insulated butt connector, 100 pack
SWA Tube Terminal - 25mm M8 Copper
25mm copper tube terminal with M8 thread
Unicrimp Copper Tube Lug - 12mm 5 Pack
Copper tube lug, 12mm, 5-pack
Your Esssentials Insulated Male Spade Crimp Terminal - 6.35mm 4mm²-6mm² 24A Yell…
Insulated male spade crimp, 6.35mm tab, 24A, 4-6mm² wire, 100 pack
Insulated Crimp Ring Terminal - 4.4mm, 4mm² - 6mm², 48A Yellow 100 Pack
Yellow insulated crimp ring terminal, 4mm²-6mm², 48A, 100-pack.
Your Esssentials Insulated Crimp Terminal Blade - 18.4mm x 2.3mm Blue
Insulated crimp terminal blade in blue, 18.4mm x 2.3mm.
Insulated Crimp Ring Terminal - 6.4mm 1.5mm²-2.5mm² 27A Blue 100 Pack
Blue insulated ring terminal, 6.4mm stud, 1.5-2.5mm² wire, 100-pack
Uninsulated Flared Entry Cable Butt Connector - 16mm² 10 Pack
Uninsulated flared butt connector for 16mm² cables, pack of 10
Start with the space you’ve got and how the connection needs to sit. In a crowded enclosure or tight panel, smaller crimps save grief because bulky sleeves and oversized barrels get in the way. If the termination may be disturbed, pick a form that stays put. If it needs to come off again, choose the layout that gives you access without fighting the fixing. Most call-backs I’ve seen come from the wrong size or a poor match to the job, not the crimp itself.
Insulated and uninsulated crimps are usually the first split. Insulated versions suit quicker general terminations, with the sleeve taking some of the strain. Uninsulated crimps are the neater choice when space is tight or you are finishing inside a panel.
After that, the terminal shape does the real sorting. Ring crimps hold the fixing in place. Spade or fork crimps make more sense when you may need to lift the connection again. Cable crimps, wire crimps and electrical crimps are the main formats you are choosing between, and crimp connectors are the broader label when you want a straight join rather than a fixed terminal. If you are matching a job out across Cable & Cable Management, that is the point to narrow it down. The wrong layout usually causes the comeback, not the crimp itself.
Start with conductor size and the finish you need. Then check how much room you’ve got, and whether the joint needs to stay fixed or come off again.
Insulated crimps give quicker identification and a bit of protection around the barrel. Uninsulated types suit tighter spaces or a neater assembly where every millimetre matters.
Ring crimps stay put on a fixed point. Spade crimps make more sense when the connection may need to come off later.
If the job sits in conduit or a tighter run, Metal Conduit & Accessories can push you towards slimmer terminals. Check Cable before you order as well. A poor match there is what usually brings the call-back, not the crimp.
Once you’ve picked the crimps, the next call is what finishes the run and keeps the job tidy. If the cable is still exposed, you are usually into cable management, cable sleeving or cable ties rather than more connectors.
Where the run passes through metalwork, glands and grommets matter more than another terminal. On bigger jobs, label printing saves time at test and handover, and electrical tape still gets used for marking and dressing. Most of the comeback comes from the surrounding finish being left loose, not the crimp itself.









