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.
Swann Insulated Bootlace Ferrule - 2.5mm² Grey T Range
Insulated bootlace ferrule for 2.5mm² cable conductors
Unicrimp Ring Terminal - 6mm Yellow 100 Pack
Pre-insulated yellow ring terminal, 6mm stud, pack of 100
Your Esssentials Fully Insulated Female Spade Crimp Terminal - 2.8mm Red
Fully insulated female spade crimp terminal, 2.8mm red
Insulated Crimp Pin Terminal - 1.9mm x 12mm, 1.5mm² - 2.5mm², 27A Blue 100 Pack
Insulated crimp pin terminal, blue, 1.9x12mm, 1.5–2.5mm², 27A, 100 pack
Flared Entry Cable Lug - M10, 10mm² 10 Pack
M10 flared entry cable lug for 10mm² cable, pack of 10
Unicrimp Terminal Ring - 5mm Yellow 100 Pack
Pack of 100 yellow pre-insulated ring terminals, 5mm size.
Your Esssentials Copper Uninsulated Cable Lugs Flared Entry - 120mm² - 16mm hole
Copper 120mm² uninsulated cable lug with 16mm hole for stud termination
Haydon RG59 BNC Male Crimp Connector Copper Pin - Nickel Plated 100 Pack
100 RG59 BNC male crimp connectors, nickel-plated copper pins, for TV/satellite
Swann Uninsulated Reducing Pin Terminal - 50mm²
Uninsulated reducing pin terminal for 50mm² cable
Unicrimp Ring Terminal - 5mm Red 100 Pack
Red pre-insulated ring terminal, 5mm, pack of 100
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.









