Non-Insulated Wire Ferrules (Uninsulated Bootlace Ferrules)

Product overview

Three reasons to specify one:

• The terminal has no room for a collar — deep-recessed or closely spaced terminals where the plastic body would foul.
• Temperature. No nylon means no 105 °C ceiling on the insulation.
• Size. This series runs to 185 mm² / 445 A, beyond where the insulated range stops at 150 mm².

Without a collar there is no colour coding. Cross-section has to be identified from the part marking or from the packaging, so keep sizes separated in the workshop.

Non-insulated ferrule specifications

Dimension letters: L overall length · W width across the crimp · D outside Ø · C inside Ø. All dimensions in mm. There is no separate pin length — the whole part is barrel.

Non-insulated ferrule sizes: 0.3 – 6 mm²

Each row lists every available length for that cross-section. Part numbers follow the pattern cross-section + length, e.g. HEN1508 = 1.5 mm², 8 mm long.

AWG values in the specification tables are Termnex product catalogue and packaging labels, not mathematical conversions. Use the conductor’s marked mm² cross-section as the primary ferrule size.

Crimp tool: SN-06WF

Non-insulated ferrule sizes: 10 – 185 mm²

Crimp tool: HX-35WF to 35 mm²; hydraulic crimper above that.

Need every series at one cross-section? 0.5 mm² · 0.75 mm² · 1 mm² · 1.5 mm² · 2.5 mm² · 4 mm² · 6 mm² · 10 mm² · 16 mm² · 25 mm² · 35 mm² · 50 mm². Each page puts the insulated, twin and non-insulated models for that conductor size in one table, with the AWG equivalent and the DIN collar colour.

Ordering non-insulated wire ferrules

• Sold by the pack. Note that small sizes come 2000 per pack, double the insulated equivalent — the parts are smaller without a collar.
• No colour options — the part is bare tinned copper.
• HEN2508 and HEN6012 are selected Termnex stock configurations after incoming inspection.
• Other catalogue sizes and lengths are available to order; quantity and lead time are confirmed with the quotation.
• Factory packs are not split by the manufacturer.
• For mixed-size boxes covering 0.5–2.5 mm² or 4–16 mm², compare the non-insulated ferrule assortments.
• Model-specific Declaration of Conformity and supporting compliance documents can be reviewed with the quotation.

Need the insulated version? See insulated wire ferrules or twin wire ferrules.

FAQ

When should I use non-insulated instead of insulated ferrules?

When the terminal has no clearance for a plastic collar, when the ambient temperature is above what PA66 will take, or when the conductor is larger than 150 mm² — the insulated range does not go that high.

How do I tell the sizes apart without colours?

By the part marking and by keeping them in their original packaging. This is the practical cost of going non-insulated, and it is the main reason most control panel builders use the insulated version for everything under 6 mm².

Are these UL listed?

Not on this series. Selected insulated models are cULus Listed to UL 486F; the non-insulated range is not. Ask us before specifying them into a UL-listed panel build.

Do they need a different crimp tool?

No. The same square crimp profile applies. Sizes above 35 mm² need a hydraulic or heavy mechanical crimper, insulated or not.

What is the largest size available?

185 mm² (HEN185-32), rated 445 A — the largest size listed in this series. Stock and lead time are confirmed with the quotation.