Best Wire Crimping Tool for Non-insulated Terminals (2026)

A trailer light goes dark on a Friday night, and the fault turns out to be a ring terminal that was squeezed flat with pliers instead of crimped. The right fix is a crimper made for the job, and the best wire crimping tool for non-insulated terminals is the one whose dies match the terminal in your hand, with a ratchet that finishes the squeeze for you. This guide compares 5 ratcheting crimpers by AWG range, marked cavities, star wheel adjustment, grip and warranty.

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Picks for the garage

#	Product	Shop Score	Buy
1	haisstronica Crimping Tool for Non-Insulated	9.6/10	Buy on Amazon
2	haisstronica Crimping Tool for Open Barrel	9.5/10	Buy on Amazon
3	Noxtren Non-Insulated Terminal Crimping Tool	9.5/10	Buy on Amazon
4	Klein Tools 3006CR Crimping Tool for Non-Insulated	9.5/10	Buy on Amazon
5	Crimping Tool for Non-Insulated Open Barrel	9.4/10	Buy on Amazon

1

haisstronica Crimping Tool for Non-Insulated

haisstronica·9.6/10 Shop Score

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The Shop Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A ratcheting crimper for non-insulated terminals in AWG 22-8, with engraved size marks, an adjustable star wheel, a quick-release lever and a 12-month replacement warranty.

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Pros

• AWG 22-8 range, reaching AWG 8 where no other pick here goes
• Engraved size marks for easy identification
• Adjustable star wheel sets crimp height for each terminal size
• 12-month replacement warranty, plus a 30-day money-back term

Cons

• Title model HS-7327 disagrees with spec table model HS-1167
• No spade terminal sizes stated
• Non-insulated terminals only in the stated use
• No electrical safety listing stated

2

haisstronica Crimping Tool for Open Barrel

haisstronica·9.5/10 Shop Score

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The Shop Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A ratcheting crimper for non-insulated open barrel terminals in AWG 22-10, with marked cavities, an adjustable star wheel and a quick-release lever.

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Pros

• Marked cavities for AWG 22-20, 20-18, 18-14 and 12-10
• Adjustable star wheel sets the crimp height
• Full ratchet with quick-release lever
• 12-month replacement warranty stated

Cons

• AWG range ends at 10, with no cavity for AWG 8 or 6
• Nylon handle rather than a dual-material grip
• No cavity markings for spade or ring terminals by name
• Pack holds 1 tool, with no spare dies listed

3

Noxtren Non-Insulated Terminal Crimping Tool

Noxtren·9.5/10 Shop Score

i

The Shop Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A ratcheting crimper covering AWG 22-6 and 0.5-16mm² for butt, ring, fork and spade terminals, with a steel body and a how-to video and manual.

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Pros

• Widest range here: AWG 22-6, 0.5-16mm²
• Marked slots for 22-14, 12-10, 8 and 6 AWG
• High-hardness steel body with plated steel jaws
• How to Use video and online manual included

Cons

• No warranty term stated
• No item weight stated
• Thicker terminals need both hands
• No star wheel adjustment stated

4

Klein Tools 3006CR Crimping Tool for Non-Insulated

KLEIN TOOLS·9.5/10 Shop Score

i

The Shop Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A 5-cavity ratcheting crimper for non-insulated terminals on 10 to 22 AWG stranded copper wire, with adjustable compound action.

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Pros

• 5 cavities in one tool: 22-18, 18-14, 14-12, 12-10 and 10 AWG
• Compound action adjusts crimping force
• Full-cycle ratcheting for uniform crimps
• Cavity design crimps from both sides

Cons

• Warranty is call vendor, with no term stated
• Listed thickness of 0.1 inches reads like a listing error
• Range stops at 10 AWG, with no cavity for AWG 8 or 6
• No star wheel adjustment stated

5

Crimping Tool for Non-Insulated Open Barrel

Pliertool·9.4/10 Shop Score

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The Shop Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A ratcheting crimper for non-insulated open barrel terminals in AWG 20-10, with marked dies, a star wheel and a cushioned grip.

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Pros

• Clearly marked dies for AWG 20-18, 18-14 and 12-10
• Star wheel adjusts crimping height
• Ergonomic cushioned grip with non-slip texture
• Stated for heat shrink connectors as well

Cons

• Narrowest range here, AWG 20-10
• No warranty term stated
• No item weight or dimensions stated
• Heat shrink note sits oddly beside open barrel dies

Compared on paper

Every rating comes from the brand’s listing and is not a shop test (gathered 11 November 2026).

How we scored the best wire crimping tool for non-insulated terminals

Each crimper is scored on performance, build, value, safety and warranty, with the weights published on our How We Pick page. A full-cycle ratchet that finishes the crimp earns safety points, and a stated warranty term earns warranty points. How we pick explains the weights.

No score drops under 9.2 or climbs past 9.8; a tool’s place inside those bounds is set by its weighted point total.

What the listings tell you

We read 5 wire crimping tool listings. Each of the 5 states a ratcheting mechanism, and each of the 5 names non-insulated terminals in the listing. An adjustable star wheel is stated on the haisstronica HS-5327, the Pliertool and the haisstronica HS-7327. Only the haisstronica HS-5327 states a warranty term, a 12-month replacement warranty beside a 30-day money-back term. The haisstronica HS-5327 and the Klein list an item weight. No listing states an electrical listing, so safety points here come from the ratchet, not from a certification mark.

Buying guide: a wire crimping tool for non-insulated terminals

AWG range first

Match the crimper to the terminals you already own. The picks here span AWG 22-6 on the Noxtren down to AWG 20-10 on the Pliertool, with the Klein covering 10 to 22 AWG stranded copper wire and the haisstronica HS-7327 covering AWG 22-8. A die marked for the wire size keeps the crimp from cutting strands or leaving the terminal loose.

Open barrel dies

The die has to match the terminal, so the cavity markings do the work. The haisstronica HS-5327 marks AWG 22-20, 20-18, 18-14 and 12-10, while the Klein marks 5 cavities from 22-18 AWG through 10 AWG. Match the wire size, terminal size and die position before crimping, as the Noxtren listing advises.

Ratchet and star wheel

A full-cycle ratchet holds pressure through the squeeze and releases when the crimp is done, so each crimp lands the same way. A star wheel adjusts crimp height for the terminal at hand, and a quick-release lever opens the jaws when you need to reposition. The haisstronica HS-5327, the Pliertool and the haisstronica HS-7327 state a star wheel, while the Klein uses adjustable compound action instead.

Grip and size

Crimping is hand work, so the handle decides how your hand feels after a row of terminals. The haisstronica HS-5327 has a nylon, non-slip handle, the Noxtren has TPE+PP dual-material handles with an anti-slip texture, and the Pliertool has an ergonomic cushioned grip. The Klein measures 8.93 inches by 3.04 inches, and the Noxtren is listed at 9 inches long, so both fit a toolbox drawer.

Garage Fit Check

• Check the AWG range against the terminals in your drawer before the first crimp: the picks here cover AWG 22-6 through AWG 20-10.
• The Klein measures 8.93 inches by 3.04 inches and the Noxtren is listed at 9 inches long, so both stow in a toolbox drawer or on a pegboard.
• No cord or charger is listed for any of the 5, so they store with your hand tools and need no outlet.
• Keep the marked cavities visible and match the die to the terminal before squeezing, as the Noxtren listing advises.

FAQ: garage tools

What AWG range do I need for non-insulated terminals?

It depends on the terminals in your drawer. The picks here cover AWG 22-6 on the Noxtren, AWG 22-10 on the haisstronica HS-5327, 10 to 22 AWG on the Klein, AWG 20-10 on the Pliertool and AWG 22-8 on the haisstronica HS-7327. Pick the crimper whose marked cavities cover the sizes you crimp most.

What is an open barrel terminal?

The listings here describe open barrel terminals as terminals crimped with marked cavities that fold around the wire without damage to the shell, as the haisstronica HS-5327 listing puts it. The dies are marked by AWG range, so you match the terminal to the cavity before squeezing.

Do I need a ratcheting crimper?

A ratchet helps. Each of the 5 listings here states a ratcheting mechanism, and the ratchet holds pressure through the crimp and releases when the crimp is done. A quick-release lever opens the jaws when you need to reposition, which the haisstronica HS-5327, the Pliertool and the Noxtren all state.

Can one crimper cover butt, ring, fork and spade terminals?

The Noxtren is listed for butt, ring, fork and spade terminals in AWG 22-6, covering 0.5-16mm² wire sizes. The other picks name open barrel terminals and receptacles in general, so check the terminal style against the listing before buying.

What does the star wheel do?

The star wheel adjusts crimp height, which sets the crimping force for the terminal at hand. The haisstronica HS-5327, the Pliertool and the haisstronica HS-7327 state an adjustable star wheel, while the Klein uses adjustable compound action instead.

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