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Bare metal butt splice connectors, pack of 50

3M

3M MU10BCHTX Butt Splice Connector 12-10 AWG Pack of 50

SKU CH-5826-BY3V8

Bare metal butt splice connectors for 12-10 AWG wire, crimp termination, 50 per pack

  • Product typeBuilding Wire
  • Crimp connection ensures secure splices for 12-10 AWG wire
  • Bare insulation allows visual inspection of crimp quality
  • 56 in length fits tight junction boxes
  • Pack of 50 supports multiple wiring projects
  • 3M brand delivers reliable electrical performance

Application & Purpose

3M MU10BCHTX butt splice connectors join 12-10 AWG building wire using a crimp connection. The bare metal barrel leaves the conductor exposed for direct contact. A pack of 50 suits electricians, maintenance crews and DIYers who need a reliable inline splice for residential or light commercial wiring jobs.

Sustained Load Behaviour

The bare barrel provides a solid metal-to-metal joint that maintains conductivity under continuous current without an insulating sleeve to trap heat. Crimp quality determines long-term resistance; a properly compressed joint resists loosening from vibration or thermal cycling. The connectors contain no plastic or nylon insulation that could degrade over time.

Replacement & Upgrade Context

These replace older crimp sleeves or twist-on connectors when a compact, uninsulated barrel is preferred for tight boxes or when the installer adds separate heat-shrink or tape. The jump is worth it for jobs requiring a short 0.56 in overall length and a clean bare-metal profile. Not suited for buyers who need pre-insulated sleeves, larger gauge ranges or UL-listed insulated connectors.

How it compares

Measured against everything we stock in Wire, Cable & Wiring Supplies, at today’s prices. Recalculated every night.

Price $40.99
Pricier than about 62% of the 1,610 comparable items (median $25.99).

Specifications

Product
Brand name3M
Product typeBuilding Wire

Questions about this item

How much heat does the bare-metal splice generate when it carries full-rated current all day?

The bare copper barrel has no insulation, so it dissipates heat directly into the surrounding air; the crimp joint stays cool as long as the wire gauge matches the 12-10 AWG range.

What crimp tool and wire gauge must I already own to install these splices?

You need a ratchet crimper sized for 12-10 AWG and stranded or solid copper wire in that same gauge range.

Will these 0.56 in splices fit inside the older terminal blocks I already have mounted?

Each splice measures 0.56 in overall length, so it fits most legacy blocks designed for standard butt connectors.

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