Durable 3M MNG18-250DFIX-BOTTLE electrical terminal featuring funnel barrel and corrosion resistant plating

3M Scotchlok Terminals, Kits and Tools

For over 30 years, 3M has been a leading supplier of Scotchlok terminals, disconnects, connectors, and tools for high-performance applications in the assembly and maintenance of electrical systems. Thousands of satisfied customers recognize 3M products for their effective and reliable performance, UL Listed and CSA Certified (where appropriate) status, a wide variety of types, sizes, and materials meeting broad application ranges (including temperature and weather demands), and design features that ensure easy installation. These characteristics simplify the installer's job.

• Brand: 3M
• Product Line: Scotchlok
• Certifications: UL Listed and CSA Certified (where appropriate)
• Key Features: Effective and reliable performance, variety of types/sizes/materials, easy installation, positive wire insertion, elimination of strand hang-ups and wire twisting, easy insulation entry.

Key Product Features and Benefits:

• Insulation Grip: Provides a "second" crimp on wire insulation for additional strain relief, ideal for high vibration applications.
• Funnel Barrel Construction: Ensures positive, easy wire insertion, prevents strand hang-ups, and eliminates the need for wire twisting.
• One-piece, Burr-free Construction: Maximizes electrical conductivity; electrical bright-tin plating offers maximum corrosion resistance; annealing relieves stress points for maximum installed strength.
• Barrel-to-Pad Transition: Minimizes flexing and bending.
• Open-End Design: Allows for visual inspection of wire location before and after crimping.
• Maximum Wire Hold: Achieved through multiple "V" grooves (on #264 AWG parts) for excellent holding power.
• Injection Molded Insulations: High-quality, 221F (105C) rated, tough, resistant electrical grade materials ensure consistent wall thickness for reliability after crimping, facilitate funnel barrel construction, and offer crimp and non-slip ridges.
• Non-slip Ridge: Aids in tool positioning for proper crimping and improved workmanship.
• Beveled Leading Edge: Facilitates easy wire insulation entry.
• High Temperature Terminals: Constructed of steel with nickel plating, rated for continuous use at 900F (482C) for applications like ovens, motors, and light fixtures.
• Heat Shrink Terminals: Offer superior moisture protection and corrosion resistance with adhesive-lined heat shrink material for a seal against contaminants. They also provide improved mechanical performance with enhanced pullout strength and strain relief, and durable tubing resistant to abrasion and aging.

Temperature Ratings:

• Non-insulated 3M terminals withstand temperatures up to 347F (175C).
• Insulated 3M terminals withstand temperatures up to 221F (105C).
• Insulators for vinyl and nylon insulated terminals are rated for a continuous operating temperature range from -40F to 221F (-40C to 105C).

Glossary of Terms:

• Adapters: Used to interconnect two connectors already attached to wires.
• Block Fork: Offers the same strength as a standard fork but is designed for terminal blocks with flat sides against the barrier portion.
• Bullet Style: Provides reliable in-line connection with holding friction when parts are joined, often used in automotive applications.
• Butt Connectors: Feature chamfered barrel ends for fast, easy wire insertion from both ends and a built-in wire stop for correct positioning; must be crimped at both ends.
• Closed-End Connectors: Used for pigtailing two or more wires.
• Flanged Fork: Combines the benefits of block and locking forks, staying secure even if the mounting screw loosens.
• Fork Terminals: Allow rapid wire connection and are typically used on free-standing studs due to their wider tongues.
• Locking Forks: Feature a spring-like tongue that locks onto the stud, even without a tightened mounting screw, requiring extra force for removal.
• Parallel Connectors: Similar to butt connectors but with overlapped wires and a single center crimp, suitable for limited space applications.
• Pin Terminals: Designed for installation in compression blocks, commonly used in Europe for terminating stranded wire.
• Quick Connect (Disconnect): Female part attaches to a mating part via a tongue slipping over a male tab, offering excellent holding force and easy, quick disconnect.
• Ring Terminals: The standard, safest, and most reliable tongue style, removable only after the mounting screw is removed.
• Tab Terminals: Utilize a mounting hole for a rivet or screw.
• Tap Connectors: Eliminate the need for wire stripping; connection is made by laying the wire in the connector and crimping.

Terminal Numbering System Overview:

3M terminals follow a numbering system that includes an Identity Code/Barrel Style, Wire Size Code (AWG), Tongue Code, and Product Availability suffix.

Example Product Number Breakdown:

MNG18-4 FB/SK: M (3M Identity) + NG (Barrel Style: Nylon w/ Grip) + 18 (Wire Range: 22-18 AWG) + - + 4 (Stud Size: #4) + FB (Tongue Code: Fork, Block) + /S (Packaging Code: Short) + K (Packaging: Bulk)

Insulator Color Coding:

• Yellow: 26-24 AWG
• Red: 22-18 AWG
• Blue: 16-14 AWG
• Yellow: 12-10 AWG
• Red: 8 AWG
• Blue: 6 AWG
• Yellow: 4 AWG

Tools:

• TH-440 Scissors Style Tool: Compact, high-quality tool for 22-10 AWG terminals. Features include anvil-type wire cutter, crimp dies for insulated/non-insulated terminals, cut-off dies for screws, and wire stripping stations.
• TH-450 Scissors Style Tool: Versatile heavy-duty tool for 26-6 AWG terminals. Features include anvil-type wire cutter, crimp dies for insulated/non-insulated terminals, cut-off dies for screws, wire stripping stations, and strip length guide.
• TR-482 Ratchet Tool: Crimps barrel and insulation grip simultaneously on 22-10 AWG insulated terminals/connectors. Features color-coded dies, spring-loaded locator, conductor stop, and positive closure ratchet mechanism.
• TR-490 Ratchet Tool: Crimps barrel and insulation grip independently on 22-10 AWG insulated and non-insulated terminals/connectors. Features color-coded dies for insulated (red for 22-18, blue for 16-14, yellow for 12-10 AWG) and non-insulated terminals, ratchet mechanism, and pawl release lever.

Terminal Stud Size Chart:

American Wire Gauge (AWG) to Millimeter Conversion: