Versatile 3M M14-10RK Scotchlok terminals suitable for assembly and maintenance of electrical systems

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. Our products are recognized for their effective and reliable performance, UL Listed and CSA Certified where appropriate. They offer a variety of types, sizes, and materials to meet a broad application range, including demanding temperature and weather conditions. Design features ensure easy installation with positive and easy wire insertion, elimination of strand hang-ups and wire twisting, and easy insulation entry, making the installers job easier.

Key Features & Benefits:

• Effective and Reliable Performance: UL Listed and CSA Certified where applicable.
• Versatile Application Range: Variety of types, sizes, and materials to meet diverse needs.
• Easy Installation: Features like funnel barrel construction, easy wire insertion, and elimination of strand hang-ups.
• Durability: Options for high temperature and challenging environments.
• Strain Relief: Insulation grip provides additional wire strain relief, excellent for high vibration applications.

Product Categories:

• Ring Tongues
• Multi-Stud Ring Tongues
• Standard Forks
• Block Forks
• Flanged Block Forks
• Locking Forks
• Butt Connectors
• Female Disconnects
• Male Disconnects
• Flags
• Multi-Stack Disconnects
• Adapters
• High Temperature Terminals
• Closed End Connectors
• Parallel Connectors
• Pin Terminals
• Kits
• Tools

Frequently Asked Questions:

• Insulation Grip: Provides a second crimp on wire insulation for additional strain relief, ideal for high vibration applications.
• Tool Compatibility: Refer to pages 143-144 for a variety of compatible tools.
• Insulated vs. Fully Insulated Disconnects: Insulated disconnects have barrel insulation only, while fully insulated disconnects are insulated from barrel to receptacle/tab.
• Temperature Resistance: Non-insulated terminals withstand up to 347F (175C); Insulated terminals withstand up to 221F (105C).

Glossary of Terms:

• Adapters: To interconnect two connectors already attached to wires.
• Block Fork: Same strength as a standard fork, but designed for terminal blocks with flat sides against the barrier.
• Butt Connector: Features chamfered barrel ends for fast wire insertion from both ends and a built-in wire stop. Must be crimped at both ends.
• Closed-End Connector: Used for pigtailing two or more wires.
• Fork: Allows rapid wire connection, typically used on free-standing studs due to wider tongues.
• Locking Fork: Spring-like tongue locks onto the stud, even if the mounting screw is loose.
• Parallel Connector: Similar to a butt connector but with overlapped wires and a single center crimp, used where space is limited.
• Pin Terminal: For installation in compression blocks, commonly used in Europe for terminating stranded wire.
• Quick Connect (Disconnect): Attached by the female parts tongue slipping over the male tab, providing excellent holding force and easy disconnection.
• Ring Tongue: Standard tongue style, offering the safest and most reliable connection.
• Tap: Requires no wire stripping; lay wire in connector and crimp.

Standard Terminal Construction Features:

• One-piece, burr-free construction: Maximizes electrical conductivity. Electrical bright-tin plating provides corrosion resistance. Annealing relieves stress points for maximum installed strength.
• Barrel-to-pad transition design: Minimizes flexing and bending.
• Open-end design: Allows visual inspection of wire location before and after crimping.
• Maximum wire hold: Multiple V grooves (on #264 AWG parts) ensure excellent holding power.
• Injection molded insulations: High-quality, 221F (105C) rated, electrical grade materials. Consistent wall thickness for reliability, funnel barrel construction for easier installation, and molded crimp/non-slip ridges.
• Crimp ridge: Ensures positive tool location on the terminal barrel, reducing miscrimps.
• Funnel barrel construction: Facilitates positive, easy wire insertion without strand hang-ups; wire twisting is not necessary.
• Nylon-insulated terminals with grip: Feature a brass sleeve for optimum insulation grip, strain relief, and vibration protection. Recessed brass sleeve provides excellent flash-over protection.
• Non-slip ridge: Aids tool positioning for a proper crimp and better workmanship.
• Beveled leading edge: For easy wire insulation entry.

Barrel Styles:

• Non-Insulated Butted Seam: Economical, used where special performance or installation characteristics are not required. Beveled mouth facilitates wire insertion. Max. temp: 347F (175C).
• Non-Insulated Brazed Seam: Beveled mouth facilitates wire insertion. Can be crimped anywhere on the barrel. Silver brazed seam prevents opening under crimping pressure or stress. Stranded wire cannot escape barrel confines. Max. temp: 347F (175C).
• Vinyl Insulated (Brazed and Butted Seams): For applications requiring insulation. Features a flared, rigid molded polyvinyl chloride sleeve, securely attached and funneled for easy wire entry. Wire insulation positions against the funnel, preventing strand hang-up. Crimping barrel and flared sleeve provide excellent electrical contact and mechanical stress relief. Insulation has a non-slip ridge for tool positioning. Industry standard color coding indicates wire range. Insulators rated for -40F to 221F (-40C to 105C). UL Listed and CSA Certified for 600V building wire and 1000V signs/lighting fixtures.
• Nylon Insulated Butted Seam with Insulation Grip: For applications requiring insulation and positive insulation grip. Features a flared, seamless brass sleeve covered by a flared, molded nylon sleeve. Wire insulation positions against the funnel of the brass sleeve. Crimping barrel and flared sleeve provide excellent electrical contact and mechanical stress relief. Crimp tool positioning is nearly mistake-proof due to a step in the nylon insulation. Industry standard color coding indicates wire range. Insulators rated for -40F to 221F (-40C to 105C). UL Listed and CSA Certified for 600V building wire and 1000V signs/lighting fixtures.

Heat Shrink Terminals, Connectors and Disconnects:

3M Heat Shrink products offer superior moisture protection and corrosion resistance in challenging environments. The adhesive-lined heat shrink material, when properly crimped and shrunk, seals against water, salt, steam, and other contaminants. They provide improved pullout strength and strain relief due to the adhesive lining bonding to both the connector and wire insulation. The durable heat shrink tubing resists abrasion, scoring, cut-through, and aging. Available in wire sizes 2210 AWG, they are color-coded for wire range identification and feature transparent tubing for visual inspection.

High Temperature Terminals and Connectors:

Constructed of steel with nickel plating, these terminals and connectors are rated for continuous use at 900F (482C), making them ideal for ovens, motors, light fixtures, and other high-temperature applications. No applicable UL or CSA standard exists for these high-temperature steel parts.

Standard Crimp Terminal and Connector Specifications:

• Materials: Burr-free, annealed, bright-tin plated ETP copper. Barrels are 0.25" long with brazed seams where specified. Insulation grip sleeves are tin-plated brass, securely attached. Insulators are molded polyvinyl chloride or nylon, UL Listed and CSA Certified for 600V building wire and 1000V signs/lighting fixtures. Connector insulators are extruded polyvinyl chloride or nylon, rated at 221F (105C).
• Construction: All insulated terminals feature funnel entry construction to prevent strand hang-up and a crimp ridge for proper tool location. Nylon insulated terminals and connectors have butted seam barrels with insulation grip sleeves. All terminal barrels have multiple V grooves for maximum conductor retention.

3M Terminal Numbering System:

The numbering system identifies product type, barrel style, wire size, tongue type, and product availability. Refer to the provided chart for detailed breakdown.

Example Product Number Breakdown:

MNG18-4 FB/SK:

• M: 3M Identity
• NG: Barrel Style (Nylon w/ Grip)
• 18: Wire Range (2218 AWG)
• 4: Stud/Bullet or Tab Size (4 Stud)
• FB: Tongue Code (Fork, Block)
• /S: Packaging Code (Short)
• K: Packaging Availability (Bulk)

Insulator Color Coding:

• Yellow: 2624 AWG
• Red: 2218 AWG
• Blue: 1614 AWG
• Yellow: 1210 AWG
• Red: 8 AWG
• Blue: 6 AWG
• Yellow: 4 AWG

Product Data Tables:

Detailed specifications including Product Number, UPC, Wire Range, Stud Size, Dimensions (W, C, L, E, Thickness), Barrel Length, Barrel I.D., and Terminals per Carton/Case are provided for each product type (e.g., Ring Tongues, Forks, Disconnects, etc.).

Tools:

• TH-440 Scissors: Compact, high-quality tool for 6 electrical wiring functions. Features heat-treated carbon steel, crimp dies for 2210 AWG insulated/non-insulated terminals, wire cutters, screw cut-off dies, and wire stripping stations.
• TH-450 Scissors: Versatile heavy-duty tool made of high-strength, heat-treated carbon steel. Handles 266 AWG wire. Features multiple crimp dies for various terminal types, wire cutters, screw cut-off dies, and wire stripping stations.
• TR-482 Ratchet Tool: Crimps barrel and insulation grip simultaneously on 2210 AWG insulated terminals. Features color-coded dies, field re-calibration, terminal locator, conductor stop, and positive closure ratchet. UL Listed and CSA Certified with 3M terminals.
• TR-490 Ratchet Tool: Crimps barrel and insulation grip independently on 2210 AWG insulated and non-insulated terminals. Features color-coded dies for insulated and non-insulated applications, ratchet mechanism for positive closure, and field re-calibration. UL Listed and CSA Certified with 3M terminals.

Terminal Stud Size Chart:

Provides a comprehensive list of stud sizes in both inches and millimeters, corresponding to their respective hole diameters.

American Wire Gauge (AWG) Chart:

Lists wire sizes from 4/0 down to 26 AWG with corresponding millimeters.

Kits:

• STK-1 (Filled Scotchlok Terminal Kit): Contains frequently purchased low voltage termination products, including terminals, a crimping tool (TH-440), tape dispenser, and cable ties. Housed in a durable metal box with organized compartments.
• Scotchlok Steel Terminal Box (Empty): Metal case with plastic insert tray, divided into 14 terminal compartments, one tool compartment, and two miscellaneous compartments.
• Scotchlok Plastic Terminal Box (Empty): Plastic organizing box divided into 13 compartments, including one for a crimping tool.