High reliability 3M MV14-38RX-BOTTLE terminals designed to prevent strand hang ups and wire twisting

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 installer's job easier.

• Brand: 3M Scotchlok
• Certifications: UL Listed and CSA Certified (where appropriate)
• Temperature Resistance: Non-insulated terminals up to 347F (175C); Insulated terminals up to 221F (105C)

Key Features & Benefits:

• Insulation Grip: Provides a "second" crimp on wire insulation for additional strain relief, excellent 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 with electrical bright-tin plating for corrosion resistance. Annealing relieves stress points for maximum installed strength.
• Barrel-to-Pad Transition: Minimizes flexing and bending.
• Open-end Design: Allows visual inspection of wire location before and after crimping.
• Maximum Wire Hold: Achieved through multiple "V" grooves on parts for excellent holding power.
• High-Quality Injection Molded Insulations: Made from durable, temperature-resistant electrical grade materials (221F/105C rated).
• Crimp Ridge: Ensures positive tool location on the terminal barrel for fewer miscrimps.
• Non-slip Ridge: Aids in tool positioning for proper crimping and better workmanship.
• Beveled Leading Edge: Facilitates easy wire insulation entry.

Glossary of Terms:

• Adapters: To interconnect two connectors already attached to wires.
• Block Fork: Same strength as a fork, but designed for terminal blocks with flat sides against the barrier.
• Butt Connectors: Feature chamfered barrel ends for fast wire insertion and a built-in wire stop. Must be crimped at both ends.
• Closed-End Connectors: Used for pigtailing two or more wires.
• Fork Terminals: Allow rapid wire connection, typically used on free-standing studs.
• Locking Forks: Feature a spring-like tongue that locks onto the stud, even if the mounting screw is loose.
• Ring Tongues: The safest and most reliable tongue style, requiring screw removal for disconnection.
• Heat Shrink Terminals: Offer excellent moisture protection and corrosion resistance with adhesive-lined heat shrink tubing.
• High Temperature Terminals: Constructed of steel with nickel plating, rated for continuous use at 900F (482C).

3M Terminal Numbering System:

The numbering system allows for identification of identity code, barrel style, wire size, tongue code, and product availability.

Example:

Catalog Number: MNG18-4FB/SK

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

Insulator Color Coding:

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

Frequently Asked Questions:

• Insulation Grip Function: Provides additional wire strain relief via a "second" crimp on insulation, 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; fully insulated disconnects are insulated from barrel to receptacle/tab.

Tools:

• TH-440 Scissors: Compact, high-quality tool for 6 electrical wiring functions (22-10 AWG). Features anvil-type wire cutter, crimp dies for insulated/non-insulated terminals, cut-off dies for screws, and wire stripping stations.
• TH-450 Scissors: Versatile heavy-duty tool (26-6 AWG). Features anvil-type wire cutter, multiple crimp dies for various terminal types, cut-off dies for screws, and wire stripping stations.
• TR-482 Ratchet Tool: Crimps barrel and insulation grip simultaneously (22-10 AWG insulated terminals/connectors). Features color-coded dies, spring-loaded 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 (22-10 AWG insulated and non-insulated terminals/connectors). Features color-coded dies for insulated and non-insulated terminals, ratchet mechanism for positive closure, and pawl release lever. UL Listed and CSA Certified with 3M terminals.

Terminal Stud Size Chart:

Provides conversions between US inch and metric stud sizes and their corresponding hole diameters.

American Wire Gauge (AWG) Chart:

Lists AWG sizes with corresponding inch and millimeter diameters.

Kits:

• STK-1 (Filled Scotchlok Terminal Kit): Contains popular low voltage termination products, including terminals, crimping tool, 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 for organizing terminals and tools.
• Scotchlok Plastic Terminal Box (Empty): Plastic organizing box with multiple compartments for terminals.

Technical Specifications (Selected Examples):