Durable 3M MNG18-187DFIK terminals engineered for high vibration applications and wire insulation grip

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 rely on our products for their effective and reliable performance, UL Listed and CSA Certified (where appropriate) status, and a wide variety of types, sizes, and materials that meet broad application ranges, 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, all contributing to making the installers job easier.

• Brand: 3M Scotchlok
• Certifications: UL Listed and CSA Certified where appropriate.
• Key Features: Easy installation, effective and reliable performance, variety of types/sizes/materials, resistance to temperature and weather.

Product Categories:

• Terminals
• Kits
• Tools

Frequently Asked Questions:

• Insulation Grip: Provides a second crimp on wire insulation for additional strain relief, excellent 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 the barrel to the receptacle/tab.
• Temperature Resistance: Non-insulated terminals withstand up to 347F (175C); insulated terminals withstand up to 221F (105C).

Standard Terminal Construction Features:

• One-piece, burr-free construction for maximum electrical conductivity; electrical bright-tin plating for corrosion resistance; annealing to relieve stress points.
• Barrel-to-pad transition design minimizes flexing and bending.
• Open-end design allows visual inspection of wire location before and after crimping.
• Multiple V grooves for maximum hold on wire (for #264 AWG parts).
• Injection-molded insulations (vinyl or nylon) rated at 221F (105C), offering consistent wall thickness, funnel barrel construction, and crimp/non-slip ridges.
• Crimp ridge for positive tool location.
• Funnel barrel construction for easy wire insertion without strand hang-ups.
• Nylon-insulated terminals with grip feature a brass sleeve for optimum grip, strain relief, and vibration protection.
• Non-slip ridge for proper tool positioning.
• Beveled leading edge for easy wire insulation entry.

Barrel Styles:

• Non-Insulated: Butted Seam (economical, beveled mouth) and Brazed Seam (silver brazed seam, prevents wire escape). Max temperature: 347F (175C).
• Vinyl Insulated: Brazed and Butted Seams (polyvinyl chloride sleeve, funneled entry, non-slip ridge). Rated for -40F to 221F (-40C to 105C). UL Listed and CSA Certified for 600V building wire and 1000V signs/lighting fixtures.
• Nylon Insulated with Insulation Grip: Butted Seam barrels with seamless brass sleeve and molded nylon sleeve. Industry standard color coding. 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:

Offer superior moisture protection and corrosion resistance with adhesive-lined heat shrink material. Provide improved mechanical performance with enhanced pullout strength and strain relief. Durable heat shrink tubing resists abrasion and aging. Available for wire sizes 2210 AWG.

High Temperature Terminals and Connectors:

Constructed of steel with nickel plating. Rated for continuous use at 900F (482C). Ideal for ovens, motors, and light fixtures. No applicable UL or CSA standard for these parts.

3M Terminal Numbering System:

Identity Code/Barrel Style, Wire Size Code (AWG), Tongue Code, Product Availability.

Example Product Number:

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

Terminal Stud Size Chart:

Provides conversions between US inch and metric stud sizes.

American Wire Gauge (AWG) Chart:

Lists AWG sizes from 4/0 down to 26.

Tools:

• TH-440: Compact, high-quality tool for 2210 AWG terminals. Features: anvil-type wire cutter, crimp dies (insulated/non-insulated), cut-off dies, wire stripping stations, ignition part crimp die.
• TH-450: Versatile heavy-duty tool for 266 AWG terminals. Features: anvil-type wire cutter, crimp dies (various ranges), cut-off dies, wire stripping stations, strip length guide.
• TR-482: Ratchet tool for 2210 AWG insulated terminals. Crimps barrel and insulation grip simultaneously. Field re-calibration.
• TR-490: Ratchet tool for 2210 AWG insulated and non-insulated terminals. Independent crimping of barrel and insulation grip. Field re-calibration.

Kits:

• STK-1 (Filled): Contains popular low voltage termination products, crimping tool, tape dispenser, and cable ties. Durable metal box with organized compartments.
• Scotchlok Steel Terminal Box (Empty): Metal case with plastic insert tray for organizing terminals.
• Scotchlok Plastic Terminal Box (Empty): Plastic organizing box for terminals.

Glossary of Terms:

Definitions for various terminal types including Ring Tongues, Standard Forks, Block Forks, Locking Forks, Butt Connectors, Disconnects, Flags, Adapters, High Temperature, Closed End Connectors, Parallel Connectors, and Pin Terminals.