electrical connectors 3M M14-516R/SK Scotchlok terminals with UL Listed and CSA Certified performance

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. Known for their effective and reliable performance, 3M products are 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, including positive and easy wire insertion, elimination of strand hang-ups and wire twisting, and easy insulation entry, all contributing to making the installer's job easier.

• Brand: 3M
• Product Line: 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: One-piece burr-free construction, electrical bright-tin plating, annealing for stress relief, minimized barrel-to-pad flexing, open-end design for visual inspection, multiple "V" grooves for wire grip, high-quality injection-molded insulation, funnel barrel construction, crimp ridge, non-slip ridge, beveled leading edge for insulation entry.

Key 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, 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.

Terminal Construction Highlights:

• One-piece, burr-free construction: Maximizes electrical conductivity.
• Electrical bright-tin plating: Provides maximum corrosion resistance.
• Annealing: Relieves stress points and assures maximum installed strength.
• Injection molded insulations: High-quality, 221F (105C) rated, tough, resistant electrical grade materials.
• Funnel barrel construction: Ensures positive, easy wire insertion without strand hang-ups, eliminating the need for wire twisting.
• Insulation Grip (Nylon Insulated): Features a brass sleeve for optimum grip on insulation, strain relief, and vibration protection, with a recessed sleeve for excellent flash-over protection.

Barrel Styles:

• Non-Insulated Butted Seam: Economical, used where special performance or installation characteristics are not needed.
• Non-Insulated Brazed Seam: Silver brazed seam prevents strands from escaping during or after crimping.
• Vinyl Insulated Brazed and Butted Seams: Features a flared, rigid molded polyvinyl chloride sleeve for easy wire entry and stress relief.
• Nylon Insulated Butted Seam with Insulation Grip: Features a flared, seamless brass sleeve and molded nylon sleeve for enhanced grip and strain relief.

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 in 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.

Standard Crimp Terminal and Connector Specifications:

• Materials: Burr-free, annealed, bright-tin plated ETP copper. Brazed seams where specified. Tin-plated brass insulation grip sleeves. Molded polyvinyl chloride or nylon insulators (UL/CSA certified for 600V building wire, 1000V signs/fixtures). Extruded polyvinyl chloride or nylon insulators with 221F (105C) rating.
• Construction: Funnel entry construction to prevent strand hang-up. Crimp ridge for proper tool location. Multiple "V" grooves for maximum conductor retention.

3M Terminal Numbering System:

A systematic code indicating Identity Code/Barrel Style, Wire Size Code (AWG), Tongue Code, and Product Availability.

Example Product Number Breakdown:

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

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

3M Tools:

• TH-440 Scissors: Compact, heat-treated carbon steel tool for 22-10 AWG terminals. Features anvil-type wire cutter, crimp dies, cut-off dies, and wire stripping stations.
• TH-450 Scissors: Heavy-duty, heat-treated carbon steel tool for 26-6 AWG terminals. Features anvil-type wire cutter, multiple crimp dies for insulated and non-insulated terminals, cut-off dies, and wire stripping stations.
• TR-482 Ratchet Tool: Crimps barrel and insulation grip simultaneously on 22-10 AWG insulated terminals. Features color-coded dies, spring-loaded locator, conductor stop, and positive closure ratchet. Field re-calibration possible.
• TR-490 Ratchet Tool: Crimps barrel and insulation grip independently on 22-10 AWG insulated and non-insulated terminals. Features color-coded dies for insulated and non-insulated applications, ratchet mechanism, and field re-calibration.

3M Terminal Stud Size Chart:

Provides a comprehensive list of stud sizes in both inches and millimeters, along with corresponding hole diameters.

3M Highland Bagged Terminals:

Offered in low-quantity, reclosable bags for general applications and smaller jobs. Available in various types including Rings, Standard Forks, Block Forks, Locking Forks, Butt Splices, and Female Disconnects, with both non-insulated and insulated options.

3M Scotchlok Terminal Kits:

• STK-1 (Filled): Contains a variety of popular low voltage termination products, including terminals, a crimping tool, tape dispenser, and cable ties. Housed in a durable metal box.
• Steel Terminal Box (Empty): Metal case with plastic insert tray for organizing terminals and tools.
• Plastic Terminal Box (Empty): Plastic organizing box with multiple compartments for terminals.