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 known for their effective and reliable performance, UL Listed and CSA Certified where appropriate. We 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 installers job easier.

• Brand: 3M Scotchlok
• Certifications: UL Listed and CSA Certified where appropriate.
• Key Features: Effective and reliable performance, variety of types/sizes/materials, easy installation features (funnel barrel, insulation grip).
• Applications: Assembly and maintenance of electrical systems.

Technical Specifications

Terminal Construction Features:

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

Barrel Styles:

• Non-Insulated: Butted Seam (economical, beveled mouth), Brazed Seam (silver brazed seam, stranded wire cannot escape). Max temperature: 347F (175C).
• Vinyl Insulated: Brazed and Butted Seams. Flared, rigid molded polyvinyl chloride sleeve, funneled for easy wire entry. Non-slip ridge for tool positioning. Temperature range: -40F to 221F (-40C to 105C). UL/CSA Certified for 600V building wire and 1000V signs/lighting fixtures.
• Nylon Insulated with Insulation Grip: Butted Seam barrels with seamless brass sleeve. Flared, molded nylon sleeve. Industry standard color coding for wire range. Temperature range: -40F to 221F (-40C to 105C). UL/CSA Certified for 600V building wire and 1000V signs/lighting fixtures.

Heat Shrink Terminals, Connectors, and Disconnects: Offer moisture protection, corrosion resistance, improved mechanical performance, and durable heat shrink tubing. Available in wire sizes 2210 AWG.

High Temperature Terminals and Connectors: Constructed of steel with nickel plating. Rated for continuous use at 900F (482C). No applicable UL or CSA standard.

Terminal Stud Size Chart: Provides dimensions for various stud sizes in inches and millimeters.

American Wire Gauge (AWG) Chart: Lists wire gauge sizes and corresponding diameters in inches and millimeters.

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 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 fork, designed for terminal blocks with flat sides.
• Bullet Style: Reliable in-line connection with holding friction when joined, typically for automotive use.
• Butt Connectors: Chamfered barrel ends for fast wire insertion, built-in wire stop. Must be crimped at both ends.
• Closed-End Connectors: Used for pigtailing two or more wires.
• Flanged Fork: Combines benefits of block and locking forks, stays secure if screw loosens.
• Fork: Allows rapid wire connection, wider tongues for free-standing studs.
• Locking Fork: Spring-like tongue locks onto stud, even without screw tightening.
• Parallel Connectors: Similar to butt connectors with overlapped wires and a single center crimp, used where space is limited.
• Pins: For installation in compression blocks, used in Europe for terminating stranded wire.
• Quick Connect (Disconnect): Tongue of female part slips over male tab for easy and quick disconnect.
• Ring Tongues: Standard, safest, and most reliable tongue style.
• Tabs: Use mounting hole for rivet or screw.
• Taps: No wire stripping necessary, lay wire in connector and crimp.

3M Terminal Numbering System:

Provides a breakdown of the product numbering system including Identity Code, Barrel Style, Wire Size Code, Tongue Code, and Product Availability.

Insulator Color Coding:

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

Tools:

• TH-440: Compact, high-quality tool for 2210 AWG terminals. Features anvil-type wire cutter, crimp dies, cut-off dies, wire stripping stations, and ignition part crimp die.
• TH-450: Versatile heavy-duty tool for 266 AWG terminals. Features anvil-type wire cutter, crimp dies for insulated and non-insulated terminals, cut-off dies, wire stripping stations, and strip length guide.
• TR-482: Ratchet tool for 2210 AWG insulated terminals and connectors. Crimps barrel and insulation grip simultaneously. Field recalibration possible.
• TR-490: Ratchet tool for 2210 AWG insulated and non-insulated terminals and connectors. Separate crimping for barrel and insulation grip. Field recalibration possible.

Kits:

• STK-1 (Filled): Includes crimping tool, tape dispenser, cable ties, and various 3M Highland terminals. Durable metal box with organized compartments.
• Scotchlok Steel Terminal Box (Empty): Metal case with plastic insert tray for terminal organization.
• Scotchlok Plastic Terminal Box (Empty): Plastic organizing box for terminals.