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Thomas & Betts Insulated Nylon Ring Terminal 22-16 AWG #8 Stud Red
Model: TB-RA18-8
Thomas & Betts Insulated Nylon Ring Terminal 22-16 AWG #8 Stud RedProfessional Electrical Connection Solution with High Dielectric StrengthThomas & Betts delivers reliable electrical connections with...
Thomas & Betts
$52.22
$3.91
Thomas & Betts Insulated Spade Terminal 22-16 AWG #6 Stud Red Nylon
Professional Insulated Terminal Connection Solution
Thomas & Betts delivers reliable electrical connections with this insulated spade terminal designed for 22-16 AWG wire range and #6 stud applications. Featuring copper construction with electro tin-plated finish and red nylon insulation, this terminal provides secure connections rated for 600V and 105�C operation with UL and CSA certifications.
Professional Features & Benefits
- 22-16 AWG Wire Range: Accommodates standard wire gauges for versatile electrical connection applications
- 600V Voltage Rating: Supports high-voltage applications with reliable insulation protection
- 105�C Temperature Rating: Maintains performance in elevated temperature environments
- Copper with Electro Tin-Plated Finish: Provides excellent conductivity and corrosion resistance for long-term reliability
- Red Nylon Insulation: Color-coded identification with UL 94 V-2 flammability rating for safety
- Inner Bronze Insulation Grip Sleeve: Lengthens flex radius of conductor and eliminates conductor creep
- UL and CSA Certifications: Meets rigorous safety and performance standards for professional installations
Technical Specifications
- A Inches: 0.83
- Alternate Package Qty: RA1103
- Application Tools: WT145C, WT2000, WT112M, ERG4001, ERG4003, WT145A
- B Inches: 0.25
- C Inches: 0.25
- Color: Red
- Department: Electrical
- Flammability Rating: UL 94 V-2
- Inner Package: 100
- Insulation Type: Insulated Nylon
- M Inches: 0.71
- Material: Copper
- Maximum Insulation Inches: 0.136
- Order Multiple: 100
- Outer Package: 500
- Package Height: 9
- Package Length: 15
- Package Type: Standard
- Package Width: 9.5
- Product Finish: Electro Tin-Plated
- Product Group: Terminals
- Product Subgroup: Insulated Terminals
- Recommended Tool: ERG4001
- Rohs Compliance: Yes
- Stock Thickness: 0.03
- Stud Size: #6
- T B Sold In Uom: Each
- T B Weight Per Uom: 2.5 lbs. per 1000
- Temperature Rating: 105�C
- Terminal Series: RA
- Voltage Rating: 600V
- Wire Range: 22-16
Professional Applications
- Electrical Panel Connections
- Control Circuit Wiring
- Industrial Equipment Terminations
- Commercial Electrical Systems
- Maintenance and Repair Operations
- Professional Electrical Installations
Why Choose Thomas & Betts Quality?
Thomas & Betts insulated spade terminals deliver professional-grade reliability with UL and CSA certifications, RoHS compliance, and proven RA series design. The combination of copper construction, electro tin-plated finish, and nylon insulation ensures dependable performance in demanding electrical applications.
Manufacturer Resources
Product Specs
- A Inches:
- 0.83
- Alternate Package Qty:
- RA1103
- Application Tools:
- WT145C, WT2000, WT112M, ERG4001, ERG4003, WT145A
- B Inches:
- 0.25
- C Inches:
- 0.25
- Flammability Rating:
- UL 94 V-2
- Inner Package:
- 100
- Insulation Type:
- Insulated Nylon
- M Inches:
- 0.71
- Maximum Insulation Inches:
- 0.136
- Order Multiple:
- 100
- Outer Package:
- 500
- Package Height:
- 9
- Package Length:
- 15
- Package Type:
- Standard
- Package Width:
- 9.5
- Product Group:
- Wire Connectors & Terminals
- Recommended Tool:
- ERG4001
- Rohs Compliance:
- Yes
- Stock Thickness:
- 0.03
- Stud Size:
- #6
- T B Sold In Uom:
- Each
- T B Weight Per Uom:
- 2.5 lbs. per 1000
- Temperature Rating:
- 105°C
- Terminal Series:
- RA
- Voltage Rating:
- 600V
- Wire Size:
- 22-16
- Department:
- Electrical
- Product Subgroup:
- Lugs & Terminals
- Product Finish:
- Electro Tin-Plated
- Product Color:
- Red
- Product Material:
- Copper
- Product Type:
- Fork Terminal
Thomas & Betts RA18-6F – Frequently Asked Questions
1) Will the Thomas & Betts RA18-6F spade terminal work on 18 AWG control wire?
Yes. The RA18-6F covers a 22-16 AWG wire range, so 18 AWG sits in the middle of the barrel's range. Red insulation is the standard color code for that gauge band. Maximum insulation diameter it will accept is 0.136 inch, so heavily jacketed wire may need the jacket trimmed back further than usual.
2) What screw or stud size does the RA18-6F fork terminal fit?
It is sized for a #6 stud. The fork slides under a #6 terminal screw without removing it, which is why electricians use spade terminals on panel and control terminal blocks instead of ring tongues. If your terminal block uses #8 or #10 screws, this one is the wrong size.
3) What crimp tool do I need for Thomas & Betts RA series insulated terminals?
ERG4001 is the recommended tool. T&B also lists WT145C, WT2000, WT112M, ERG4003 and WT145A as application tools for this terminal. Any of those will set the barrel and the inner insulation grip correctly; a generic non-insulated crimp die can crush the nylon.
4) Is this spade terminal rated for 600V control panel wiring?
Yes, 600V with a 105 degree C temperature rating, so it handles standard control and power circuits in panels and industrial equipment. The nylon insulation carries a UL 94 V-2 flammability rating, and the part is RoHS compliant.
5) How many RA18-6F terminals come in a pack and is there an order minimum?
They're counted individually but sold in multiples of 100. Inner package is 100 pieces, outer carton is 500. For reference on freight, the terminals run about 2.5 lbs per 1000.
6) Will the fork fit in a tight terminal block with limited space?
Dimensions on the RA18-6F are A 0.83, M 0.71, B 0.25 and C 0.25 inches, with 0.03 inch stock thickness. The 0.25 inch tongue width is what matters for crowded blocks, and the thin stock lets it seat under a screw head without lifting adjacent conductors.
7) How does a nylon-insulated fork terminal differ from a vinyl-insulated one?
The T&B RA18-6F uses nylon insulation, which holds up better at elevated temperature and against abrasion than vinyl. A vinyl-insulated alternative we carry is the 3M Highland vinyl-insulated block fork terminal. Choose vinyl for general low-heat work, nylon where the terminal sees heat or gets pulled through conduit and raceway.
8) Can I use a 3M Highland vinyl-insulated fork terminal in place of a Thomas & Betts RA18-6F?
Only if the opening and the spec allow a vinyl-insulated terminal. Both are fork (spade) terminals, so the slotted tongue slides under a loosened screw the same way. What differs is that the RA18-6F carries a specific set of published ratings - 600V, 105 degrees C, UL 94 V-2 flammability, RoHS compliant, nylon insulation on a tin-plated copper barrel - and it is sized for 22-16 AWG wire on a #6 stud. Match the Highland part's wire range and stud size to your conductor before swapping, and if your job is written to a temperature or flammability rating, verify the vinyl part carries it.
9) Which insulated fork terminal should I pick for a control panel where terminals sit close together on a crowded strip?
Look at the body style. The 3M Highland is a block fork terminal, meaning a squared-off tongue profile, while the Thomas & Betts RA18-6F is a standard RA-series spade with a 0.83 inch overall length, 0.25 inch tongue width dimensions and a 0.03 inch stock thickness. On a tight strip, measure the available screw pitch against those figures before committing. The RA18-6F also has an inner bronze insulation grip sleeve that lengthens the flex radius of the conductor, which helps where wires are bent sharply into a dense panel.
10) Will my existing crimp tool work on both the Thomas & Betts RA18-6F and a 3M Highland fork terminal?
Do not assume so. Thomas & Betts lists specific application tools for the RA18-6F - WT145C, WT2000, WT112M, ERG4001, ERG4003 and WT145A - with ERG4001 as the recommended tool. A nylon-insulated barrel like the RA18-6F's is crimped differently from a vinyl-insulated one such as the 3M Highland, and insulated-terminal dies are usually color-coded to the wire range. If you are standardizing a truck or a shop on one tool, standardizing on one terminal family alongside it saves you a second set of dies.
11) Is this terminal okay in a damp or corrosive environment?
The barrel and tongue are copper with an electro tin-plated finish, which resists corrosion and keeps contact resistance low over time. The nylon insulation is tougher than vinyl against abrasion and heat. It is not a sealed or heat-shrink terminal, so direct water exposure still calls for an adhesive-lined sealed type.
12) What should I use instead of the RA18-6F if my stud is larger than #6 or my wire is heavier than 16 AWG?
The RA18-6F is built to one combination: 22-16 AWG wire on a #6 stud, with a maximum insulation diameter of 0.136 inch. Step outside either of those and you need a different part, not a different brand - move up within the Thomas & Betts RA series to the fork terminal sized for your stud and gauge. Forcing a heavier conductor into a 22-16 barrel gives you a crimp that will not hold, and a #6 tongue will not seat properly under a larger screw head.
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Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Thomas & Betts RA18-6F come with a warranty?
Absolutely. The Thomas & Betts RA18-6F is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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