Thomas & Betts Insulated Nylon...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$52.22
$3.90
Thomas & Betts Insulated Nylon Ring Terminal 22-16 AWG #8 Stud Red

Thomas & Betts Insulated Nylon Ring Terminal 22-16 AWG #8 Stud Red

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Model: RA18-8
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$52.22
$3.90
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Thomas & Betts Insulated Nylon Ring Terminal 22-16 AWG #8 Stud Red

Professional Electrical Connection Solution with High Dielectric Strength

Thomas & Betts delivers reliable electrical connections with this insulated nylon ring terminal designed for 22-16 AWG wire range and #8 stud applications. Featuring self-insulated construction with high dielectric-strength nylon sleeves and an inner bronze insulation grip sleeve that lengthens the flexing radius of the conductor and eliminates conductor creep. The electro tin-plated copper construction with red color coding ensures professional performance in 600V applications with 105�C temperature rating.

Professional Features & Benefits

  • 22-16 AWG Wire Range: Accommodates standard wire gauges for versatile electrical connection applications
  • 600V Voltage Rating: Provides reliable performance in commercial and industrial electrical systems
  • 105�C Temperature Rating: Ensures stable operation in demanding thermal environments
  • Electro Tin-Plated Copper: Delivers superior conductivity and corrosion resistance for long-term reliability
  • High Dielectric-Strength Nylon Insulation: Provides electrical safety and prevents accidental contact
  • Bronze Insulation Grip Sleeve: Extends conductor flexing radius and eliminates conductor creep for enhanced durability
  • UL and CSA Certified: Meets rigorous safety standards for professional electrical installations

Technical Specifications

  • A Inches: 0.89
  • Alternate Package Qty: RA863
  • Application Tools: WT2000, WT112M, WT145C, ERG4001, ERG4003, WT145A
  • B Inches: 0.31
  • C Inches: 0.25
  • Color: Red
  • Department: Electrical
  • Flammability Rating: UL 94 V-2
  • Inner Package: 100
  • Insulation Type: Insulated Nylon
  • M Inches: 0.74
  • Material: Copper
  • Maximum Insulation Inches: 0.136
  • Order Multiple: 100
  • Outer Package: 500
  • Package Height: 8.9
  • Package Length: 15.1
  • Package Type: Standard
  • Package Width: 9.4
  • Product Finish: Electro Tin-Plated
  • Product Group: Hardware
  • Product Subgroup: Rings
  • Recommended Tool: WT145A
  • Rohs Compliance: Yes
  • Stock Thickness: 0.03
  • Stud Size: #8
  • T B Sold In Uom: Each
  • T B Weight Per Uom: 0.25 lbs. per 100
  • Temperature Rating: 105�C
  • Terminal Series: RA
  • Voltage Rating: 600V
  • Wire Range: 22-16

Professional Applications

  • Commercial Electrical Panels and Distribution Systems
  • Industrial Control Circuits and Motor Connections
  • Residential Service Panels and Branch Circuits
  • HVAC Equipment Electrical Connections
  • Lighting Control Systems and Fixtures
  • Emergency Power and Backup Systems

Why Choose Thomas & Betts Quality?

Thomas & Betts ring terminals deliver proven reliability with UL and CSA certifications ensuring compliance with professional electrical standards. The UL 94 V-2 flammability rating and RoHS compliance demonstrate commitment to safety and environmental responsibility, while the electro tin-plated finish provides long-term corrosion resistance for dependable electrical connections.

Manufacturer Resources

Product Specs

A Inches:
0.89
Alternate Package Qty:
RA863
Application Tools:
WT2000, WT112M, WT145C, ERG4001, ERG4003, WT145A
B Inches:
0.31
C Inches:
0.25
Flammability Rating:
UL 94 V-2
Inner Package:
100
Insulation Type:
Insulated Nylon
M Inches:
0.74
Maximum Insulation Inches:
0.136
Order Multiple:
100
Outer Package:
500
Package Height:
8.9
Package Length:
15.1
Package Type:
Standard
Package Width:
9.4
Product Group:
Wire Connectors & Terminals
Recommended Tool:
WT145A
Rohs Compliance:
Yes
Stock Thickness:
0.03
Stud Size:
#8
T B Sold In Uom:
Each
T B Weight Per Uom:
0.25 lbs. per 100
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:
Ring Terminal

Thomas & Betts RA18-8 – Frequently Asked Questions

1) What wire gauge and stud size does the Thomas & Betts RA18-8 ring terminal fit?
The RA18-8 takes 22-16 AWG conductor and lands on a #8 stud or screw. The red nylon sleeve is the standard color code for the 22-16 range, so it's easy to pick out of a bin on a panel job. If your conductor is 14-16 AWG or larger, or the stud is #10, this isn't the terminal for it.
2) What crimp tool do I need for Thomas & Betts RA series insulated ring terminals?
WT145A is the recommended tool. The RA18-8 is also listed for use with WT2000, WT112M, WT145C, ERG4001 and ERG4003. Using a non-insulated or open-barrel die on a nylon-insulated terminal splits the sleeve, so stay with an insulated-terminal tool from that list.
3) Is this ring terminal rated for 600V control and motor circuits?
Rated 600V at 105 degrees C, which covers commercial panel wiring, industrial control circuits and HVAC equipment terminations. The nylon sleeve carries a UL 94 V-2 flammability rating.
4) What ring terminal should I use for 6 AWG battery cable instead of the Thomas & Betts RA18-8?
The RA18-8 is built for 22-16 AWG wire on a #8 stud, so it will not accept a 6 AWG conductor. For 6 AWG, the Burndy YAV6CL1BOX Hylug is a one-hole ring terminal sized for 6 AWG with a #8-10 stud hole, which covers the same stud size while taking the much larger conductor.
5) Will the insulation sleeve on this ring terminal fit over wire with thick jacket insulation?
The barrel accepts conductor insulation up to 0.136 inch outside diameter. Typical THHN or appliance wire in the 22-16 AWG range falls under that, but heavy-wall or double-insulated leads may not slide in far enough for the bronze grip sleeve to seat on the jacket.
6) How many ring terminals come in a pack and can I buy just a few?
The RA18-8 is sold each but ordered in multiples of 100, with 100 to an inner pack and 500 to the outer carton. There is no small blister count, so plan on 100 minimum for an MRO shelf stock.
7) Is a ring terminal better than a fork terminal for panel and equipment landings?
A closed ring like the RA18-8 has to come off over the stud, which is exactly why it's used where vibration or a loosened screw would otherwise let the wire pop free, motor connections, HVAC equipment, control terminals. A spade or fork terminal slides out sideways under a loosened screw and is faster to service but less secure. For permanent terminations on a #8 stud, the ring is the right choice.
8) Is the Burndy YAV6CL1BOX a direct substitute for the Thomas & Betts RA18-8?
No. Both are ring terminals and both fit a #8 stud, but they serve different conductor sizes: the RA18-8 is a 22-16 AWG insulated nylon terminal in red color coding, while the YAV6CL1BOX is a Burndy Hylug series lug for 6 AWG with a #8-10 stud hole. Use the RA18-8 for small-gauge control and fixture wiring and the Hylug for heavy 6 AWG runs.
9) For low-voltage control wiring on a #8 terminal screw, which terminal do I order?
Order the Thomas & Betts RA18-8. It is rated 600V at 105 degrees C, takes 22-16 AWG conductors with insulation up to 0.136 inch, and seats on a #8 stud, which matches typical control and thermostat wiring. The Burndy YAV6CL1BOX Hylug covers the same stud range but is a 6 AWG lug, far too large to crimp onto control-gauge wire.
10) Will tin-plated copper ring terminals hold up in a damp mechanical room?
The terminal body is copper with an electro tin-plated finish, which is the normal corrosion-resistant plating for indoor commercial and industrial terminations, and the nylon sleeve covers the barrel. It is RoHS compliant. For direct outdoor or buried work you want a sealed heat-shrink terminal instead.
11) What are the physical dimensions of the RA18-8 ring terminal?
Published dimensions are A 0.89, B 0.31, C 0.25 and M 0.74 inches, with a stock thickness of 0.03 inch. The 0.74 inch M figure is the one to check against crowded terminal blocks where adjacent lugs can touch.
How fast can I get the Thomas & Betts RA18-8 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
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 RA18-8 come with a warranty?
Absolutely. The Thomas & Betts RA18-8 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Thomas & Betts RA18-8?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Thomas & Betts RA18-8 from ZenSupply?
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