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RS PRO Insulated Ring Terminal E245391, 5.3 mm Stud Size, 16–14 AWG, Blue, Nylon, 178-8639

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RS PRO Insulated Ring Terminal E245391, 5.3 mm Stud Size, 16 - 14 AWG, Blue, Nylon, 178-8639

Name: RS PRO Insulated Ring Terminal E245391, 5.3 mm Stud Size, 16 - 14 AWG, Blue, Nylon, 178-8639
Brand: RS PRO
SKU: 81945
Price: 0.08 USD
Availability: InStock

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Category Wire Terminal Brand RS PRO Condition New

Specifications

Country of Origin	Taiwan
Brand	RS PRO
Colour	Blue
THICKNESS	0.8mm
Model	178-8639
Insulation	Insulated
Overall Length	22.8mm
Contact Material	Copper
Series	E245391
Maximum Operating Temperature	105°C
Insulation Material	Nylon
Minimum Operating Temperature	-40°C
Contact Plating	Tin
Minimum Wire Size mm²	1.5mm²
Maximum Wire Size mm²	2.5mm²
Minimum Wire Size AWG	16AWG
Maximum Wire Size AWG	14AWG
Outer Ring Diameter	8.5mm
Inner Ring Diameter	5.3mm
Stud Size	5.3 mm

Key Features

Provides secure connection for 16 to 14 AWG wires with a 5.3 mm stud interface.
Constructed with high-quality copper contact material for excellent conductivity.
Nylon insulation enhances electrical safety and offers robust mechanical protection.
Blue coloration allows for easy identification in multi-terminal setups.
Operates efficiently within a temperature range of -40°C to 105°C.
Suitable for terminating wires up to 2.5 mm² with a stud size of 5.3 mm.
Corrosion-resistant tin plating ensures durable performance in harsh environments.
Complies with demanding industry requirements for electrical connectors.

Product Description

RS PRO 178-8639 is an insulated ring terminal from the E245391 Series featuring a 5.3 mm stud size suited to wire sizes in the range of 16 AWG to 14 AWG. Its blue nylon insulation is engineered for secure and reliable wire termination, making it a dependable component for industrial, commercial, and laboratory electrical installations.

Designed for easy crimping and stable connection, this ring terminal utilizes high-quality copper as the contact material for optimal conductivity. Tin plating provides enhanced corrosion resistance and longevity, especially important for connections exposed to moisture, vibration, or chemicals. The 8.5 mm outer ring diameter ensures compatibility with a wide range of terminal blocks and studs, while the 0.8 mm thickness and 22.8 mm overall length make it suitable for compact installations.

Nylon insulation delivers excellent mechanical protection, electrical isolation, and high temperature tolerance for both indoor and outdoor projects. The blue color makes identification straightforward during maintenance or wiring in complex panels. It is ideal for applications in control panels, automotive wiring, machinery, HVAC setups, and power distribution boards seeking robust and compliant wire terminals.

Engineered to support wire sizes up to 2.5 mm², and operate reliably from -40°C up to 105°C ambient temperature, RS PRO ring terminals meet industry requirements for both safety and performance. The E245391 Series is trusted for its consistent quality, recognized across manufacturing, electrical service, laboratory, and construction environments.

Electrical and electronics professionals select RS PRO products for their blend of industrial-grade durability and versatile applications in commercial, laboratory, and manufacturing contexts. Explore more wire terminals and electrical connection solutions by browsing RS PRO and Wire Terminal categories at EnvMart.