Best Flag Terminals of 2026

Brian Howie Avatar
Brian Howie
Last Updated: Jan 7, 2026

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

Flag terminals are an essential electrical component used to connect wires to other devices. These small, flat connectors are designed to be easily attached to a wire end, and are commonly used in automotive, marine and industrial applications. They are available in a variety of sizes and materials to suit different wire gauges and environmental conditions. Flag terminals are typically made from materials such as copper, brass or stainless steel, and are often coated with tin or nickel to prevent corrosion. They are a cost-effective and reliable way to make secure electrical connections, and are widely used in a range of industries.

At a Glance: Our Top Picks

NSI SF12-250-3-S Uninsulated Flag Terminal Cover #TOP 1
NSI SF12-250-3-S Uninsulated Flag Terminal
ftb score rating icon 9.8
Sherco-Auto Female Flag Quick Connectors 16-14 AWG Cover #TOP 2
Sherco-Auto Female Flag Quick Connectors 16-14 AWG
ftb score rating icon 9.7
Uninsulated Flag Terminal - 16-14 Wire Size Cover #TOP 3
Uninsulated Flag Terminal - 16-14 Wire Size
ftb score rating icon 9.5

Top 10 Flag Terminals

#TOP 1

NSI SF12-250-3-S Uninsulated Flag Terminal

NSI
SF12-250-3-S
Pounds
NSI SF12-250-3-S Uninsulated Flag Terminal Cover
NSI SF12-250-3-S Uninsulated Flag Terminal, Small Packs, 12-10 Wire Size, 0.250" x 0.032" Tab Size, Ohm

The NSI SF12-250-3-S Uninsulated Flag Terminal is a small pack of UL listed terminals that are ideal for 12-10 wire sizes. With a tab size of 0.250" x 0.032", these uninsulated flag terminals are perfect for a wide range of electrical applications.

What We Like
UL listed
Comes in small packs
Perfect for 12-10 wire sizes
#TOP 2

Sherco-Auto Female Flag Quick Connectors 16-14 AWG

HT10189
Sherco-Auto Female Flag Quick Connectors 16-14 AWG Cover
Sherco-Auto 100 Pcs High Temperature Non-Insulated Female Flag Quick Connector 16-14 AWG .250 Stud Electrical Wire Terminal - Made in USA

The Sherco-Auto Flag Connectors are perfect for tight spaces, making them ideal for cars, trucks, boats, and motorcycles where space is limited. These connectors handle high temperatures up to 900°F, so you don’t have to worry about heat damage in engine bays or industrial settings. Their nickel-plated steel design resists corrosion and wear, ensuring a long-lasting, reliable connection even with frequent use. Plus, they’re easy to crimp using standard tools, saving you time and effort when wiring car stereos or building custom harnesses. These connectors offer dependable performance for your electrical projects.

What We Like
High temperature resistance
Compact design for tight spaces
Corrosion and wear resistant
Easy crimping with standard tools
Reliable, durable connections
#TOP 3

Uninsulated Flag Terminal - 16-14 Wire Size

NSI
SF16-250-3-S
Pounds
Uninsulated Flag Terminal - 16-14 Wire Size Cover
NSI SF16-250-3-S Uninsulated Flag Terminal, Small Packs, 16-14 Wire Size, 0.250" x 0.032" Tab Size, Pounds

This UL Listed Uninsulated Flag Terminal is available in small packs and is compatible with 16-14 wire size. The 0.250-Inches x 0.032-Inches tab size ensures a secure connection. Ideal for those who need a reliable and affordable option for connecting wires.

What We Like
Secure connection
UL Listed
Compatible with 16-14 wire size
Comes in small packs
#TOP 4

The Hillman Group 50020 Flag Wire Terminal

50020
white or light gray
The Hillman Group 50020 Flag Wire Terminal Cover
The Hillman Group 50020 1/4-Inch Flag Wire Terminal, 15-Pack

The Hillman Group 50020 1/4-Inch Flag Wire Terminal is a set of 15 flag terminals made in Taiwan. The package dimensions are 2.5" in length, 1.4" in width, and 1.5" in height. It falls into the category of flag terminals.

What We Like
Made in Taiwan
Includes 15 flag terminals
Compact packaging with small dimensions
#TOP 5

NSi Nylon Insulated Flag Terminal - IFL12-250-3N-S

NSI
IFL12-250-3N-S
Pounds
NSi Nylon Insulated Flag Terminal - IFL12-250-3N-S Cover
NSi Nylon Insulated Flag Terminal, Small Packs, 12-10 Wire Size, 0.250" x 0.032" Tab Size - IFL12-250-3N-S, Ohm

The NSi Nylon Insulated Flag Terminal, also known as the NSi Flag Terminal, is a versatile electrical connector designed for various applications. Its nylon insulation provides excellent protection against electrical shock and short circuits. This terminal comes in small packs, making it convenient for users who only need a few connectors at a time. With a wire size of 12-10, it is suitable for a range of wire gauges. The 0.250-inch x 0.032-inch tab size ensures a secure connection. The NSi Flag Terminal is UL listed, guaranteeing its quality and safety. Overall, this terminal offers reliable electrical connections in a compact and efficient design.

What We Like
Excellent electrical protection
Convenient small pack size
Suitable for various wire gauges
#TOP 6

Pro'sKit 300-070 Lunar Series Die Set for Insulated Flag Terminals

300-070
Multi
One Size
Pro'sKit 300-070 Lunar Series Die Set for Insulated Flag Terminals Cover
Pro'sKit 300-070 Lunar Series Die Set for Insulated Flag Terminals, 1.5 mm² - 2.5 mm² Crimp Size, Multi

This die set for insulated flag terminals has a crimp size of 1.5 mm² - 2.5 mm². Its compact size of 1.699999998266" x 1.39999999857199" x 0.799999999184" makes it easy to store and transport. It is designed for use with flag terminals, making it a useful tool for electrical work.

What We Like
Compact size for easy storage and transport
Suitable for use with flag terminals
Designed for crimping insulated terminals
#TOP 7

NSI Specialty Connector, Female Flag, 16 AWG

NSI
SF16-187-2
Silver
0.187" x 0.020"
NSI Specialty Connector, Female Flag, 16 AWG Cover
NSI SF16-187-2 Specialty Female Flag, 16 AWG Wire Size, 0.187" x 0.020" Tab Size, Pack of 100

NSI Female Flag Connector is a specialty connector with a 0.187 x 0.020 16 AWG female flag. It is UL listed and made in the United States. This connector is useful for connecting wires to a terminal block or other electrical devices. With a female flag connector, you can easily connect and disconnect wires without having to strip or twist them. The 16 AWG wire size is suitable for both low-voltage and high-voltage applications. Being UL listed, you can trust that this connector meets the highest safety standards. With NSI Female Flag Connector, you can save time and effort in your electrical wiring projects.

What We Like
UL listed
Easy to connect/disconnect
Compatible with various wire sizes
#TOP 8

Crimp Supply 2/0 Ga. Battery Terminals

38A12018
Crimp Supply 2/0 Ga. Battery Terminals Cover
Crimp Supply 2/0 Ga. Positive Flag Battery Terminals (1 per Pack)

The Crimp Supply Battery Terminals are designed to enhance your battery connections with several key features. They are completely free of lead and comply with RoHS standards, ensuring safety and environmental friendliness. The tin plating provides excellent resistance to corrosion, which means you can expect a longer lifespan for your terminals. With superior conductivity compared to standard options, these terminals help ensure efficient power transfer. Additionally, the color-coded and die-coded design makes installation simple and straightforward, allowing you to easily identify connections. These features combine to provide reliable performance and convenience for users.

What We Like
Lead-free and safe
Corrosion-resistant coating
High conductivity
Easy installation
#TOP 9

Crimp Supply 4/0 Ga. Positive Flag Battery Terminal

38A12028
Silver
Crimp Supply 4/0 Ga. Positive Flag Battery Terminal Cover
4/0 Ga. Positive Flag Battery Terminals (1 per Pack)

The Crimp Supply Flag Terminal is designed to offer a reliable and safe connection for your battery. It is made without any lead, which means it meets strict safety standards and avoids harmful chemicals, giving you peace of mind. The terminal is coated with tin, which helps protect it from rust and corrosion, so it lasts longer even in tough conditions. It also provides excellent electrical conductivity, ensuring efficient power flow for your battery needs. Plus, its color and die coding make it easy for you to identify and install the terminal correctly, saving you time and hassle.

What We Like
Lead-free and safe
Tin plating for corrosion resistance
High conductivity
Color and die coded
#TOP 10

2/0 Ga. Negative Flag Battery Terminals

38A12015
Silver
2/0 Ga. Negative Flag Battery Terminals Cover
2/0 Ga. Negative Flag Battery Terminals (1 per Pack)

These flag battery terminals are completely lead-free and RoHS compliant, making them exempt from CA Proposition 65 requirements. They are tin plated for superior corrosion resistance and offer superior conductivity compared to standard battery terminals. The color-coded and die-coded design ensures easy identification.

What We Like
Lead-free and RoHS compliant
Tin plated for superior corrosion resistance
Superior conductivity compared to standard terminals
Color-coded and die-coded for easy identification
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What is Flag terminal?

Flag Post Terminals ensure that you have the best connection possible. They are used to connect two in-line battery cables to a battery post. Each flag post terminals is cast with 131 contact copper. Using 93% to 95% of copper eliminates potential liability and cost associated with products containing lead.

2. What are terminals and connectors?

Terminals and connectors are any of the various types of electrical wire connectors used to end a wire or cable and connect it to an electrical system or terminate it completely.

3. What are spade terminals used for?

Spade terminals are used to connect or terminate a single wire while it is connected to a stud or screw type used for an electrical connection. Since the shape of the spade is similar to a fork or spade, it's shape allows you to quickly set screws in place.

Editor's Notes

During our flag terminal research, we found 24 flag terminal products and shortlisted 10 quality products. We collected and analyzed 2,798 customer reviews through our big data system to write the flag terminals list. We found that most customers choose flag terminals with an average price of $14.67.

The flag terminals are available for purchase. We have researched hundreds of brands and picked the top brands of flag terminals, including NSI, Sherco-Auto, Hillman, Pro'sKit, Crimp Supply. The seller of top 1 product has received honest feedback from 384 consumers with an average rating of 4.7.

Written by
Brian Howie Avatar

Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.