Types of Spade Connectors: Insulated, Heat Shrink, Male and Female
Types of spade connectors differ by insulation, male or female form and wire size, and this guide compares 4 kits from their listings to help you pick the right terminal.
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Types of spade connectors come down to a few choices: insulated or heat shrink, male or female, and which wire size the color stands for. A loose spade on a speaker wire or a trailer light is one reason to learn them, and the answer is a crimp terminal matched to the wire. This guide explains each type, then compares the kits below from their listings so you can match the connector to the job.
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Below: the types side by side, what each kit in this guide covers, and how to pick the right size for the wire.
Nilight 540PCS Mixed Quick Disconnect Insulated
A 540-piece mixed crimp terminal assortment with ring, spade, bullet, butt, fork and piggyback terminals for 22-10 AWG wire, in a plastic case.
Pros
- 540 pieces across 6 terminal types in one kit
- Copper core with tin plating and PVC insulator
- Plastic case keeps the assortment organized
- 2 Years Warranty is stated
Cons
- Spade terminals are only part of the assortment
- No heat shrink sealing is stated
- No crimping tool is stated
- No spade sizes in millimeters are stated
haisstronica 100PCS Heat Shrink Spade Connectors
A 100-piece heat shrink spade connector set for 22-10 AWG wire, with male and female terminals and 3:1 adhesive-lined tubing.
Pros
- 100 pieces: 40 red, 40 blue and 20 yellow terminals
- 3:1 adhesive-lined heat shrink tubing seals the joint
- Red copper joints are stated impact resistant
- Male and female terminals in one set
Cons
- No warranty term is stated
- No storage case is stated
- No crimping tool is stated
- Maker states compliance with all electrical standards without naming one
Twidec/Spade Crimp Connectors 2.8mm/4.8mm/6.3mm
A spade connector kit with 2.8, 4.8 and 6.3 mm male and female terminals in 15 types, with fork and ring terminals and crimping pliers.
Pros
- 15 types of male and female terminals
- Spade sizes in 2.8, 4.8 and 6.3 mm
- Crimping pliers included in the kit
- Tin plating resists oxidation and corrosion
Cons
- Piece count is not stated in the title or bullets, and the spec table disagrees with itself
- No warranty term is stated
- No heat shrink sealing is stated
- Only the spade sizes are stated in millimeters; the fork and ring sizes are not
Ftimda 90PCS Female Spade Connector Kit Insulated
A 90-piece female spade connector kit for 22-18, 16-14 and 12-10 AWG wire, with tinned copper cores in a plastic storage case.
Pros
- 90 pieces: 24 red, 50 blue and 16 yellow female terminals
- Tinned copper cores for stable connections
- Thickened brass barrel grips cables without splitting
- Organized plastic storage case for size identification
Cons
- Female terminals only; no male terminals are stated
- No warranty term is stated
- No crimping tool is stated
- Red terminals cover 22 to 18 AWG, narrower than the 22 to 16 AWG red range on the other kits
Types of spade connectors at a glance
Spade connectors are flat push-on terminals that slide onto a mating tab, which is why they come apart fast for service work. The types differ in insulation, in male or female form, and in the wire size each color covers.
| Type | What it is | Wire size by color | In these kits |
|---|---|---|---|
| Insulated female spade | Plastic sleeve over the barrel, slides onto a male tab | Red 22-18 or 22-16, Blue 16-14, Yellow 12-10 AWG | Ftimda 90-piece kit; Nilight assortment |
| Insulated male spade | Tab with an insulated barrel, mates with a female spade | Red 22-16, Blue 16-14, Yellow 12-10 AWG | haisstronica 100-piece set; Twidec kit |
| Heat shrink spade | Adhesive-lined sleeve seals the joint after heating | 22-10 AWG | haisstronica 100-piece set |
| Fork and ring terminals | Fork slides under a screw, ring closes around it | 22-10 AWG | Nilight 540-piece assortment; Twidec kit |
Color is the quick guide to wire size, but read the kit: the Ftimda red terminals cover 22 to 18 AWG, while the other kits list red as 22 to 16 AWG. For the full size chart, see spade connector sizes.
Picks for the garage
Each kit below handles a different part of the job: heat shrink sealing, a big mixed assortment, spade sizes with pliers in the box, and female terminals for quick disconnects.
How to choose the best types of spade connectors
Match the color to the wire
Start with the wire size, then read the color. Red covers 22 to 16 AWG, blue covers 16 to 14 AWG, and yellow covers 12 to 10 AWG on the haisstronica, Nilight and Twidec listings. The Ftimda listing differs: its red terminals cover 22 to 18 AWG, its blue terminals cover 16 to 14 AWG, and its yellow terminals cover 12 to 10 AWG. The Twidec listing adds M4-#8 to the color codes. A terminal crimped onto the wrong size wire can pull loose, so match the color and the code before you crimp.
Male, female, or a mix?
Male spades are tabs, female spades slide onto them, and a job needs the form that mates with the part already fitted. The haisstronica set holds male and female terminals, and the Twidec kit holds male and female terminals in 15 types. The Nilight assortment holds spades among ring, bullet male and female, butt, fork and piggyback terminals. The Ftimda kit holds female terminals only, so it suits jobs where the male tabs are already in place.
Insulated or heat shrink?
The Nilight, haisstronica and Twidec terminals carry a PVC sleeve over the barrel, and the Twidec sleeve is stated flame retardant. The Ftimda terminals are wrapped in heat-resistant insulation. Heat shrink terminals add a sleeve that seals after heating: the haisstronica set uses 3:1 adhesive-lined tubing, and the maker states hot melt glue wraps the wires after heating. Tin plating shows up on the Nilight, Twidec and Ftimda listings, and the Twidec listing states it resists oxidation and corrosion. Pick heat shrink where moisture reaches the joint, and insulated PVC for general garage, auto and home wiring.
Kit size and storage
The kits with a stated count run from 90 pieces to 540 pieces. The Nilight assortment holds 540 pieces in a plastic case that measures 10.0 by 6.0 by 1.0 inches. The Ftimda kit holds 90 pieces in an organized plastic storage case. The Twidec kit comes with a classified plastic box and crimping pliers. The haisstronica set holds 100 pieces with no storage case stated. If the kit has no crimper, see the best wire crimper electric picks. For wiring work beyond replacing a connector, use a licensed electrician.
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FAQ: garage tools
What wire size does a red spade connector fit?
Red covers 22 to 16 AWG on the haisstronica, Nilight and Twidec listings. The Ftimda listing states red as 22 to 18 AWG, so read the color code on the kit you buy.
What is the difference between male and female spade connectors?
A male spade is a flat tab, and a female spade slides onto it. The haisstronica set and the Twidec kit hold male and female terminals, while the Ftimda kit holds female terminals only.
Which kit includes a crimping tool?
The Twidec kit is equipped with crimping pliers. The haisstronica, Nilight and Ftimda listings state no crimping tool.
How many pieces are in these kits?
The haisstronica set holds 100 pieces, the Nilight assortment holds 540 pieces, and the Ftimda kit holds 90 pieces. The Twidec listing states no piece count in its title or bullets, and its spec table lists the size as 125PCS while the part number reads 150PCS.
Do any of these kits state a warranty?
The Nilight listing states a 2 Years Warranty. The haisstronica, Twidec and Ftimda listings state no warranty term.
Related: best spade connector kit, dielectric grease uses, our diagnostics and electrical hub and the best heat shrink tubing for 14-16 gauge wire.
