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Clear plastic box holding 350 coloured wire connector nuts in grey, blue, orange, yellow and red

CRWEETY 350 Pcs Wire Cap Connectors Kit Assorted Colours

SKU CH-DYRN-FNK7V

A 350-piece kit of colour-coded wire connectors rated to 105 °C for solder-free electrical joints

  • Product colorBlack
  • 350 assorted wire caps cover a wide range of wiring jobs
  • Colour-coded sizes let you pick the right connector at a glance
  • Nylon shells with metal springs give secure, insulated connections every time
  • Rated to 105 °C for reliable performance in demanding environments
  • Twist-on design makes safe, solder-free joints quick and reusable

350-Piece Wire Cap Kit

This 350-piece wire cap connectors kit supplies an assortment of colour-coded nuts for joining solid and stranded conductors without solder or tape. It is aimed at electricians, automotive technicians, marine installers and DIY enthusiasts who need a broad range of common sizes in one organised package.

Replaces loose assortments

The kit consolidates five separate colour groups — grey, blue, orange, yellow and red — so you no longer have to buy individual packs for each wire gauge range. The jump is worth it when a project spans multiple conductor sizes and you want a single, temperature-rated solution up to 221°F (105°C) on hand.

Covers 22 AWG to 10 AWG

Grey caps handle a minimum of 2×#22 up to a maximum of 2×#16, blue from 2×#22 to 3×#16, orange from 1×#18/1×#20 to 4×#16/1×#20, yellow from 2×#18 to 4×#14/1×#18, and red from 2×#14 to 2×#10/1×#12. The kit runs out when connections exceed the red cap’s maximum capacity or require specialised connectors not included in the assortment.

How it compares

Measured against everything we stock in Wire Connectors & Cable Ties, at today’s prices. Recalculated every night.

Price $17.99
Pricier than about 60% of the 1,040 comparable items (median $13.99).

Specifications

Product
Product colorBlack

Questions about this item

Which wire-gauge combinations does each colour in the 350-piece kit accept?

Grey caps take a minimum of two #22 up to two #16; Blue caps take a minimum of two #22 up to three #16; Orange caps take a minimum of one #18 or one #20 up to four #16 or one #20; Yellow caps take a minimum of two #18 up to four #14 or one #18; Red caps take a minimum of two #14 up to two #10 or one #12.

What is the correct way to twist these connectors onto the wires, and what mistake should be avoided?

Strip the conductors to the length shown on the cap, hold the wires parallel, push the cap on and twist clockwise until the spring grips firmly; do not pre-twist the wires together before applying the cap, as that can prevent the internal spring from biting correctly.

When should a used connector from this kit be replaced instead of reused?

Replace any cap if the nylon shell shows cracks or discolouration from heat, if the internal metal spring feels loose or corroded, or if the cap has been exposed to temperatures above 105 °C (221 °F).

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