Twidec 290-Pc Automotive Terminal Pin Kit — 21 Pin Types, Tinned Copper for 12V Wiring

A 290-piece Twidec terminal pin and connector kit that supplies 21 different pin types for reliable automotive and 12V electrical connections.

Keep a complete assortment of male and female electrical terminals on hand with this Twidec kit. The set bundles 290 tinned copper pins in multiple diameters so you can match factory wiring, repair harnesses, or build custom connectors for cars, motorcycles, boats, and other 12V systems.

What sizes and pin types are included in the kit?

The kit contains 21 distinct pin styles across a range of diameters to accommodate common automotive and 12V wiring needs. Both male and female terminals are provided for forming secure plug-and-socket connections.

• Pin diameters: 1.0, 1.5, 1.8, 2.2, 2.8, 3.5 mm
• Mixed male and female terminals for multiple connector shells
• 290 total pieces enabling multiple repairs or builds

How durable and conductive are the terminals?

Twidec terminals are stamped from high-conductivity copper and finished with tin plating to resist corrosion and maintain low electrical resistance. The tinned surface lengthens usable life in environments exposed to moisture or vibration.

• Tinned copper construction for strong conductivity
• Corrosion-resistant plating for long-term reliability
• Designed to withstand typical automotive vibration and temperature ranges

How do the connector buckles and locking features perform?

Each terminal is formed with a buckle-style retention feature that snaps firmly into compatible connector shells, preventing accidental withdrawal while allowing intentional disconnection. That design balances secure locking with easy serviceability.

• Buckles ensure proper insertion and prevent slipping out
• Easy-to-release contact points for maintenance or rework
• Compatible with many standard 12V connector housings

Which applications are these pins best suited for?

These terminals are versatile for any 12V electrical system requiring reliable crimped or inserted contacts. Typical uses include vehicles, motorcycles, marine craft, off-road equipment, scooters, and general-purpose electrical projects.

• Automotive wiring harness repair and custom connectors
• Motorcycles, scooters, boats, and jet skis
• Trucks, recreational vehicles, and DIY electronics

Who is this for: Technicians, hobbyists, and vehicle owners who perform wiring repairs, build custom connector assemblies, or maintain multiple types of 12V equipment will find this Twidec 290-piece kit useful. The broad size range and mix of male/female terminals make it a practical, cost-effective resource for workshops, roadside repair kits, and project benches.