Why Choose the Partex URS43 Uninsulated Spade Terminal M4?
The Partex URS43 is a high-quality uninsulated spade terminal (fork terminal) designed for secure and reliable electrical connections using M4 screw or stud terminals. Manufactured for terminating stranded copper conductors, this compact crimp terminal provides a practical solution for electrical installations, industrial control panels and wiring assemblies.
As part of the Partex uninsulated crimp terminal range, the URS43 features an open-ended fork design that allows convenient installation and removal from screw terminals without completely removing the fixing screw. Its conductive metal construction and crimp barrel help create a durable electrical connection when installed using the correct crimping tool.
Designed for conductor cross-sections of 0.5–1.5 mm² (22–16 AWG), the URS43 accommodates M4 (4 mm) studs with a 4.3 mm fork opening. Supplied in a convenient pack of 100 terminals, it is suitable for electricians, panel builders, maintenance engineers and industrial wiring professionals.
Key Advantages
- Uninsulated fork terminal design provides a practical solution for screw and stud electrical connections.
- M4 stud compatibility enables installation on suitable 4 mm terminal fixings.
- 0.5–1.5 mm² conductor capacity supports commonly used small-section stranded copper wiring.
- Open-ended spade configuration allows convenient connection and disconnection without fully removing the terminal screw.
- Conductive metal construction supports reliable electrical continuity.
- Crimp termination provides a secure mechanical connection when installed with an appropriate tool.
- Compact 16 mm overall length makes the terminal suitable for space-conscious wiring arrangements.
- Pack of 100 supports efficient installation, maintenance and production wiring operations.
Key Features
- Partex URS43 uninsulated spade terminal.
- Fork-type electrical crimp connector for stranded conductors.
- M4 stud size with a 4.3 mm fork opening.
- 0.5–1.5 mm² conductor range (22–16 AWG).
- 7.2 mm palm width.
- 16 mm overall terminal length.
- 3.45 mm barrel diameter.
- 4.3 mm barrel length.
- 0.75 mm palm thickness.
- Uninsulated construction for applications where separate insulation or protection is provided as required.
- Suitable for electrical control panels, terminal connections and equipment wiring.
- Supplied in a pack of 100 pieces.
Technical Specifications
- Manufacturer: Partex
- Series: URS Uninsulated Spade Terminals
- Model: URS43
- Product type: Uninsulated spade / fork crimp terminal
- Terminal configuration: Open-ended fork
- Stud size: M4 / 4 mm
- Fork opening (d2): 4.3 mm
- Conductor cross-section: 0.5–1.5 mm²
- Conductor size (AWG): 22–16 AWG
- Terminal material: Copper
- Insulation: Uninsulated
- Palm width (B): 7.2 mm
- Overall length (L): 16 mm
- Barrel diameter (D): 3.45 mm
- Barrel length (E): 4.3 mm
- Palm thickness (t): 0.75 mm
- Termination method: Crimp connection
- Compatible conductor type: Stranded copper wire
- Pack quantity: 100 pieces
Reliable Crimp Connections for Electrical Wiring
The Partex URS43 spade terminal provides an efficient method of connecting stranded copper conductors to screw-type electrical terminals. Its fork-shaped contact end fits around a compatible M4 stud, allowing the terminal to be secured beneath a screw head or washer. This arrangement is particularly useful in electrical panels and equipment where connections may require periodic inspection, maintenance or replacement.
The uninsulated crimp barrel is designed to be compressed around a correctly prepared conductor using a suitable crimping tool. Proper conductor preparation, crimping and screw tightening are essential for achieving a dependable electrical and mechanical connection. Where electrical insulation or protection against accidental contact is required, suitable additional insulation or an appropriate enclosure should be used.
Typical Applications
- Industrial electrical control panels and switchgear assemblies.
- Terminal block and screw terminal connections.
- Electrical equipment wiring and maintenance.
- Machinery control and automation systems.
- Power distribution and auxiliary wiring circuits.
- Electrical cabinet assembly and panel building.
- OEM equipment manufacturing and wiring harness production.
- Repair and replacement of existing fork terminal connections.
