Hook-up Wires (SPEC 44 and SPEC 55): Engineered for MIL- SPEC and Aerospace Standards
TE hook up wires are lightweight, reliable, and abrasion-resistant. TE’s Raychem materials science and irradiation crosslinking technology is the foundation that supports a range of wire and cable products with the right balance of properties to meet help the challenges of the harshest environments. Our SPEC 44 (AS81044) and SPEC 55 (AS22759) hook up wires are established and used extensively across harsh environment applications.
What is Hook-Up Wire
Hook-up wire (also called hook-up cable or lead wire) is a single-conductor insulated wire used for low-current, low-voltage internal connections in electronic equipment. In aerospace and defense applications, TE Connectivity’s Raychem SPEC 44 and SPEC 55 families are the gold standard; designed to meet rigorous military specifications (MIL-W-22759, AS81044, AS22759), and NEMA HP3/HP4 requirements while minimizing weight and size.
Product Features
Hook Up Cable
Trusted Solutions
- Extremely low risk choice for aircraft manufacturers for over 50 years
- Tough and reliable crosslink extruded material
- Abrasion resistant and withstands mechanical damage
Performance and Reliability
- Small size, lightweight, and resistant to most chemicals and fluids
- Easy to cut, strip and mark
- Suitable for high temperature and harsh environment applications
Applications
Hook Up Cable
- Avionics & flight controlsystems
- Instrumentation & sensor connections
- Satellite & spacecraft wiring
- Military ground vehicles
- UAVs & drones
Key Differences b/w SPEC 44 vs SPEC 55
| Feature | SPEC 44 | SPEC 55 |
|---|---|---|
| Temperature Rating | -65 degrees Celsius +150 degrees Celsius |
-65degrees Celsius +200 degrees Celsius |
| Voltage Rating | 600V | 600V |
| Weight | Light | Ultra-light (up to 30% lighter) |
| Primary Insulation | Radiation crosslinked ETFE | Dual-wall (ETFE + modified XLETFE) |
| Best for | General aerospace internal wiring | High-temperature zones, weight- critical applications |
| Standards | AS81044, MIL- W-22759/41 46 |
AS22759/80-91, NEMA HP3/HP4 |
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