HAS-40LH (Line Haul)
- **Description**: The HAS-40LH is noted as a lightweight version of the HAS-400 suspension, designed specifically for line haul applications.
Spring Models:
- **50-403**:
- **End Holes**: 3 end holes.
- **End Hole Spacing**: Initially 6 1/2 inches, then 3 3/8 inches.
- **Note**: This spring has a specific spacing pattern to accommodate its design.
- **50-455**:
- **End Holes**: 2 end holes.
- **End Hole Spacing**: 6 1/2 inches.
- **Difference**: Compared to 50-403, the 50-455 has shorter "B" end, otherwise similar in design.